# Webhooks

## 

`client.webhooks.events(RequestOptionsoptions?): void`

**** ``

### Example

```typescript
import LinqAPIV3 from '@linqapp/sdk';

const client = new LinqAPIV3({
  apiKey: process.env['LINQ_API_V3_API_KEY'], // This is the default and can be omitted
});

await client.webhooks.events();
```

## Domain Types

### Message Event V2

- `MessageEventV2`

  Unified payload for message webhooks when using `webhook_version: "2026-02-03"`.

  This schema is used for message.sent, message.received, message.delivered, and message.read
  events when the subscription URL includes `?version=2026-02-03`.

  Key differences from V1 (2025-01-01):

  - `direction`: "inbound" or "outbound" instead of `is_from_me` boolean
  - `sender_handle`: Full handle object for the sender
  - `chat`: Nested object with `id`, `is_group`, and `owner_handle`
  - Message fields (`id`, `parts`, `effect`, etc.) are at the top level, not nested in `message`

  Timestamps indicate the message state:

  - `message.sent`: sent_at set, delivered_at=null, read_at=null
  - `message.received`: sent_at set, delivered_at=null, read_at=null
  - `message.delivered`: sent_at set, delivered_at set, read_at=null
  - `message.read`: sent_at set, delivered_at set, read_at set

  - `id: string`

    Message identifier

  - `chat: Chat`

    Chat information

    - `id: string`

      Chat identifier

    - `health_status: HealthStatus`

      **[BETA]** Current health for a chat. Always present — chats start at `HEALTHY` and may shift based on engagement and delivery signals on the conversation. Many `AT_RISK` or `CRITICAL` chats on a single line increase the risk of line flagging.

      Switch on `status` to gate sends or surface line health in your UI — the enum is the long-term contract. Each status carries a `doc_url` that deep-links to the relevant section of the Chat Health guide.

      See the [Chat Health guide](/guides/chats/chat-health) for what each status means and how to react.

      - `doc_url: string`

        Deep-link to the relevant section of the Chat Health guide for this status.

      - `status: "HEALTHY" | "AT_RISK" | "CRITICAL" | "OPTED_OUT"`

        Current health bucket for the chat. See the [Chat Health guide](/guides/chats/chat-health) for what each value means and how to react. `doc_url` deep-links to the relevant section.

        - `"HEALTHY"`

        - `"AT_RISK"`

        - `"CRITICAL"`

        - `"OPTED_OUT"`

      - `updated_at: string`

        When this status last changed.

    - `is_group?: boolean | null`

      Whether this is a group chat

    - `owner_handle?: ChatHandle | null`

      Your phone number's handle. Always has is_me=true.

      - `id: string`

        Unique identifier for this handle

      - `handle: string`

        Phone number (E.164) or email address of the participant

      - `joined_at: string`

        When this participant joined the chat

      - `service: ServiceType`

        Messaging service type

        - `"iMessage"`

        - `"SMS"`

        - `"RCS"`

      - `is_me?: boolean | null`

        Whether this handle belongs to the sender (your phone number)

      - `left_at?: string | null`

        When they left (if applicable)

      - `status?: "active" | "left" | "removed" | null`

        Participant status

        - `"active"`

        - `"left"`

        - `"removed"`

  - `direction: "inbound" | "outbound"`

    Message direction - "outbound" if sent by you, "inbound" if received

    - `"inbound"`

    - `"outbound"`

  - `parts: Array<SchemasTextPartResponse | SchemasMediaPartResponse | SchemasLinkPartResponse>`

    Message parts (text and/or media)

    - `SchemasTextPartResponse`

      A text message part

      - `type: "text"`

        Indicates this is a text message part

        - `"text"`

      - `value: string`

        The text content

      - `text_decorations?: Array<TextDecoration> | null`

        Text decorations applied to character ranges in the value

        - `range: Array<number>`

          Character range `[start, end)` in the `value` string where the decoration applies.
          `start` is inclusive, `end` is exclusive.
          *Characters are measured as UTF-16 code units. Most characters count as 1; some emoji count as 2.*

        - `animation?: "big" | "small" | "shake" | 5 more`

          Animated text effect to apply. Mutually exclusive with `style`.

          - `"big"`

          - `"small"`

          - `"shake"`

          - `"nod"`

          - `"explode"`

          - `"ripple"`

          - `"bloom"`

          - `"jitter"`

        - `style?: "bold" | "italic" | "strikethrough" | "underline"`

          Text style to apply. Mutually exclusive with `animation`.

          - `"bold"`

          - `"italic"`

          - `"strikethrough"`

          - `"underline"`

    - `SchemasMediaPartResponse`

      A media attachment part

      - `id: string`

        Unique attachment identifier

      - `filename: string`

        Original filename

      - `mime_type: string`

        MIME type of the file

      - `size_bytes: number`

        File size in bytes

      - `type: "media"`

        Indicates this is a media attachment part

        - `"media"`

      - `url: string`

        Presigned URL for downloading the attachment (expires in 1 hour).

    - `SchemasLinkPartResponse`

      A rich link preview part

      - `type: "link"`

        Indicates this is a rich link preview part

        - `"link"`

      - `value: string`

        The URL

  - `sender_handle: ChatHandle`

    The handle that sent this message

  - `service: ServiceType`

    Messaging service type

  - `delivered_at?: string | null`

    When the message was delivered. Null if not yet delivered.

  - `effect?: SchemasMessageEffect | null`

    iMessage effect applied to a message (screen or bubble animation)

    - `name?: string`

      Effect name (confetti, fireworks, slam, gentle, etc.)

    - `type?: "screen" | "bubble"`

      Effect category

      - `"screen"`

      - `"bubble"`

  - `idempotency_key?: string | null`

    Idempotency key for deduplication of outbound messages.

  - `preferred_service?: "iMessage" | "SMS" | "RCS" | "auto" | null`

    Preferred messaging service type. Includes "auto" for default fallback behavior.

    - `"iMessage"`

    - `"SMS"`

    - `"RCS"`

    - `"auto"`

  - `read_at?: string | null`

    When the message was read. Null if not yet read.

  - `reply_to?: ReplyTo | null`

    Reference to the message this is replying to (for threaded replies)

    - `message_id?: string`

      ID of the message being replied to

    - `part_index?: number`

      Index of the part being replied to

  - `sent_at?: string | null`

    When the message was sent. Null if not yet sent.

### Message Payload

- `MessagePayload`

  Message content nested within webhook events

  - `id?: string`

    Message identifier

  - `created_at?: string`

    When the message record was created

  - `delivered_at?: string | null`

    When the message was delivered

  - `effect?: SchemasMessageEffect`

    iMessage effect applied to a message (screen or bubble animation)

    - `name?: string`

      Effect name (confetti, fireworks, slam, gentle, etc.)

    - `type?: "screen" | "bubble"`

      Effect category

      - `"screen"`

      - `"bubble"`

  - `is_delivered?: boolean`

    Whether the message has been delivered

  - `is_read?: boolean`

    Whether the message has been read

  - `parts?: Array<SchemasTextPartResponse | SchemasMediaPartResponse | SchemasLinkPartResponse>`

    Message content parts (text and/or media)

    - `SchemasTextPartResponse`

      A text message part

      - `type: "text"`

        Indicates this is a text message part

        - `"text"`

      - `value: string`

        The text content

      - `text_decorations?: Array<TextDecoration> | null`

        Text decorations applied to character ranges in the value

        - `range: Array<number>`

          Character range `[start, end)` in the `value` string where the decoration applies.
          `start` is inclusive, `end` is exclusive.
          *Characters are measured as UTF-16 code units. Most characters count as 1; some emoji count as 2.*

        - `animation?: "big" | "small" | "shake" | 5 more`

          Animated text effect to apply. Mutually exclusive with `style`.

          - `"big"`

          - `"small"`

          - `"shake"`

          - `"nod"`

          - `"explode"`

          - `"ripple"`

          - `"bloom"`

          - `"jitter"`

        - `style?: "bold" | "italic" | "strikethrough" | "underline"`

          Text style to apply. Mutually exclusive with `animation`.

          - `"bold"`

          - `"italic"`

          - `"strikethrough"`

          - `"underline"`

    - `SchemasMediaPartResponse`

      A media attachment part

      - `id: string`

        Unique attachment identifier

      - `filename: string`

        Original filename

      - `mime_type: string`

        MIME type of the file

      - `size_bytes: number`

        File size in bytes

      - `type: "media"`

        Indicates this is a media attachment part

        - `"media"`

      - `url: string`

        Presigned URL for downloading the attachment (expires in 1 hour).

    - `SchemasLinkPartResponse`

      A rich link preview part

      - `type: "link"`

        Indicates this is a rich link preview part

        - `"link"`

      - `value: string`

        The URL

  - `read_at?: string | null`

    When the message was read

  - `reply_to?: ReplyTo`

    Reference to the message this is replying to

    - `message_id?: string`

      The ID of the message being replied to

    - `part_index?: number`

      Index of the message part being replied to (0-based)

  - `sent_at?: string | null`

    When the message was sent

  - `updated_at?: string`

    When the message record was last updated

### Reaction Event Base

- `ReactionEventBase`

  - `is_from_me: boolean`

    Whether this reaction was from the owner of the phone number (true) or from someone else (false)

  - `reaction_type: ReactionType`

    Type of reaction. Standard iMessage tapbacks are love, like, dislike, laugh, emphasize, question.
    Custom emoji reactions have type "custom" with the actual emoji in the custom_emoji field.
    Sticker reactions have type "sticker" with sticker attachment details in the sticker field.

    - `"love"`

    - `"like"`

    - `"dislike"`

    - `"laugh"`

    - `"emphasize"`

    - `"question"`

    - `"custom"`

    - `"sticker"`

  - `chat_id?: string`

    Chat identifier (UUID)

  - `custom_emoji?: string | null`

    The actual emoji when reaction_type is "custom". Null for standard tapbacks.

  - `from?: string`

    DEPRECATED: Use from_handle instead. Phone number or email address of the person who added/removed the reaction.

  - `from_handle?: ChatHandle`

    The person who added/removed the reaction as a full handle object

    - `id: string`

      Unique identifier for this handle

    - `handle: string`

      Phone number (E.164) or email address of the participant

    - `joined_at: string`

      When this participant joined the chat

    - `service: ServiceType`

      Messaging service type

      - `"iMessage"`

      - `"SMS"`

      - `"RCS"`

    - `is_me?: boolean | null`

      Whether this handle belongs to the sender (your phone number)

    - `left_at?: string | null`

      When they left (if applicable)

    - `status?: "active" | "left" | "removed" | null`

      Participant status

      - `"active"`

      - `"left"`

      - `"removed"`

  - `message_id?: string`

    Message identifier (UUID) that the reaction was added to or removed from

  - `part_index?: number`

    Index of the message part that was reacted to (0-based)

  - `reacted_at?: string`

    When the reaction was added or removed

  - `service?: ServiceType`

    Messaging service type

  - `sticker?: Sticker | null`

    Sticker attachment details when reaction_type is "sticker". Null for non-sticker reactions.

    - `file_name?: string`

      Filename of the sticker

    - `height?: number`

      Sticker image height in pixels

    - `mime_type?: string`

      MIME type of the sticker image

    - `url?: string`

      Presigned URL for downloading the sticker image (expires in 1 hour).

    - `width?: number`

      Sticker image width in pixels

### Schemas Media Part Response

- `SchemasMediaPartResponse`

  A media attachment part

  - `id: string`

    Unique attachment identifier

  - `filename: string`

    Original filename

  - `mime_type: string`

    MIME type of the file

  - `size_bytes: number`

    File size in bytes

  - `type: "media"`

    Indicates this is a media attachment part

    - `"media"`

  - `url: string`

    Presigned URL for downloading the attachment (expires in 1 hour).

### Schemas Message Effect

- `SchemasMessageEffect`

  iMessage effect applied to a message (screen or bubble animation)

  - `name?: string`

    Effect name (confetti, fireworks, slam, gentle, etc.)

  - `type?: "screen" | "bubble"`

    Effect category

    - `"screen"`

    - `"bubble"`

### Schemas Text Part Response

- `SchemasTextPartResponse`

  A text message part

  - `type: "text"`

    Indicates this is a text message part

    - `"text"`

  - `value: string`

    The text content

  - `text_decorations?: Array<TextDecoration> | null`

    Text decorations applied to character ranges in the value

    - `range: Array<number>`

      Character range `[start, end)` in the `value` string where the decoration applies.
      `start` is inclusive, `end` is exclusive.
      *Characters are measured as UTF-16 code units. Most characters count as 1; some emoji count as 2.*

    - `animation?: "big" | "small" | "shake" | 5 more`

      Animated text effect to apply. Mutually exclusive with `style`.

      - `"big"`

      - `"small"`

      - `"shake"`

      - `"nod"`

      - `"explode"`

      - `"ripple"`

      - `"bloom"`

      - `"jitter"`

    - `style?: "bold" | "italic" | "strikethrough" | "underline"`

      Text style to apply. Mutually exclusive with `animation`.

      - `"bold"`

      - `"italic"`

      - `"strikethrough"`

      - `"underline"`

### Message Sent Webhook Event

- `MessageSentWebhookEvent`

  Complete webhook payload for message.sent events (2026-02-03 format)

  - `api_version: string`

    API version for the webhook payload format

  - `created_at: string`

    When the event was created

  - `data: MessageEventV2`

    Unified payload for message webhooks when using `webhook_version: "2026-02-03"`.

    This schema is used for message.sent, message.received, message.delivered, and message.read
    events when the subscription URL includes `?version=2026-02-03`.

    Key differences from V1 (2025-01-01):

    - `direction`: "inbound" or "outbound" instead of `is_from_me` boolean
    - `sender_handle`: Full handle object for the sender
    - `chat`: Nested object with `id`, `is_group`, and `owner_handle`
    - Message fields (`id`, `parts`, `effect`, etc.) are at the top level, not nested in `message`

    Timestamps indicate the message state:

    - `message.sent`: sent_at set, delivered_at=null, read_at=null
    - `message.received`: sent_at set, delivered_at=null, read_at=null
    - `message.delivered`: sent_at set, delivered_at set, read_at=null
    - `message.read`: sent_at set, delivered_at set, read_at set

    - `id: string`

      Message identifier

    - `chat: Chat`

      Chat information

      - `id: string`

        Chat identifier

      - `health_status: HealthStatus`

        **[BETA]** Current health for a chat. Always present — chats start at `HEALTHY` and may shift based on engagement and delivery signals on the conversation. Many `AT_RISK` or `CRITICAL` chats on a single line increase the risk of line flagging.

        Switch on `status` to gate sends or surface line health in your UI — the enum is the long-term contract. Each status carries a `doc_url` that deep-links to the relevant section of the Chat Health guide.

        See the [Chat Health guide](/guides/chats/chat-health) for what each status means and how to react.

        - `doc_url: string`

          Deep-link to the relevant section of the Chat Health guide for this status.

        - `status: "HEALTHY" | "AT_RISK" | "CRITICAL" | "OPTED_OUT"`

          Current health bucket for the chat. See the [Chat Health guide](/guides/chats/chat-health) for what each value means and how to react. `doc_url` deep-links to the relevant section.

          - `"HEALTHY"`

          - `"AT_RISK"`

          - `"CRITICAL"`

          - `"OPTED_OUT"`

        - `updated_at: string`

          When this status last changed.

      - `is_group?: boolean | null`

        Whether this is a group chat

      - `owner_handle?: ChatHandle | null`

        Your phone number's handle. Always has is_me=true.

        - `id: string`

          Unique identifier for this handle

        - `handle: string`

          Phone number (E.164) or email address of the participant

        - `joined_at: string`

          When this participant joined the chat

        - `service: ServiceType`

          Messaging service type

          - `"iMessage"`

          - `"SMS"`

          - `"RCS"`

        - `is_me?: boolean | null`

          Whether this handle belongs to the sender (your phone number)

        - `left_at?: string | null`

          When they left (if applicable)

        - `status?: "active" | "left" | "removed" | null`

          Participant status

          - `"active"`

          - `"left"`

          - `"removed"`

    - `direction: "inbound" | "outbound"`

      Message direction - "outbound" if sent by you, "inbound" if received

      - `"inbound"`

      - `"outbound"`

    - `parts: Array<SchemasTextPartResponse | SchemasMediaPartResponse | SchemasLinkPartResponse>`

      Message parts (text and/or media)

      - `SchemasTextPartResponse`

        A text message part

        - `type: "text"`

          Indicates this is a text message part

          - `"text"`

        - `value: string`

          The text content

        - `text_decorations?: Array<TextDecoration> | null`

          Text decorations applied to character ranges in the value

          - `range: Array<number>`

            Character range `[start, end)` in the `value` string where the decoration applies.
            `start` is inclusive, `end` is exclusive.
            *Characters are measured as UTF-16 code units. Most characters count as 1; some emoji count as 2.*

          - `animation?: "big" | "small" | "shake" | 5 more`

            Animated text effect to apply. Mutually exclusive with `style`.

            - `"big"`

            - `"small"`

            - `"shake"`

            - `"nod"`

            - `"explode"`

            - `"ripple"`

            - `"bloom"`

            - `"jitter"`

          - `style?: "bold" | "italic" | "strikethrough" | "underline"`

            Text style to apply. Mutually exclusive with `animation`.

            - `"bold"`

            - `"italic"`

            - `"strikethrough"`

            - `"underline"`

      - `SchemasMediaPartResponse`

        A media attachment part

        - `id: string`

          Unique attachment identifier

        - `filename: string`

          Original filename

        - `mime_type: string`

          MIME type of the file

        - `size_bytes: number`

          File size in bytes

        - `type: "media"`

          Indicates this is a media attachment part

          - `"media"`

        - `url: string`

          Presigned URL for downloading the attachment (expires in 1 hour).

      - `SchemasLinkPartResponse`

        A rich link preview part

        - `type: "link"`

          Indicates this is a rich link preview part

          - `"link"`

        - `value: string`

          The URL

    - `sender_handle: ChatHandle`

      The handle that sent this message

    - `service: ServiceType`

      Messaging service type

    - `delivered_at?: string | null`

      When the message was delivered. Null if not yet delivered.

    - `effect?: SchemasMessageEffect | null`

      iMessage effect applied to a message (screen or bubble animation)

      - `name?: string`

        Effect name (confetti, fireworks, slam, gentle, etc.)

      - `type?: "screen" | "bubble"`

        Effect category

        - `"screen"`

        - `"bubble"`

    - `idempotency_key?: string | null`

      Idempotency key for deduplication of outbound messages.

    - `preferred_service?: "iMessage" | "SMS" | "RCS" | "auto" | null`

      Preferred messaging service type. Includes "auto" for default fallback behavior.

      - `"iMessage"`

      - `"SMS"`

      - `"RCS"`

      - `"auto"`

    - `read_at?: string | null`

      When the message was read. Null if not yet read.

    - `reply_to?: ReplyTo | null`

      Reference to the message this is replying to (for threaded replies)

      - `message_id?: string`

        ID of the message being replied to

      - `part_index?: number`

        Index of the part being replied to

    - `sent_at?: string | null`

      When the message was sent. Null if not yet sent.

  - `event_id: string`

    Unique identifier for this event (for deduplication)

  - `event_type: WebhookEventType`

    Valid webhook event types that can be subscribed to.

    **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
    Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `"message.sent"`

    - `"message.received"`

    - `"message.read"`

    - `"message.delivered"`

    - `"message.failed"`

    - `"message.edited"`

    - `"reaction.added"`

    - `"reaction.removed"`

    - `"participant.added"`

    - `"participant.removed"`

    - `"chat.created"`

    - `"chat.group_name_updated"`

    - `"chat.group_icon_updated"`

    - `"chat.group_name_update_failed"`

    - `"chat.group_icon_update_failed"`

    - `"chat.typing_indicator.started"`

    - `"chat.typing_indicator.stopped"`

    - `"phone_number.status_updated"`

    - `"call.initiated"`

    - `"call.ringing"`

    - `"call.answered"`

    - `"call.ended"`

    - `"call.failed"`

    - `"call.declined"`

    - `"call.no_answer"`

  - `partner_id: string`

    Partner identifier. Present on all webhooks for cross-referencing.

  - `trace_id: string`

    Trace ID for debugging and correlation across systems.

  - `webhook_version: string`

    Date-based webhook payload version.
    Determined by the `?version=` query parameter in your webhook subscription URL.
    If no version parameter is specified, defaults based on subscription creation date.

### Message Received Webhook Event

- `MessageReceivedWebhookEvent`

  Complete webhook payload for message.received events (2026-02-03 format)

  - `api_version: string`

    API version for the webhook payload format

  - `created_at: string`

    When the event was created

  - `data: MessageEventV2`

    Unified payload for message webhooks when using `webhook_version: "2026-02-03"`.

    This schema is used for message.sent, message.received, message.delivered, and message.read
    events when the subscription URL includes `?version=2026-02-03`.

    Key differences from V1 (2025-01-01):

    - `direction`: "inbound" or "outbound" instead of `is_from_me` boolean
    - `sender_handle`: Full handle object for the sender
    - `chat`: Nested object with `id`, `is_group`, and `owner_handle`
    - Message fields (`id`, `parts`, `effect`, etc.) are at the top level, not nested in `message`

    Timestamps indicate the message state:

    - `message.sent`: sent_at set, delivered_at=null, read_at=null
    - `message.received`: sent_at set, delivered_at=null, read_at=null
    - `message.delivered`: sent_at set, delivered_at set, read_at=null
    - `message.read`: sent_at set, delivered_at set, read_at set

    - `id: string`

      Message identifier

    - `chat: Chat`

      Chat information

      - `id: string`

        Chat identifier

      - `health_status: HealthStatus`

        **[BETA]** Current health for a chat. Always present — chats start at `HEALTHY` and may shift based on engagement and delivery signals on the conversation. Many `AT_RISK` or `CRITICAL` chats on a single line increase the risk of line flagging.

        Switch on `status` to gate sends or surface line health in your UI — the enum is the long-term contract. Each status carries a `doc_url` that deep-links to the relevant section of the Chat Health guide.

        See the [Chat Health guide](/guides/chats/chat-health) for what each status means and how to react.

        - `doc_url: string`

          Deep-link to the relevant section of the Chat Health guide for this status.

        - `status: "HEALTHY" | "AT_RISK" | "CRITICAL" | "OPTED_OUT"`

          Current health bucket for the chat. See the [Chat Health guide](/guides/chats/chat-health) for what each value means and how to react. `doc_url` deep-links to the relevant section.

          - `"HEALTHY"`

          - `"AT_RISK"`

          - `"CRITICAL"`

          - `"OPTED_OUT"`

        - `updated_at: string`

          When this status last changed.

      - `is_group?: boolean | null`

        Whether this is a group chat

      - `owner_handle?: ChatHandle | null`

        Your phone number's handle. Always has is_me=true.

        - `id: string`

          Unique identifier for this handle

        - `handle: string`

          Phone number (E.164) or email address of the participant

        - `joined_at: string`

          When this participant joined the chat

        - `service: ServiceType`

          Messaging service type

          - `"iMessage"`

          - `"SMS"`

          - `"RCS"`

        - `is_me?: boolean | null`

          Whether this handle belongs to the sender (your phone number)

        - `left_at?: string | null`

          When they left (if applicable)

        - `status?: "active" | "left" | "removed" | null`

          Participant status

          - `"active"`

          - `"left"`

          - `"removed"`

    - `direction: "inbound" | "outbound"`

      Message direction - "outbound" if sent by you, "inbound" if received

      - `"inbound"`

      - `"outbound"`

    - `parts: Array<SchemasTextPartResponse | SchemasMediaPartResponse | SchemasLinkPartResponse>`

      Message parts (text and/or media)

      - `SchemasTextPartResponse`

        A text message part

        - `type: "text"`

          Indicates this is a text message part

          - `"text"`

        - `value: string`

          The text content

        - `text_decorations?: Array<TextDecoration> | null`

          Text decorations applied to character ranges in the value

          - `range: Array<number>`

            Character range `[start, end)` in the `value` string where the decoration applies.
            `start` is inclusive, `end` is exclusive.
            *Characters are measured as UTF-16 code units. Most characters count as 1; some emoji count as 2.*

          - `animation?: "big" | "small" | "shake" | 5 more`

            Animated text effect to apply. Mutually exclusive with `style`.

            - `"big"`

            - `"small"`

            - `"shake"`

            - `"nod"`

            - `"explode"`

            - `"ripple"`

            - `"bloom"`

            - `"jitter"`

          - `style?: "bold" | "italic" | "strikethrough" | "underline"`

            Text style to apply. Mutually exclusive with `animation`.

            - `"bold"`

            - `"italic"`

            - `"strikethrough"`

            - `"underline"`

      - `SchemasMediaPartResponse`

        A media attachment part

        - `id: string`

          Unique attachment identifier

        - `filename: string`

          Original filename

        - `mime_type: string`

          MIME type of the file

        - `size_bytes: number`

          File size in bytes

        - `type: "media"`

          Indicates this is a media attachment part

          - `"media"`

        - `url: string`

          Presigned URL for downloading the attachment (expires in 1 hour).

      - `SchemasLinkPartResponse`

        A rich link preview part

        - `type: "link"`

          Indicates this is a rich link preview part

          - `"link"`

        - `value: string`

          The URL

    - `sender_handle: ChatHandle`

      The handle that sent this message

    - `service: ServiceType`

      Messaging service type

    - `delivered_at?: string | null`

      When the message was delivered. Null if not yet delivered.

    - `effect?: SchemasMessageEffect | null`

      iMessage effect applied to a message (screen or bubble animation)

      - `name?: string`

        Effect name (confetti, fireworks, slam, gentle, etc.)

      - `type?: "screen" | "bubble"`

        Effect category

        - `"screen"`

        - `"bubble"`

    - `idempotency_key?: string | null`

      Idempotency key for deduplication of outbound messages.

    - `preferred_service?: "iMessage" | "SMS" | "RCS" | "auto" | null`

      Preferred messaging service type. Includes "auto" for default fallback behavior.

      - `"iMessage"`

      - `"SMS"`

      - `"RCS"`

      - `"auto"`

    - `read_at?: string | null`

      When the message was read. Null if not yet read.

    - `reply_to?: ReplyTo | null`

      Reference to the message this is replying to (for threaded replies)

      - `message_id?: string`

        ID of the message being replied to

      - `part_index?: number`

        Index of the part being replied to

    - `sent_at?: string | null`

      When the message was sent. Null if not yet sent.

  - `event_id: string`

    Unique identifier for this event (for deduplication)

  - `event_type: WebhookEventType`

    Valid webhook event types that can be subscribed to.

    **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
    Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `"message.sent"`

    - `"message.received"`

    - `"message.read"`

    - `"message.delivered"`

    - `"message.failed"`

    - `"message.edited"`

    - `"reaction.added"`

    - `"reaction.removed"`

    - `"participant.added"`

    - `"participant.removed"`

    - `"chat.created"`

    - `"chat.group_name_updated"`

    - `"chat.group_icon_updated"`

    - `"chat.group_name_update_failed"`

    - `"chat.group_icon_update_failed"`

    - `"chat.typing_indicator.started"`

    - `"chat.typing_indicator.stopped"`

    - `"phone_number.status_updated"`

    - `"call.initiated"`

    - `"call.ringing"`

    - `"call.answered"`

    - `"call.ended"`

    - `"call.failed"`

    - `"call.declined"`

    - `"call.no_answer"`

  - `partner_id: string`

    Partner identifier. Present on all webhooks for cross-referencing.

  - `trace_id: string`

    Trace ID for debugging and correlation across systems.

  - `webhook_version: string`

    Date-based webhook payload version.
    Determined by the `?version=` query parameter in your webhook subscription URL.
    If no version parameter is specified, defaults based on subscription creation date.

### Message Read Webhook Event

- `MessageReadWebhookEvent`

  Complete webhook payload for message.read events (2026-02-03 format)

  - `api_version: string`

    API version for the webhook payload format

  - `created_at: string`

    When the event was created

  - `data: MessageEventV2`

    Unified payload for message webhooks when using `webhook_version: "2026-02-03"`.

    This schema is used for message.sent, message.received, message.delivered, and message.read
    events when the subscription URL includes `?version=2026-02-03`.

    Key differences from V1 (2025-01-01):

    - `direction`: "inbound" or "outbound" instead of `is_from_me` boolean
    - `sender_handle`: Full handle object for the sender
    - `chat`: Nested object with `id`, `is_group`, and `owner_handle`
    - Message fields (`id`, `parts`, `effect`, etc.) are at the top level, not nested in `message`

    Timestamps indicate the message state:

    - `message.sent`: sent_at set, delivered_at=null, read_at=null
    - `message.received`: sent_at set, delivered_at=null, read_at=null
    - `message.delivered`: sent_at set, delivered_at set, read_at=null
    - `message.read`: sent_at set, delivered_at set, read_at set

    - `id: string`

      Message identifier

    - `chat: Chat`

      Chat information

      - `id: string`

        Chat identifier

      - `health_status: HealthStatus`

        **[BETA]** Current health for a chat. Always present — chats start at `HEALTHY` and may shift based on engagement and delivery signals on the conversation. Many `AT_RISK` or `CRITICAL` chats on a single line increase the risk of line flagging.

        Switch on `status` to gate sends or surface line health in your UI — the enum is the long-term contract. Each status carries a `doc_url` that deep-links to the relevant section of the Chat Health guide.

        See the [Chat Health guide](/guides/chats/chat-health) for what each status means and how to react.

        - `doc_url: string`

          Deep-link to the relevant section of the Chat Health guide for this status.

        - `status: "HEALTHY" | "AT_RISK" | "CRITICAL" | "OPTED_OUT"`

          Current health bucket for the chat. See the [Chat Health guide](/guides/chats/chat-health) for what each value means and how to react. `doc_url` deep-links to the relevant section.

          - `"HEALTHY"`

          - `"AT_RISK"`

          - `"CRITICAL"`

          - `"OPTED_OUT"`

        - `updated_at: string`

          When this status last changed.

      - `is_group?: boolean | null`

        Whether this is a group chat

      - `owner_handle?: ChatHandle | null`

        Your phone number's handle. Always has is_me=true.

        - `id: string`

          Unique identifier for this handle

        - `handle: string`

          Phone number (E.164) or email address of the participant

        - `joined_at: string`

          When this participant joined the chat

        - `service: ServiceType`

          Messaging service type

          - `"iMessage"`

          - `"SMS"`

          - `"RCS"`

        - `is_me?: boolean | null`

          Whether this handle belongs to the sender (your phone number)

        - `left_at?: string | null`

          When they left (if applicable)

        - `status?: "active" | "left" | "removed" | null`

          Participant status

          - `"active"`

          - `"left"`

          - `"removed"`

    - `direction: "inbound" | "outbound"`

      Message direction - "outbound" if sent by you, "inbound" if received

      - `"inbound"`

      - `"outbound"`

    - `parts: Array<SchemasTextPartResponse | SchemasMediaPartResponse | SchemasLinkPartResponse>`

      Message parts (text and/or media)

      - `SchemasTextPartResponse`

        A text message part

        - `type: "text"`

          Indicates this is a text message part

          - `"text"`

        - `value: string`

          The text content

        - `text_decorations?: Array<TextDecoration> | null`

          Text decorations applied to character ranges in the value

          - `range: Array<number>`

            Character range `[start, end)` in the `value` string where the decoration applies.
            `start` is inclusive, `end` is exclusive.
            *Characters are measured as UTF-16 code units. Most characters count as 1; some emoji count as 2.*

          - `animation?: "big" | "small" | "shake" | 5 more`

            Animated text effect to apply. Mutually exclusive with `style`.

            - `"big"`

            - `"small"`

            - `"shake"`

            - `"nod"`

            - `"explode"`

            - `"ripple"`

            - `"bloom"`

            - `"jitter"`

          - `style?: "bold" | "italic" | "strikethrough" | "underline"`

            Text style to apply. Mutually exclusive with `animation`.

            - `"bold"`

            - `"italic"`

            - `"strikethrough"`

            - `"underline"`

      - `SchemasMediaPartResponse`

        A media attachment part

        - `id: string`

          Unique attachment identifier

        - `filename: string`

          Original filename

        - `mime_type: string`

          MIME type of the file

        - `size_bytes: number`

          File size in bytes

        - `type: "media"`

          Indicates this is a media attachment part

          - `"media"`

        - `url: string`

          Presigned URL for downloading the attachment (expires in 1 hour).

      - `SchemasLinkPartResponse`

        A rich link preview part

        - `type: "link"`

          Indicates this is a rich link preview part

          - `"link"`

        - `value: string`

          The URL

    - `sender_handle: ChatHandle`

      The handle that sent this message

    - `service: ServiceType`

      Messaging service type

    - `delivered_at?: string | null`

      When the message was delivered. Null if not yet delivered.

    - `effect?: SchemasMessageEffect | null`

      iMessage effect applied to a message (screen or bubble animation)

      - `name?: string`

        Effect name (confetti, fireworks, slam, gentle, etc.)

      - `type?: "screen" | "bubble"`

        Effect category

        - `"screen"`

        - `"bubble"`

    - `idempotency_key?: string | null`

      Idempotency key for deduplication of outbound messages.

    - `preferred_service?: "iMessage" | "SMS" | "RCS" | "auto" | null`

      Preferred messaging service type. Includes "auto" for default fallback behavior.

      - `"iMessage"`

      - `"SMS"`

      - `"RCS"`

      - `"auto"`

    - `read_at?: string | null`

      When the message was read. Null if not yet read.

    - `reply_to?: ReplyTo | null`

      Reference to the message this is replying to (for threaded replies)

      - `message_id?: string`

        ID of the message being replied to

      - `part_index?: number`

        Index of the part being replied to

    - `sent_at?: string | null`

      When the message was sent. Null if not yet sent.

  - `event_id: string`

    Unique identifier for this event (for deduplication)

  - `event_type: WebhookEventType`

    Valid webhook event types that can be subscribed to.

    **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
    Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `"message.sent"`

    - `"message.received"`

    - `"message.read"`

    - `"message.delivered"`

    - `"message.failed"`

    - `"message.edited"`

    - `"reaction.added"`

    - `"reaction.removed"`

    - `"participant.added"`

    - `"participant.removed"`

    - `"chat.created"`

    - `"chat.group_name_updated"`

    - `"chat.group_icon_updated"`

    - `"chat.group_name_update_failed"`

    - `"chat.group_icon_update_failed"`

    - `"chat.typing_indicator.started"`

    - `"chat.typing_indicator.stopped"`

    - `"phone_number.status_updated"`

    - `"call.initiated"`

    - `"call.ringing"`

    - `"call.answered"`

    - `"call.ended"`

    - `"call.failed"`

    - `"call.declined"`

    - `"call.no_answer"`

  - `partner_id: string`

    Partner identifier. Present on all webhooks for cross-referencing.

  - `trace_id: string`

    Trace ID for debugging and correlation across systems.

  - `webhook_version: string`

    Date-based webhook payload version.
    Determined by the `?version=` query parameter in your webhook subscription URL.
    If no version parameter is specified, defaults based on subscription creation date.

### Message Delivered Webhook Event

- `MessageDeliveredWebhookEvent`

  Complete webhook payload for message.delivered events (2026-02-03 format)

  - `api_version: string`

    API version for the webhook payload format

  - `created_at: string`

    When the event was created

  - `data: MessageEventV2`

    Unified payload for message webhooks when using `webhook_version: "2026-02-03"`.

    This schema is used for message.sent, message.received, message.delivered, and message.read
    events when the subscription URL includes `?version=2026-02-03`.

    Key differences from V1 (2025-01-01):

    - `direction`: "inbound" or "outbound" instead of `is_from_me` boolean
    - `sender_handle`: Full handle object for the sender
    - `chat`: Nested object with `id`, `is_group`, and `owner_handle`
    - Message fields (`id`, `parts`, `effect`, etc.) are at the top level, not nested in `message`

    Timestamps indicate the message state:

    - `message.sent`: sent_at set, delivered_at=null, read_at=null
    - `message.received`: sent_at set, delivered_at=null, read_at=null
    - `message.delivered`: sent_at set, delivered_at set, read_at=null
    - `message.read`: sent_at set, delivered_at set, read_at set

    - `id: string`

      Message identifier

    - `chat: Chat`

      Chat information

      - `id: string`

        Chat identifier

      - `health_status: HealthStatus`

        **[BETA]** Current health for a chat. Always present — chats start at `HEALTHY` and may shift based on engagement and delivery signals on the conversation. Many `AT_RISK` or `CRITICAL` chats on a single line increase the risk of line flagging.

        Switch on `status` to gate sends or surface line health in your UI — the enum is the long-term contract. Each status carries a `doc_url` that deep-links to the relevant section of the Chat Health guide.

        See the [Chat Health guide](/guides/chats/chat-health) for what each status means and how to react.

        - `doc_url: string`

          Deep-link to the relevant section of the Chat Health guide for this status.

        - `status: "HEALTHY" | "AT_RISK" | "CRITICAL" | "OPTED_OUT"`

          Current health bucket for the chat. See the [Chat Health guide](/guides/chats/chat-health) for what each value means and how to react. `doc_url` deep-links to the relevant section.

          - `"HEALTHY"`

          - `"AT_RISK"`

          - `"CRITICAL"`

          - `"OPTED_OUT"`

        - `updated_at: string`

          When this status last changed.

      - `is_group?: boolean | null`

        Whether this is a group chat

      - `owner_handle?: ChatHandle | null`

        Your phone number's handle. Always has is_me=true.

        - `id: string`

          Unique identifier for this handle

        - `handle: string`

          Phone number (E.164) or email address of the participant

        - `joined_at: string`

          When this participant joined the chat

        - `service: ServiceType`

          Messaging service type

          - `"iMessage"`

          - `"SMS"`

          - `"RCS"`

        - `is_me?: boolean | null`

          Whether this handle belongs to the sender (your phone number)

        - `left_at?: string | null`

          When they left (if applicable)

        - `status?: "active" | "left" | "removed" | null`

          Participant status

          - `"active"`

          - `"left"`

          - `"removed"`

    - `direction: "inbound" | "outbound"`

      Message direction - "outbound" if sent by you, "inbound" if received

      - `"inbound"`

      - `"outbound"`

    - `parts: Array<SchemasTextPartResponse | SchemasMediaPartResponse | SchemasLinkPartResponse>`

      Message parts (text and/or media)

      - `SchemasTextPartResponse`

        A text message part

        - `type: "text"`

          Indicates this is a text message part

          - `"text"`

        - `value: string`

          The text content

        - `text_decorations?: Array<TextDecoration> | null`

          Text decorations applied to character ranges in the value

          - `range: Array<number>`

            Character range `[start, end)` in the `value` string where the decoration applies.
            `start` is inclusive, `end` is exclusive.
            *Characters are measured as UTF-16 code units. Most characters count as 1; some emoji count as 2.*

          - `animation?: "big" | "small" | "shake" | 5 more`

            Animated text effect to apply. Mutually exclusive with `style`.

            - `"big"`

            - `"small"`

            - `"shake"`

            - `"nod"`

            - `"explode"`

            - `"ripple"`

            - `"bloom"`

            - `"jitter"`

          - `style?: "bold" | "italic" | "strikethrough" | "underline"`

            Text style to apply. Mutually exclusive with `animation`.

            - `"bold"`

            - `"italic"`

            - `"strikethrough"`

            - `"underline"`

      - `SchemasMediaPartResponse`

        A media attachment part

        - `id: string`

          Unique attachment identifier

        - `filename: string`

          Original filename

        - `mime_type: string`

          MIME type of the file

        - `size_bytes: number`

          File size in bytes

        - `type: "media"`

          Indicates this is a media attachment part

          - `"media"`

        - `url: string`

          Presigned URL for downloading the attachment (expires in 1 hour).

      - `SchemasLinkPartResponse`

        A rich link preview part

        - `type: "link"`

          Indicates this is a rich link preview part

          - `"link"`

        - `value: string`

          The URL

    - `sender_handle: ChatHandle`

      The handle that sent this message

    - `service: ServiceType`

      Messaging service type

    - `delivered_at?: string | null`

      When the message was delivered. Null if not yet delivered.

    - `effect?: SchemasMessageEffect | null`

      iMessage effect applied to a message (screen or bubble animation)

      - `name?: string`

        Effect name (confetti, fireworks, slam, gentle, etc.)

      - `type?: "screen" | "bubble"`

        Effect category

        - `"screen"`

        - `"bubble"`

    - `idempotency_key?: string | null`

      Idempotency key for deduplication of outbound messages.

    - `preferred_service?: "iMessage" | "SMS" | "RCS" | "auto" | null`

      Preferred messaging service type. Includes "auto" for default fallback behavior.

      - `"iMessage"`

      - `"SMS"`

      - `"RCS"`

      - `"auto"`

    - `read_at?: string | null`

      When the message was read. Null if not yet read.

    - `reply_to?: ReplyTo | null`

      Reference to the message this is replying to (for threaded replies)

      - `message_id?: string`

        ID of the message being replied to

      - `part_index?: number`

        Index of the part being replied to

    - `sent_at?: string | null`

      When the message was sent. Null if not yet sent.

  - `event_id: string`

    Unique identifier for this event (for deduplication)

  - `event_type: WebhookEventType`

    Valid webhook event types that can be subscribed to.

    **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
    Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `"message.sent"`

    - `"message.received"`

    - `"message.read"`

    - `"message.delivered"`

    - `"message.failed"`

    - `"message.edited"`

    - `"reaction.added"`

    - `"reaction.removed"`

    - `"participant.added"`

    - `"participant.removed"`

    - `"chat.created"`

    - `"chat.group_name_updated"`

    - `"chat.group_icon_updated"`

    - `"chat.group_name_update_failed"`

    - `"chat.group_icon_update_failed"`

    - `"chat.typing_indicator.started"`

    - `"chat.typing_indicator.stopped"`

    - `"phone_number.status_updated"`

    - `"call.initiated"`

    - `"call.ringing"`

    - `"call.answered"`

    - `"call.ended"`

    - `"call.failed"`

    - `"call.declined"`

    - `"call.no_answer"`

  - `partner_id: string`

    Partner identifier. Present on all webhooks for cross-referencing.

  - `trace_id: string`

    Trace ID for debugging and correlation across systems.

  - `webhook_version: string`

    Date-based webhook payload version.
    Determined by the `?version=` query parameter in your webhook subscription URL.
    If no version parameter is specified, defaults based on subscription creation date.

### Message Failed Webhook Event

- `MessageFailedWebhookEvent`

  Complete webhook payload for message.failed events

  - `api_version: string`

    API version for the webhook payload format

  - `created_at: string`

    When the event was created

  - `data: Data`

    Error details for message.failed webhook events.
    See [WebhookErrorCode](#/components/schemas/WebhookErrorCode) for the full error code reference.

    - `code: number`

      Error codes in webhook failure events (3007, 4001).

    - `failed_at: string`

      When the failure was detected

    - `chat_id?: string`

      Chat identifier (UUID)

    - `message_id?: string`

      Message identifier (UUID)

    - `reason?: string`

      Human-readable description of the failure

  - `event_id: string`

    Unique identifier for this event (for deduplication)

  - `event_type: WebhookEventType`

    Valid webhook event types that can be subscribed to.

    **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
    Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `"message.sent"`

    - `"message.received"`

    - `"message.read"`

    - `"message.delivered"`

    - `"message.failed"`

    - `"message.edited"`

    - `"reaction.added"`

    - `"reaction.removed"`

    - `"participant.added"`

    - `"participant.removed"`

    - `"chat.created"`

    - `"chat.group_name_updated"`

    - `"chat.group_icon_updated"`

    - `"chat.group_name_update_failed"`

    - `"chat.group_icon_update_failed"`

    - `"chat.typing_indicator.started"`

    - `"chat.typing_indicator.stopped"`

    - `"phone_number.status_updated"`

    - `"call.initiated"`

    - `"call.ringing"`

    - `"call.answered"`

    - `"call.ended"`

    - `"call.failed"`

    - `"call.declined"`

    - `"call.no_answer"`

  - `partner_id: string`

    Partner identifier. Present on all webhooks for cross-referencing.

  - `trace_id: string`

    Trace ID for debugging and correlation across systems.

  - `webhook_version: string`

    Date-based webhook payload version.
    Determined by the `?version=` query parameter in your webhook subscription URL.
    If no version parameter is specified, defaults based on subscription creation date.

### Message Edited Webhook Event

- `MessageEditedWebhookEvent`

  Complete webhook payload for message.edited events (2026-02-03 format only)

  - `api_version: string`

    API version for the webhook payload format

  - `created_at: string`

    When the event was created

  - `data: Data`

    Payload for `message.edited` events (2026-02-03 format).

    Describes which part of a message was edited and when. Only text parts can be edited.
    Only available for subscriptions using `webhook_version: "2026-02-03"`.

    - `id: string`

      Message identifier

    - `chat: Chat`

      Chat context

      - `id: string`

        Chat identifier

      - `health_status: HealthStatus`

        **[BETA]** Current health for a chat. Always present — chats start at `HEALTHY` and may shift based on engagement and delivery signals on the conversation. Many `AT_RISK` or `CRITICAL` chats on a single line increase the risk of line flagging.

        Switch on `status` to gate sends or surface line health in your UI — the enum is the long-term contract. Each status carries a `doc_url` that deep-links to the relevant section of the Chat Health guide.

        See the [Chat Health guide](/guides/chats/chat-health) for what each status means and how to react.

        - `doc_url: string`

          Deep-link to the relevant section of the Chat Health guide for this status.

        - `status: "HEALTHY" | "AT_RISK" | "CRITICAL" | "OPTED_OUT"`

          Current health bucket for the chat. See the [Chat Health guide](/guides/chats/chat-health) for what each value means and how to react. `doc_url` deep-links to the relevant section.

          - `"HEALTHY"`

          - `"AT_RISK"`

          - `"CRITICAL"`

          - `"OPTED_OUT"`

        - `updated_at: string`

          When this status last changed.

      - `is_group: boolean`

        Whether this is a group chat

      - `owner_handle: ChatHandle`

        The handle that owns this chat (your phone number)

        - `id: string`

          Unique identifier for this handle

        - `handle: string`

          Phone number (E.164) or email address of the participant

        - `joined_at: string`

          When this participant joined the chat

        - `service: ServiceType`

          Messaging service type

          - `"iMessage"`

          - `"SMS"`

          - `"RCS"`

        - `is_me?: boolean | null`

          Whether this handle belongs to the sender (your phone number)

        - `left_at?: string | null`

          When they left (if applicable)

        - `status?: "active" | "left" | "removed" | null`

          Participant status

          - `"active"`

          - `"left"`

          - `"removed"`

    - `direction: "outbound" | "inbound"`

      "outbound" if you sent the original message, "inbound" if you received it

      - `"outbound"`

      - `"inbound"`

    - `edited_at: string`

      When the edit occurred

    - `part: Part`

      The edited part

      - `index: number`

        Zero-based index of the edited part within the message

      - `text: string`

        New text content of the part

    - `sender_handle: ChatHandle`

      The handle that sent (and edited) this message

  - `event_id: string`

    Unique identifier for this event (for deduplication)

  - `event_type: WebhookEventType`

    Valid webhook event types that can be subscribed to.

    **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
    Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `"message.sent"`

    - `"message.received"`

    - `"message.read"`

    - `"message.delivered"`

    - `"message.failed"`

    - `"message.edited"`

    - `"reaction.added"`

    - `"reaction.removed"`

    - `"participant.added"`

    - `"participant.removed"`

    - `"chat.created"`

    - `"chat.group_name_updated"`

    - `"chat.group_icon_updated"`

    - `"chat.group_name_update_failed"`

    - `"chat.group_icon_update_failed"`

    - `"chat.typing_indicator.started"`

    - `"chat.typing_indicator.stopped"`

    - `"phone_number.status_updated"`

    - `"call.initiated"`

    - `"call.ringing"`

    - `"call.answered"`

    - `"call.ended"`

    - `"call.failed"`

    - `"call.declined"`

    - `"call.no_answer"`

  - `partner_id: string`

    Partner identifier. Present on all webhooks for cross-referencing.

  - `trace_id: string`

    Trace ID for debugging and correlation across systems.

  - `webhook_version: string`

    Date-based webhook payload version.
    Determined by the `?version=` query parameter in your webhook subscription URL.
    If no version parameter is specified, defaults based on subscription creation date.

### Reaction Added Webhook Event

- `ReactionAddedWebhookEvent`

  Complete webhook payload for reaction.added events

  - `api_version: string`

    API version for the webhook payload format

  - `created_at: string`

    When the event was created

  - `data: ReactionEventBase`

    Payload for reaction.added webhook events

    - `is_from_me: boolean`

      Whether this reaction was from the owner of the phone number (true) or from someone else (false)

    - `reaction_type: ReactionType`

      Type of reaction. Standard iMessage tapbacks are love, like, dislike, laugh, emphasize, question.
      Custom emoji reactions have type "custom" with the actual emoji in the custom_emoji field.
      Sticker reactions have type "sticker" with sticker attachment details in the sticker field.

      - `"love"`

      - `"like"`

      - `"dislike"`

      - `"laugh"`

      - `"emphasize"`

      - `"question"`

      - `"custom"`

      - `"sticker"`

    - `chat_id?: string`

      Chat identifier (UUID)

    - `custom_emoji?: string | null`

      The actual emoji when reaction_type is "custom". Null for standard tapbacks.

    - `from?: string`

      DEPRECATED: Use from_handle instead. Phone number or email address of the person who added/removed the reaction.

    - `from_handle?: ChatHandle`

      The person who added/removed the reaction as a full handle object

      - `id: string`

        Unique identifier for this handle

      - `handle: string`

        Phone number (E.164) or email address of the participant

      - `joined_at: string`

        When this participant joined the chat

      - `service: ServiceType`

        Messaging service type

        - `"iMessage"`

        - `"SMS"`

        - `"RCS"`

      - `is_me?: boolean | null`

        Whether this handle belongs to the sender (your phone number)

      - `left_at?: string | null`

        When they left (if applicable)

      - `status?: "active" | "left" | "removed" | null`

        Participant status

        - `"active"`

        - `"left"`

        - `"removed"`

    - `message_id?: string`

      Message identifier (UUID) that the reaction was added to or removed from

    - `part_index?: number`

      Index of the message part that was reacted to (0-based)

    - `reacted_at?: string`

      When the reaction was added or removed

    - `service?: ServiceType`

      Messaging service type

    - `sticker?: Sticker | null`

      Sticker attachment details when reaction_type is "sticker". Null for non-sticker reactions.

      - `file_name?: string`

        Filename of the sticker

      - `height?: number`

        Sticker image height in pixels

      - `mime_type?: string`

        MIME type of the sticker image

      - `url?: string`

        Presigned URL for downloading the sticker image (expires in 1 hour).

      - `width?: number`

        Sticker image width in pixels

  - `event_id: string`

    Unique identifier for this event (for deduplication)

  - `event_type: WebhookEventType`

    Valid webhook event types that can be subscribed to.

    **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
    Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `"message.sent"`

    - `"message.received"`

    - `"message.read"`

    - `"message.delivered"`

    - `"message.failed"`

    - `"message.edited"`

    - `"reaction.added"`

    - `"reaction.removed"`

    - `"participant.added"`

    - `"participant.removed"`

    - `"chat.created"`

    - `"chat.group_name_updated"`

    - `"chat.group_icon_updated"`

    - `"chat.group_name_update_failed"`

    - `"chat.group_icon_update_failed"`

    - `"chat.typing_indicator.started"`

    - `"chat.typing_indicator.stopped"`

    - `"phone_number.status_updated"`

    - `"call.initiated"`

    - `"call.ringing"`

    - `"call.answered"`

    - `"call.ended"`

    - `"call.failed"`

    - `"call.declined"`

    - `"call.no_answer"`

  - `partner_id: string`

    Partner identifier. Present on all webhooks for cross-referencing.

  - `trace_id: string`

    Trace ID for debugging and correlation across systems.

  - `webhook_version: string`

    Date-based webhook payload version.
    Determined by the `?version=` query parameter in your webhook subscription URL.
    If no version parameter is specified, defaults based on subscription creation date.

### Reaction Removed Webhook Event

- `ReactionRemovedWebhookEvent`

  Complete webhook payload for reaction.removed events

  - `api_version: string`

    API version for the webhook payload format

  - `created_at: string`

    When the event was created

  - `data: ReactionEventBase`

    Payload for reaction.removed webhook events

    - `is_from_me: boolean`

      Whether this reaction was from the owner of the phone number (true) or from someone else (false)

    - `reaction_type: ReactionType`

      Type of reaction. Standard iMessage tapbacks are love, like, dislike, laugh, emphasize, question.
      Custom emoji reactions have type "custom" with the actual emoji in the custom_emoji field.
      Sticker reactions have type "sticker" with sticker attachment details in the sticker field.

      - `"love"`

      - `"like"`

      - `"dislike"`

      - `"laugh"`

      - `"emphasize"`

      - `"question"`

      - `"custom"`

      - `"sticker"`

    - `chat_id?: string`

      Chat identifier (UUID)

    - `custom_emoji?: string | null`

      The actual emoji when reaction_type is "custom". Null for standard tapbacks.

    - `from?: string`

      DEPRECATED: Use from_handle instead. Phone number or email address of the person who added/removed the reaction.

    - `from_handle?: ChatHandle`

      The person who added/removed the reaction as a full handle object

      - `id: string`

        Unique identifier for this handle

      - `handle: string`

        Phone number (E.164) or email address of the participant

      - `joined_at: string`

        When this participant joined the chat

      - `service: ServiceType`

        Messaging service type

        - `"iMessage"`

        - `"SMS"`

        - `"RCS"`

      - `is_me?: boolean | null`

        Whether this handle belongs to the sender (your phone number)

      - `left_at?: string | null`

        When they left (if applicable)

      - `status?: "active" | "left" | "removed" | null`

        Participant status

        - `"active"`

        - `"left"`

        - `"removed"`

    - `message_id?: string`

      Message identifier (UUID) that the reaction was added to or removed from

    - `part_index?: number`

      Index of the message part that was reacted to (0-based)

    - `reacted_at?: string`

      When the reaction was added or removed

    - `service?: ServiceType`

      Messaging service type

    - `sticker?: Sticker | null`

      Sticker attachment details when reaction_type is "sticker". Null for non-sticker reactions.

      - `file_name?: string`

        Filename of the sticker

      - `height?: number`

        Sticker image height in pixels

      - `mime_type?: string`

        MIME type of the sticker image

      - `url?: string`

        Presigned URL for downloading the sticker image (expires in 1 hour).

      - `width?: number`

        Sticker image width in pixels

  - `event_id: string`

    Unique identifier for this event (for deduplication)

  - `event_type: WebhookEventType`

    Valid webhook event types that can be subscribed to.

    **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
    Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `"message.sent"`

    - `"message.received"`

    - `"message.read"`

    - `"message.delivered"`

    - `"message.failed"`

    - `"message.edited"`

    - `"reaction.added"`

    - `"reaction.removed"`

    - `"participant.added"`

    - `"participant.removed"`

    - `"chat.created"`

    - `"chat.group_name_updated"`

    - `"chat.group_icon_updated"`

    - `"chat.group_name_update_failed"`

    - `"chat.group_icon_update_failed"`

    - `"chat.typing_indicator.started"`

    - `"chat.typing_indicator.stopped"`

    - `"phone_number.status_updated"`

    - `"call.initiated"`

    - `"call.ringing"`

    - `"call.answered"`

    - `"call.ended"`

    - `"call.failed"`

    - `"call.declined"`

    - `"call.no_answer"`

  - `partner_id: string`

    Partner identifier. Present on all webhooks for cross-referencing.

  - `trace_id: string`

    Trace ID for debugging and correlation across systems.

  - `webhook_version: string`

    Date-based webhook payload version.
    Determined by the `?version=` query parameter in your webhook subscription URL.
    If no version parameter is specified, defaults based on subscription creation date.

### Participant Added Webhook Event

- `ParticipantAddedWebhookEvent`

  Complete webhook payload for participant.added events

  - `api_version: string`

    API version for the webhook payload format

  - `created_at: string`

    When the event was created

  - `data: Data`

    Payload for participant.added webhook events

    - `handle: string`

      DEPRECATED: Use participant instead. Handle (phone number or email address) of the added participant.

    - `added_at?: string`

      When the participant was added

    - `chat_id?: string`

      Chat identifier (UUID) of the group chat

    - `participant?: ChatHandle`

      The added participant as a full handle object

      - `id: string`

        Unique identifier for this handle

      - `handle: string`

        Phone number (E.164) or email address of the participant

      - `joined_at: string`

        When this participant joined the chat

      - `service: ServiceType`

        Messaging service type

        - `"iMessage"`

        - `"SMS"`

        - `"RCS"`

      - `is_me?: boolean | null`

        Whether this handle belongs to the sender (your phone number)

      - `left_at?: string | null`

        When they left (if applicable)

      - `status?: "active" | "left" | "removed" | null`

        Participant status

        - `"active"`

        - `"left"`

        - `"removed"`

  - `event_id: string`

    Unique identifier for this event (for deduplication)

  - `event_type: WebhookEventType`

    Valid webhook event types that can be subscribed to.

    **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
    Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `"message.sent"`

    - `"message.received"`

    - `"message.read"`

    - `"message.delivered"`

    - `"message.failed"`

    - `"message.edited"`

    - `"reaction.added"`

    - `"reaction.removed"`

    - `"participant.added"`

    - `"participant.removed"`

    - `"chat.created"`

    - `"chat.group_name_updated"`

    - `"chat.group_icon_updated"`

    - `"chat.group_name_update_failed"`

    - `"chat.group_icon_update_failed"`

    - `"chat.typing_indicator.started"`

    - `"chat.typing_indicator.stopped"`

    - `"phone_number.status_updated"`

    - `"call.initiated"`

    - `"call.ringing"`

    - `"call.answered"`

    - `"call.ended"`

    - `"call.failed"`

    - `"call.declined"`

    - `"call.no_answer"`

  - `partner_id: string`

    Partner identifier. Present on all webhooks for cross-referencing.

  - `trace_id: string`

    Trace ID for debugging and correlation across systems.

  - `webhook_version: string`

    Date-based webhook payload version.
    Determined by the `?version=` query parameter in your webhook subscription URL.
    If no version parameter is specified, defaults based on subscription creation date.

### Participant Removed Webhook Event

- `ParticipantRemovedWebhookEvent`

  Complete webhook payload for participant.removed events

  - `api_version: string`

    API version for the webhook payload format

  - `created_at: string`

    When the event was created

  - `data: Data`

    Payload for participant.removed webhook events

    - `handle: string`

      DEPRECATED: Use participant instead. Handle (phone number or email address) of the removed participant.

    - `chat_id?: string`

      Chat identifier (UUID) of the group chat

    - `participant?: ChatHandle`

      The removed participant as a full handle object

      - `id: string`

        Unique identifier for this handle

      - `handle: string`

        Phone number (E.164) or email address of the participant

      - `joined_at: string`

        When this participant joined the chat

      - `service: ServiceType`

        Messaging service type

        - `"iMessage"`

        - `"SMS"`

        - `"RCS"`

      - `is_me?: boolean | null`

        Whether this handle belongs to the sender (your phone number)

      - `left_at?: string | null`

        When they left (if applicable)

      - `status?: "active" | "left" | "removed" | null`

        Participant status

        - `"active"`

        - `"left"`

        - `"removed"`

    - `removed_at?: string`

      When the participant was removed

  - `event_id: string`

    Unique identifier for this event (for deduplication)

  - `event_type: WebhookEventType`

    Valid webhook event types that can be subscribed to.

    **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
    Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `"message.sent"`

    - `"message.received"`

    - `"message.read"`

    - `"message.delivered"`

    - `"message.failed"`

    - `"message.edited"`

    - `"reaction.added"`

    - `"reaction.removed"`

    - `"participant.added"`

    - `"participant.removed"`

    - `"chat.created"`

    - `"chat.group_name_updated"`

    - `"chat.group_icon_updated"`

    - `"chat.group_name_update_failed"`

    - `"chat.group_icon_update_failed"`

    - `"chat.typing_indicator.started"`

    - `"chat.typing_indicator.stopped"`

    - `"phone_number.status_updated"`

    - `"call.initiated"`

    - `"call.ringing"`

    - `"call.answered"`

    - `"call.ended"`

    - `"call.failed"`

    - `"call.declined"`

    - `"call.no_answer"`

  - `partner_id: string`

    Partner identifier. Present on all webhooks for cross-referencing.

  - `trace_id: string`

    Trace ID for debugging and correlation across systems.

  - `webhook_version: string`

    Date-based webhook payload version.
    Determined by the `?version=` query parameter in your webhook subscription URL.
    If no version parameter is specified, defaults based on subscription creation date.

### Chat Created Webhook Event

- `ChatCreatedWebhookEvent`

  Complete webhook payload for chat.created events

  - `api_version: string`

    API version for the webhook payload format

  - `created_at: string`

    When the event was created

  - `data: Data`

    Payload for chat.created webhook events. Matches GET /v3/chats/{chatId} response.

    - `id: string`

      Unique identifier for the chat

    - `created_at: string`

      When the chat was created

    - `display_name: string | null`

      Display name for the chat. Defaults to a comma-separated list of recipient handles. Can be updated for group chats.

    - `handles: Array<ChatHandle>`

      List of chat participants with full handle details. Always contains at least two handles (your phone number and the other participant).

      - `id: string`

        Unique identifier for this handle

      - `handle: string`

        Phone number (E.164) or email address of the participant

      - `joined_at: string`

        When this participant joined the chat

      - `service: ServiceType`

        Messaging service type

        - `"iMessage"`

        - `"SMS"`

        - `"RCS"`

      - `is_me?: boolean | null`

        Whether this handle belongs to the sender (your phone number)

      - `left_at?: string | null`

        When they left (if applicable)

      - `status?: "active" | "left" | "removed" | null`

        Participant status

        - `"active"`

        - `"left"`

        - `"removed"`

    - `health_status: HealthStatus`

      **[BETA]** Current health for a chat. Always present — chats start at `HEALTHY` and may shift based on engagement and delivery signals on the conversation. Many `AT_RISK` or `CRITICAL` chats on a single line increase the risk of line flagging.

      Switch on `status` to gate sends or surface line health in your UI — the enum is the long-term contract. Each status carries a `doc_url` that deep-links to the relevant section of the Chat Health guide.

      See the [Chat Health guide](/guides/chats/chat-health) for what each status means and how to react.

      - `doc_url: string`

        Deep-link to the relevant section of the Chat Health guide for this status.

      - `status: "HEALTHY" | "AT_RISK" | "CRITICAL" | "OPTED_OUT"`

        Current health bucket for the chat. See the [Chat Health guide](/guides/chats/chat-health) for what each value means and how to react. `doc_url` deep-links to the relevant section.

        - `"HEALTHY"`

        - `"AT_RISK"`

        - `"CRITICAL"`

        - `"OPTED_OUT"`

      - `updated_at: string`

        When this status last changed.

    - `is_group: boolean`

      Whether this is a group chat

    - `updated_at: string`

      When the chat was last updated

    - `service?: ServiceType | null`

      Messaging service type

  - `event_id: string`

    Unique identifier for this event (for deduplication)

  - `event_type: WebhookEventType`

    Valid webhook event types that can be subscribed to.

    **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
    Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `"message.sent"`

    - `"message.received"`

    - `"message.read"`

    - `"message.delivered"`

    - `"message.failed"`

    - `"message.edited"`

    - `"reaction.added"`

    - `"reaction.removed"`

    - `"participant.added"`

    - `"participant.removed"`

    - `"chat.created"`

    - `"chat.group_name_updated"`

    - `"chat.group_icon_updated"`

    - `"chat.group_name_update_failed"`

    - `"chat.group_icon_update_failed"`

    - `"chat.typing_indicator.started"`

    - `"chat.typing_indicator.stopped"`

    - `"phone_number.status_updated"`

    - `"call.initiated"`

    - `"call.ringing"`

    - `"call.answered"`

    - `"call.ended"`

    - `"call.failed"`

    - `"call.declined"`

    - `"call.no_answer"`

  - `partner_id: string`

    Partner identifier. Present on all webhooks for cross-referencing.

  - `trace_id: string`

    Trace ID for debugging and correlation across systems.

  - `webhook_version: string`

    Date-based webhook payload version.
    Determined by the `?version=` query parameter in your webhook subscription URL.
    If no version parameter is specified, defaults based on subscription creation date.

### Chat Group Name Updated Webhook Event

- `ChatGroupNameUpdatedWebhookEvent`

  Complete webhook payload for chat.group_name_updated events

  - `api_version: string`

    API version for the webhook payload format

  - `created_at: string`

    When the event was created

  - `data: Data`

    Payload for chat.group_name_updated webhook events

    - `chat_id: string`

      Chat identifier (UUID) of the group chat

    - `updated_at: string`

      When the update occurred

    - `changed_by_handle?: ChatHandle | null`

      The handle who made the change.

      - `id: string`

        Unique identifier for this handle

      - `handle: string`

        Phone number (E.164) or email address of the participant

      - `joined_at: string`

        When this participant joined the chat

      - `service: ServiceType`

        Messaging service type

        - `"iMessage"`

        - `"SMS"`

        - `"RCS"`

      - `is_me?: boolean | null`

        Whether this handle belongs to the sender (your phone number)

      - `left_at?: string | null`

        When they left (if applicable)

      - `status?: "active" | "left" | "removed" | null`

        Participant status

        - `"active"`

        - `"left"`

        - `"removed"`

    - `new_value?: string | null`

      New group name (null if the name was removed)

    - `old_value?: string | null`

      Previous group name (null if no previous name)

  - `event_id: string`

    Unique identifier for this event (for deduplication)

  - `event_type: WebhookEventType`

    Valid webhook event types that can be subscribed to.

    **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
    Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `"message.sent"`

    - `"message.received"`

    - `"message.read"`

    - `"message.delivered"`

    - `"message.failed"`

    - `"message.edited"`

    - `"reaction.added"`

    - `"reaction.removed"`

    - `"participant.added"`

    - `"participant.removed"`

    - `"chat.created"`

    - `"chat.group_name_updated"`

    - `"chat.group_icon_updated"`

    - `"chat.group_name_update_failed"`

    - `"chat.group_icon_update_failed"`

    - `"chat.typing_indicator.started"`

    - `"chat.typing_indicator.stopped"`

    - `"phone_number.status_updated"`

    - `"call.initiated"`

    - `"call.ringing"`

    - `"call.answered"`

    - `"call.ended"`

    - `"call.failed"`

    - `"call.declined"`

    - `"call.no_answer"`

  - `partner_id: string`

    Partner identifier. Present on all webhooks for cross-referencing.

  - `trace_id: string`

    Trace ID for debugging and correlation across systems.

  - `webhook_version: string`

    Date-based webhook payload version.
    Determined by the `?version=` query parameter in your webhook subscription URL.
    If no version parameter is specified, defaults based on subscription creation date.

### Chat Group Icon Updated Webhook Event

- `ChatGroupIconUpdatedWebhookEvent`

  Complete webhook payload for chat.group_icon_updated events

  - `api_version: string`

    API version for the webhook payload format

  - `created_at: string`

    When the event was created

  - `data: Data`

    Payload for chat.group_icon_updated webhook events

    - `chat_id: string`

      Chat identifier (UUID) of the group chat

    - `updated_at: string`

      When the update occurred

    - `changed_by_handle?: ChatHandle | null`

      The handle who made the change.

      - `id: string`

        Unique identifier for this handle

      - `handle: string`

        Phone number (E.164) or email address of the participant

      - `joined_at: string`

        When this participant joined the chat

      - `service: ServiceType`

        Messaging service type

        - `"iMessage"`

        - `"SMS"`

        - `"RCS"`

      - `is_me?: boolean | null`

        Whether this handle belongs to the sender (your phone number)

      - `left_at?: string | null`

        When they left (if applicable)

      - `status?: "active" | "left" | "removed" | null`

        Participant status

        - `"active"`

        - `"left"`

        - `"removed"`

    - `new_value?: string | null`

      New icon URL (null if the icon was removed)

    - `old_value?: string | null`

      Previous icon URL (null if no previous icon)

  - `event_id: string`

    Unique identifier for this event (for deduplication)

  - `event_type: WebhookEventType`

    Valid webhook event types that can be subscribed to.

    **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
    Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `"message.sent"`

    - `"message.received"`

    - `"message.read"`

    - `"message.delivered"`

    - `"message.failed"`

    - `"message.edited"`

    - `"reaction.added"`

    - `"reaction.removed"`

    - `"participant.added"`

    - `"participant.removed"`

    - `"chat.created"`

    - `"chat.group_name_updated"`

    - `"chat.group_icon_updated"`

    - `"chat.group_name_update_failed"`

    - `"chat.group_icon_update_failed"`

    - `"chat.typing_indicator.started"`

    - `"chat.typing_indicator.stopped"`

    - `"phone_number.status_updated"`

    - `"call.initiated"`

    - `"call.ringing"`

    - `"call.answered"`

    - `"call.ended"`

    - `"call.failed"`

    - `"call.declined"`

    - `"call.no_answer"`

  - `partner_id: string`

    Partner identifier. Present on all webhooks for cross-referencing.

  - `trace_id: string`

    Trace ID for debugging and correlation across systems.

  - `webhook_version: string`

    Date-based webhook payload version.
    Determined by the `?version=` query parameter in your webhook subscription URL.
    If no version parameter is specified, defaults based on subscription creation date.

### Chat Group Name Update Failed Webhook Event

- `ChatGroupNameUpdateFailedWebhookEvent`

  Complete webhook payload for chat.group_name_update_failed events

  - `api_version: string`

    API version for the webhook payload format

  - `created_at: string`

    When the event was created

  - `data: Data`

    Error details for chat.group_name_update_failed webhook events.
    See [WebhookErrorCode](#/components/schemas/WebhookErrorCode) for the full error code reference.

    - `chat_id: string`

      Chat identifier (UUID) of the group chat

    - `error_code: number`

      Error codes in webhook failure events (3007, 4001).

    - `failed_at: string`

      When the failure was detected

  - `event_id: string`

    Unique identifier for this event (for deduplication)

  - `event_type: WebhookEventType`

    Valid webhook event types that can be subscribed to.

    **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
    Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `"message.sent"`

    - `"message.received"`

    - `"message.read"`

    - `"message.delivered"`

    - `"message.failed"`

    - `"message.edited"`

    - `"reaction.added"`

    - `"reaction.removed"`

    - `"participant.added"`

    - `"participant.removed"`

    - `"chat.created"`

    - `"chat.group_name_updated"`

    - `"chat.group_icon_updated"`

    - `"chat.group_name_update_failed"`

    - `"chat.group_icon_update_failed"`

    - `"chat.typing_indicator.started"`

    - `"chat.typing_indicator.stopped"`

    - `"phone_number.status_updated"`

    - `"call.initiated"`

    - `"call.ringing"`

    - `"call.answered"`

    - `"call.ended"`

    - `"call.failed"`

    - `"call.declined"`

    - `"call.no_answer"`

  - `partner_id: string`

    Partner identifier. Present on all webhooks for cross-referencing.

  - `trace_id: string`

    Trace ID for debugging and correlation across systems.

  - `webhook_version: string`

    Date-based webhook payload version.
    Determined by the `?version=` query parameter in your webhook subscription URL.
    If no version parameter is specified, defaults based on subscription creation date.

### Chat Group Icon Update Failed Webhook Event

- `ChatGroupIconUpdateFailedWebhookEvent`

  Complete webhook payload for chat.group_icon_update_failed events

  - `api_version: string`

    API version for the webhook payload format

  - `created_at: string`

    When the event was created

  - `data: Data`

    Error details for chat.group_icon_update_failed webhook events.
    See [WebhookErrorCode](#/components/schemas/WebhookErrorCode) for the full error code reference.

    - `chat_id: string`

      Chat identifier (UUID) of the group chat

    - `error_code: number`

      Error codes in webhook failure events (3007, 4001).

    - `failed_at: string`

      When the failure was detected

  - `event_id: string`

    Unique identifier for this event (for deduplication)

  - `event_type: WebhookEventType`

    Valid webhook event types that can be subscribed to.

    **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
    Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `"message.sent"`

    - `"message.received"`

    - `"message.read"`

    - `"message.delivered"`

    - `"message.failed"`

    - `"message.edited"`

    - `"reaction.added"`

    - `"reaction.removed"`

    - `"participant.added"`

    - `"participant.removed"`

    - `"chat.created"`

    - `"chat.group_name_updated"`

    - `"chat.group_icon_updated"`

    - `"chat.group_name_update_failed"`

    - `"chat.group_icon_update_failed"`

    - `"chat.typing_indicator.started"`

    - `"chat.typing_indicator.stopped"`

    - `"phone_number.status_updated"`

    - `"call.initiated"`

    - `"call.ringing"`

    - `"call.answered"`

    - `"call.ended"`

    - `"call.failed"`

    - `"call.declined"`

    - `"call.no_answer"`

  - `partner_id: string`

    Partner identifier. Present on all webhooks for cross-referencing.

  - `trace_id: string`

    Trace ID for debugging and correlation across systems.

  - `webhook_version: string`

    Date-based webhook payload version.
    Determined by the `?version=` query parameter in your webhook subscription URL.
    If no version parameter is specified, defaults based on subscription creation date.

### Chat Typing Indicator Started Webhook Event

- `ChatTypingIndicatorStartedWebhookEvent`

  Complete webhook payload for chat.typing_indicator.started events

  - `api_version: string`

    API version for the webhook payload format

  - `created_at: string`

    When the event was created

  - `data: Data`

    Payload for chat.typing_indicator.started webhook events

    - `chat_id: string`

      Chat identifier

  - `event_id: string`

    Unique identifier for this event (for deduplication)

  - `event_type: WebhookEventType`

    Valid webhook event types that can be subscribed to.

    **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
    Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `"message.sent"`

    - `"message.received"`

    - `"message.read"`

    - `"message.delivered"`

    - `"message.failed"`

    - `"message.edited"`

    - `"reaction.added"`

    - `"reaction.removed"`

    - `"participant.added"`

    - `"participant.removed"`

    - `"chat.created"`

    - `"chat.group_name_updated"`

    - `"chat.group_icon_updated"`

    - `"chat.group_name_update_failed"`

    - `"chat.group_icon_update_failed"`

    - `"chat.typing_indicator.started"`

    - `"chat.typing_indicator.stopped"`

    - `"phone_number.status_updated"`

    - `"call.initiated"`

    - `"call.ringing"`

    - `"call.answered"`

    - `"call.ended"`

    - `"call.failed"`

    - `"call.declined"`

    - `"call.no_answer"`

  - `partner_id: string`

    Partner identifier. Present on all webhooks for cross-referencing.

  - `trace_id: string`

    Trace ID for debugging and correlation across systems.

  - `webhook_version: string`

    Date-based webhook payload version.
    Determined by the `?version=` query parameter in your webhook subscription URL.
    If no version parameter is specified, defaults based on subscription creation date.

### Chat Typing Indicator Stopped Webhook Event

- `ChatTypingIndicatorStoppedWebhookEvent`

  Complete webhook payload for chat.typing_indicator.stopped events

  - `api_version: string`

    API version for the webhook payload format

  - `created_at: string`

    When the event was created

  - `data: Data`

    Payload for chat.typing_indicator.stopped webhook events

    - `chat_id: string`

      Chat identifier

  - `event_id: string`

    Unique identifier for this event (for deduplication)

  - `event_type: WebhookEventType`

    Valid webhook event types that can be subscribed to.

    **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
    Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `"message.sent"`

    - `"message.received"`

    - `"message.read"`

    - `"message.delivered"`

    - `"message.failed"`

    - `"message.edited"`

    - `"reaction.added"`

    - `"reaction.removed"`

    - `"participant.added"`

    - `"participant.removed"`

    - `"chat.created"`

    - `"chat.group_name_updated"`

    - `"chat.group_icon_updated"`

    - `"chat.group_name_update_failed"`

    - `"chat.group_icon_update_failed"`

    - `"chat.typing_indicator.started"`

    - `"chat.typing_indicator.stopped"`

    - `"phone_number.status_updated"`

    - `"call.initiated"`

    - `"call.ringing"`

    - `"call.answered"`

    - `"call.ended"`

    - `"call.failed"`

    - `"call.declined"`

    - `"call.no_answer"`

  - `partner_id: string`

    Partner identifier. Present on all webhooks for cross-referencing.

  - `trace_id: string`

    Trace ID for debugging and correlation across systems.

  - `webhook_version: string`

    Date-based webhook payload version.
    Determined by the `?version=` query parameter in your webhook subscription URL.
    If no version parameter is specified, defaults based on subscription creation date.

### Phone Number Status Updated Webhook Event

- `PhoneNumberStatusUpdatedWebhookEvent`

  Complete webhook payload for phone_number.status_updated events

  - `api_version: string`

    API version for the webhook payload format

  - `created_at: string`

    When the event was created

  - `data: Data`

    Payload for phone_number.status_updated webhook events

    - `changed_at: string`

      When the status change occurred

    - `new_health_status: "HEALTHY" | "AT_RISK" | "CRITICAL"`

      The new line health status

      - `"HEALTHY"`

      - `"AT_RISK"`

      - `"CRITICAL"`

    - `new_status: "ACTIVE" | "FLAGGED"`

      The new service status

      - `"ACTIVE"`

      - `"FLAGGED"`

    - `phone_number: string`

      Phone number in E.164 format

    - `previous_health_status: "HEALTHY" | "AT_RISK" | "CRITICAL"`

      The previous line health status

      - `"HEALTHY"`

      - `"AT_RISK"`

      - `"CRITICAL"`

    - `previous_status: "ACTIVE" | "FLAGGED"`

      The previous service status

      - `"ACTIVE"`

      - `"FLAGGED"`

  - `event_id: string`

    Unique identifier for this event (for deduplication)

  - `event_type: "message.sent" | "message.received" | "message.read" | 22 more`

    The type of event

    - `"message.sent"`

    - `"message.received"`

    - `"message.read"`

    - `"message.delivered"`

    - `"message.failed"`

    - `"message.edited"`

    - `"reaction.added"`

    - `"reaction.removed"`

    - `"participant.added"`

    - `"participant.removed"`

    - `"chat.created"`

    - `"chat.group_name_updated"`

    - `"chat.group_icon_updated"`

    - `"chat.group_name_update_failed"`

    - `"chat.group_icon_update_failed"`

    - `"chat.typing_indicator.started"`

    - `"chat.typing_indicator.stopped"`

    - `"phone_number.status_updated"`

    - `"call.initiated"`

    - `"call.ringing"`

    - `"call.answered"`

    - `"call.ended"`

    - `"call.failed"`

    - `"call.declined"`

    - `"call.no_answer"`

  - `partner_id: string`

    Partner identifier. Present on all webhooks for cross-referencing.

  - `trace_id: string`

    Trace ID for debugging and correlation across systems.

  - `webhook_version: string`

    Date-based webhook payload version.
    Determined by the `?version=` query parameter in your webhook subscription URL.
    If no version parameter is specified, defaults based on subscription creation date.

### Events Webhook Event

- `EventsWebhookEvent = MessageSentWebhookEvent | MessageReceivedWebhookEvent | MessageReadWebhookEvent | 15 more`

  Complete webhook payload for message.sent events (2026-02-03 format)

  - `MessageSentWebhookEvent`

    Complete webhook payload for message.sent events (2026-02-03 format)

    - `api_version: string`

      API version for the webhook payload format

    - `created_at: string`

      When the event was created

    - `data: MessageEventV2`

      Unified payload for message webhooks when using `webhook_version: "2026-02-03"`.

      This schema is used for message.sent, message.received, message.delivered, and message.read
      events when the subscription URL includes `?version=2026-02-03`.

      Key differences from V1 (2025-01-01):

      - `direction`: "inbound" or "outbound" instead of `is_from_me` boolean
      - `sender_handle`: Full handle object for the sender
      - `chat`: Nested object with `id`, `is_group`, and `owner_handle`
      - Message fields (`id`, `parts`, `effect`, etc.) are at the top level, not nested in `message`

      Timestamps indicate the message state:

      - `message.sent`: sent_at set, delivered_at=null, read_at=null
      - `message.received`: sent_at set, delivered_at=null, read_at=null
      - `message.delivered`: sent_at set, delivered_at set, read_at=null
      - `message.read`: sent_at set, delivered_at set, read_at set

      - `id: string`

        Message identifier

      - `chat: Chat`

        Chat information

        - `id: string`

          Chat identifier

        - `health_status: HealthStatus`

          **[BETA]** Current health for a chat. Always present — chats start at `HEALTHY` and may shift based on engagement and delivery signals on the conversation. Many `AT_RISK` or `CRITICAL` chats on a single line increase the risk of line flagging.

          Switch on `status` to gate sends or surface line health in your UI — the enum is the long-term contract. Each status carries a `doc_url` that deep-links to the relevant section of the Chat Health guide.

          See the [Chat Health guide](/guides/chats/chat-health) for what each status means and how to react.

          - `doc_url: string`

            Deep-link to the relevant section of the Chat Health guide for this status.

          - `status: "HEALTHY" | "AT_RISK" | "CRITICAL" | "OPTED_OUT"`

            Current health bucket for the chat. See the [Chat Health guide](/guides/chats/chat-health) for what each value means and how to react. `doc_url` deep-links to the relevant section.

            - `"HEALTHY"`

            - `"AT_RISK"`

            - `"CRITICAL"`

            - `"OPTED_OUT"`

          - `updated_at: string`

            When this status last changed.

        - `is_group?: boolean | null`

          Whether this is a group chat

        - `owner_handle?: ChatHandle | null`

          Your phone number's handle. Always has is_me=true.

          - `id: string`

            Unique identifier for this handle

          - `handle: string`

            Phone number (E.164) or email address of the participant

          - `joined_at: string`

            When this participant joined the chat

          - `service: ServiceType`

            Messaging service type

            - `"iMessage"`

            - `"SMS"`

            - `"RCS"`

          - `is_me?: boolean | null`

            Whether this handle belongs to the sender (your phone number)

          - `left_at?: string | null`

            When they left (if applicable)

          - `status?: "active" | "left" | "removed" | null`

            Participant status

            - `"active"`

            - `"left"`

            - `"removed"`

      - `direction: "inbound" | "outbound"`

        Message direction - "outbound" if sent by you, "inbound" if received

        - `"inbound"`

        - `"outbound"`

      - `parts: Array<SchemasTextPartResponse | SchemasMediaPartResponse | SchemasLinkPartResponse>`

        Message parts (text and/or media)

        - `SchemasTextPartResponse`

          A text message part

          - `type: "text"`

            Indicates this is a text message part

            - `"text"`

          - `value: string`

            The text content

          - `text_decorations?: Array<TextDecoration> | null`

            Text decorations applied to character ranges in the value

            - `range: Array<number>`

              Character range `[start, end)` in the `value` string where the decoration applies.
              `start` is inclusive, `end` is exclusive.
              *Characters are measured as UTF-16 code units. Most characters count as 1; some emoji count as 2.*

            - `animation?: "big" | "small" | "shake" | 5 more`

              Animated text effect to apply. Mutually exclusive with `style`.

              - `"big"`

              - `"small"`

              - `"shake"`

              - `"nod"`

              - `"explode"`

              - `"ripple"`

              - `"bloom"`

              - `"jitter"`

            - `style?: "bold" | "italic" | "strikethrough" | "underline"`

              Text style to apply. Mutually exclusive with `animation`.

              - `"bold"`

              - `"italic"`

              - `"strikethrough"`

              - `"underline"`

        - `SchemasMediaPartResponse`

          A media attachment part

          - `id: string`

            Unique attachment identifier

          - `filename: string`

            Original filename

          - `mime_type: string`

            MIME type of the file

          - `size_bytes: number`

            File size in bytes

          - `type: "media"`

            Indicates this is a media attachment part

            - `"media"`

          - `url: string`

            Presigned URL for downloading the attachment (expires in 1 hour).

        - `SchemasLinkPartResponse`

          A rich link preview part

          - `type: "link"`

            Indicates this is a rich link preview part

            - `"link"`

          - `value: string`

            The URL

      - `sender_handle: ChatHandle`

        The handle that sent this message

      - `service: ServiceType`

        Messaging service type

      - `delivered_at?: string | null`

        When the message was delivered. Null if not yet delivered.

      - `effect?: SchemasMessageEffect | null`

        iMessage effect applied to a message (screen or bubble animation)

        - `name?: string`

          Effect name (confetti, fireworks, slam, gentle, etc.)

        - `type?: "screen" | "bubble"`

          Effect category

          - `"screen"`

          - `"bubble"`

      - `idempotency_key?: string | null`

        Idempotency key for deduplication of outbound messages.

      - `preferred_service?: "iMessage" | "SMS" | "RCS" | "auto" | null`

        Preferred messaging service type. Includes "auto" for default fallback behavior.

        - `"iMessage"`

        - `"SMS"`

        - `"RCS"`

        - `"auto"`

      - `read_at?: string | null`

        When the message was read. Null if not yet read.

      - `reply_to?: ReplyTo | null`

        Reference to the message this is replying to (for threaded replies)

        - `message_id?: string`

          ID of the message being replied to

        - `part_index?: number`

          Index of the part being replied to

      - `sent_at?: string | null`

        When the message was sent. Null if not yet sent.

    - `event_id: string`

      Unique identifier for this event (for deduplication)

    - `event_type: WebhookEventType`

      Valid webhook event types that can be subscribed to.

      **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
      Subscribing to this event on a v2025 subscription will not produce any deliveries.

      - `"message.sent"`

      - `"message.received"`

      - `"message.read"`

      - `"message.delivered"`

      - `"message.failed"`

      - `"message.edited"`

      - `"reaction.added"`

      - `"reaction.removed"`

      - `"participant.added"`

      - `"participant.removed"`

      - `"chat.created"`

      - `"chat.group_name_updated"`

      - `"chat.group_icon_updated"`

      - `"chat.group_name_update_failed"`

      - `"chat.group_icon_update_failed"`

      - `"chat.typing_indicator.started"`

      - `"chat.typing_indicator.stopped"`

      - `"phone_number.status_updated"`

      - `"call.initiated"`

      - `"call.ringing"`

      - `"call.answered"`

      - `"call.ended"`

      - `"call.failed"`

      - `"call.declined"`

      - `"call.no_answer"`

    - `partner_id: string`

      Partner identifier. Present on all webhooks for cross-referencing.

    - `trace_id: string`

      Trace ID for debugging and correlation across systems.

    - `webhook_version: string`

      Date-based webhook payload version.
      Determined by the `?version=` query parameter in your webhook subscription URL.
      If no version parameter is specified, defaults based on subscription creation date.

  - `MessageReceivedWebhookEvent`

    Complete webhook payload for message.received events (2026-02-03 format)

    - `api_version: string`

      API version for the webhook payload format

    - `created_at: string`

      When the event was created

    - `data: MessageEventV2`

      Unified payload for message webhooks when using `webhook_version: "2026-02-03"`.

      This schema is used for message.sent, message.received, message.delivered, and message.read
      events when the subscription URL includes `?version=2026-02-03`.

      Key differences from V1 (2025-01-01):

      - `direction`: "inbound" or "outbound" instead of `is_from_me` boolean
      - `sender_handle`: Full handle object for the sender
      - `chat`: Nested object with `id`, `is_group`, and `owner_handle`
      - Message fields (`id`, `parts`, `effect`, etc.) are at the top level, not nested in `message`

      Timestamps indicate the message state:

      - `message.sent`: sent_at set, delivered_at=null, read_at=null
      - `message.received`: sent_at set, delivered_at=null, read_at=null
      - `message.delivered`: sent_at set, delivered_at set, read_at=null
      - `message.read`: sent_at set, delivered_at set, read_at set

    - `event_id: string`

      Unique identifier for this event (for deduplication)

    - `event_type: WebhookEventType`

      Valid webhook event types that can be subscribed to.

      **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
      Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `partner_id: string`

      Partner identifier. Present on all webhooks for cross-referencing.

    - `trace_id: string`

      Trace ID for debugging and correlation across systems.

    - `webhook_version: string`

      Date-based webhook payload version.
      Determined by the `?version=` query parameter in your webhook subscription URL.
      If no version parameter is specified, defaults based on subscription creation date.

  - `MessageReadWebhookEvent`

    Complete webhook payload for message.read events (2026-02-03 format)

    - `api_version: string`

      API version for the webhook payload format

    - `created_at: string`

      When the event was created

    - `data: MessageEventV2`

      Unified payload for message webhooks when using `webhook_version: "2026-02-03"`.

      This schema is used for message.sent, message.received, message.delivered, and message.read
      events when the subscription URL includes `?version=2026-02-03`.

      Key differences from V1 (2025-01-01):

      - `direction`: "inbound" or "outbound" instead of `is_from_me` boolean
      - `sender_handle`: Full handle object for the sender
      - `chat`: Nested object with `id`, `is_group`, and `owner_handle`
      - Message fields (`id`, `parts`, `effect`, etc.) are at the top level, not nested in `message`

      Timestamps indicate the message state:

      - `message.sent`: sent_at set, delivered_at=null, read_at=null
      - `message.received`: sent_at set, delivered_at=null, read_at=null
      - `message.delivered`: sent_at set, delivered_at set, read_at=null
      - `message.read`: sent_at set, delivered_at set, read_at set

    - `event_id: string`

      Unique identifier for this event (for deduplication)

    - `event_type: WebhookEventType`

      Valid webhook event types that can be subscribed to.

      **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
      Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `partner_id: string`

      Partner identifier. Present on all webhooks for cross-referencing.

    - `trace_id: string`

      Trace ID for debugging and correlation across systems.

    - `webhook_version: string`

      Date-based webhook payload version.
      Determined by the `?version=` query parameter in your webhook subscription URL.
      If no version parameter is specified, defaults based on subscription creation date.

  - `MessageDeliveredWebhookEvent`

    Complete webhook payload for message.delivered events (2026-02-03 format)

    - `api_version: string`

      API version for the webhook payload format

    - `created_at: string`

      When the event was created

    - `data: MessageEventV2`

      Unified payload for message webhooks when using `webhook_version: "2026-02-03"`.

      This schema is used for message.sent, message.received, message.delivered, and message.read
      events when the subscription URL includes `?version=2026-02-03`.

      Key differences from V1 (2025-01-01):

      - `direction`: "inbound" or "outbound" instead of `is_from_me` boolean
      - `sender_handle`: Full handle object for the sender
      - `chat`: Nested object with `id`, `is_group`, and `owner_handle`
      - Message fields (`id`, `parts`, `effect`, etc.) are at the top level, not nested in `message`

      Timestamps indicate the message state:

      - `message.sent`: sent_at set, delivered_at=null, read_at=null
      - `message.received`: sent_at set, delivered_at=null, read_at=null
      - `message.delivered`: sent_at set, delivered_at set, read_at=null
      - `message.read`: sent_at set, delivered_at set, read_at set

    - `event_id: string`

      Unique identifier for this event (for deduplication)

    - `event_type: WebhookEventType`

      Valid webhook event types that can be subscribed to.

      **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
      Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `partner_id: string`

      Partner identifier. Present on all webhooks for cross-referencing.

    - `trace_id: string`

      Trace ID for debugging and correlation across systems.

    - `webhook_version: string`

      Date-based webhook payload version.
      Determined by the `?version=` query parameter in your webhook subscription URL.
      If no version parameter is specified, defaults based on subscription creation date.

  - `MessageFailedWebhookEvent`

    Complete webhook payload for message.failed events

    - `api_version: string`

      API version for the webhook payload format

    - `created_at: string`

      When the event was created

    - `data: Data`

      Error details for message.failed webhook events.
      See [WebhookErrorCode](#/components/schemas/WebhookErrorCode) for the full error code reference.

      - `code: number`

        Error codes in webhook failure events (3007, 4001).

      - `failed_at: string`

        When the failure was detected

      - `chat_id?: string`

        Chat identifier (UUID)

      - `message_id?: string`

        Message identifier (UUID)

      - `reason?: string`

        Human-readable description of the failure

    - `event_id: string`

      Unique identifier for this event (for deduplication)

    - `event_type: WebhookEventType`

      Valid webhook event types that can be subscribed to.

      **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
      Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `partner_id: string`

      Partner identifier. Present on all webhooks for cross-referencing.

    - `trace_id: string`

      Trace ID for debugging and correlation across systems.

    - `webhook_version: string`

      Date-based webhook payload version.
      Determined by the `?version=` query parameter in your webhook subscription URL.
      If no version parameter is specified, defaults based on subscription creation date.

  - `MessageEditedWebhookEvent`

    Complete webhook payload for message.edited events (2026-02-03 format only)

    - `api_version: string`

      API version for the webhook payload format

    - `created_at: string`

      When the event was created

    - `data: Data`

      Payload for `message.edited` events (2026-02-03 format).

      Describes which part of a message was edited and when. Only text parts can be edited.
      Only available for subscriptions using `webhook_version: "2026-02-03"`.

      - `id: string`

        Message identifier

      - `chat: Chat`

        Chat context

        - `id: string`

          Chat identifier

        - `health_status: HealthStatus`

          **[BETA]** Current health for a chat. Always present — chats start at `HEALTHY` and may shift based on engagement and delivery signals on the conversation. Many `AT_RISK` or `CRITICAL` chats on a single line increase the risk of line flagging.

          Switch on `status` to gate sends or surface line health in your UI — the enum is the long-term contract. Each status carries a `doc_url` that deep-links to the relevant section of the Chat Health guide.

          See the [Chat Health guide](/guides/chats/chat-health) for what each status means and how to react.

          - `doc_url: string`

            Deep-link to the relevant section of the Chat Health guide for this status.

          - `status: "HEALTHY" | "AT_RISK" | "CRITICAL" | "OPTED_OUT"`

            Current health bucket for the chat. See the [Chat Health guide](/guides/chats/chat-health) for what each value means and how to react. `doc_url` deep-links to the relevant section.

            - `"HEALTHY"`

            - `"AT_RISK"`

            - `"CRITICAL"`

            - `"OPTED_OUT"`

          - `updated_at: string`

            When this status last changed.

        - `is_group: boolean`

          Whether this is a group chat

        - `owner_handle: ChatHandle`

          The handle that owns this chat (your phone number)

      - `direction: "outbound" | "inbound"`

        "outbound" if you sent the original message, "inbound" if you received it

        - `"outbound"`

        - `"inbound"`

      - `edited_at: string`

        When the edit occurred

      - `part: Part`

        The edited part

        - `index: number`

          Zero-based index of the edited part within the message

        - `text: string`

          New text content of the part

      - `sender_handle: ChatHandle`

        The handle that sent (and edited) this message

    - `event_id: string`

      Unique identifier for this event (for deduplication)

    - `event_type: WebhookEventType`

      Valid webhook event types that can be subscribed to.

      **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
      Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `partner_id: string`

      Partner identifier. Present on all webhooks for cross-referencing.

    - `trace_id: string`

      Trace ID for debugging and correlation across systems.

    - `webhook_version: string`

      Date-based webhook payload version.
      Determined by the `?version=` query parameter in your webhook subscription URL.
      If no version parameter is specified, defaults based on subscription creation date.

  - `ReactionAddedWebhookEvent`

    Complete webhook payload for reaction.added events

    - `api_version: string`

      API version for the webhook payload format

    - `created_at: string`

      When the event was created

    - `data: ReactionEventBase`

      Payload for reaction.added webhook events

      - `is_from_me: boolean`

        Whether this reaction was from the owner of the phone number (true) or from someone else (false)

      - `reaction_type: ReactionType`

        Type of reaction. Standard iMessage tapbacks are love, like, dislike, laugh, emphasize, question.
        Custom emoji reactions have type "custom" with the actual emoji in the custom_emoji field.
        Sticker reactions have type "sticker" with sticker attachment details in the sticker field.

        - `"love"`

        - `"like"`

        - `"dislike"`

        - `"laugh"`

        - `"emphasize"`

        - `"question"`

        - `"custom"`

        - `"sticker"`

      - `chat_id?: string`

        Chat identifier (UUID)

      - `custom_emoji?: string | null`

        The actual emoji when reaction_type is "custom". Null for standard tapbacks.

      - `from?: string`

        DEPRECATED: Use from_handle instead. Phone number or email address of the person who added/removed the reaction.

      - `from_handle?: ChatHandle`

        The person who added/removed the reaction as a full handle object

      - `message_id?: string`

        Message identifier (UUID) that the reaction was added to or removed from

      - `part_index?: number`

        Index of the message part that was reacted to (0-based)

      - `reacted_at?: string`

        When the reaction was added or removed

      - `service?: ServiceType`

        Messaging service type

      - `sticker?: Sticker | null`

        Sticker attachment details when reaction_type is "sticker". Null for non-sticker reactions.

        - `file_name?: string`

          Filename of the sticker

        - `height?: number`

          Sticker image height in pixels

        - `mime_type?: string`

          MIME type of the sticker image

        - `url?: string`

          Presigned URL for downloading the sticker image (expires in 1 hour).

        - `width?: number`

          Sticker image width in pixels

    - `event_id: string`

      Unique identifier for this event (for deduplication)

    - `event_type: WebhookEventType`

      Valid webhook event types that can be subscribed to.

      **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
      Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `partner_id: string`

      Partner identifier. Present on all webhooks for cross-referencing.

    - `trace_id: string`

      Trace ID for debugging and correlation across systems.

    - `webhook_version: string`

      Date-based webhook payload version.
      Determined by the `?version=` query parameter in your webhook subscription URL.
      If no version parameter is specified, defaults based on subscription creation date.

  - `ReactionRemovedWebhookEvent`

    Complete webhook payload for reaction.removed events

    - `api_version: string`

      API version for the webhook payload format

    - `created_at: string`

      When the event was created

    - `data: ReactionEventBase`

      Payload for reaction.removed webhook events

    - `event_id: string`

      Unique identifier for this event (for deduplication)

    - `event_type: WebhookEventType`

      Valid webhook event types that can be subscribed to.

      **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
      Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `partner_id: string`

      Partner identifier. Present on all webhooks for cross-referencing.

    - `trace_id: string`

      Trace ID for debugging and correlation across systems.

    - `webhook_version: string`

      Date-based webhook payload version.
      Determined by the `?version=` query parameter in your webhook subscription URL.
      If no version parameter is specified, defaults based on subscription creation date.

  - `ParticipantAddedWebhookEvent`

    Complete webhook payload for participant.added events

    - `api_version: string`

      API version for the webhook payload format

    - `created_at: string`

      When the event was created

    - `data: Data`

      Payload for participant.added webhook events

      - `handle: string`

        DEPRECATED: Use participant instead. Handle (phone number or email address) of the added participant.

      - `added_at?: string`

        When the participant was added

      - `chat_id?: string`

        Chat identifier (UUID) of the group chat

      - `participant?: ChatHandle`

        The added participant as a full handle object

    - `event_id: string`

      Unique identifier for this event (for deduplication)

    - `event_type: WebhookEventType`

      Valid webhook event types that can be subscribed to.

      **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
      Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `partner_id: string`

      Partner identifier. Present on all webhooks for cross-referencing.

    - `trace_id: string`

      Trace ID for debugging and correlation across systems.

    - `webhook_version: string`

      Date-based webhook payload version.
      Determined by the `?version=` query parameter in your webhook subscription URL.
      If no version parameter is specified, defaults based on subscription creation date.

  - `ParticipantRemovedWebhookEvent`

    Complete webhook payload for participant.removed events

    - `api_version: string`

      API version for the webhook payload format

    - `created_at: string`

      When the event was created

    - `data: Data`

      Payload for participant.removed webhook events

      - `handle: string`

        DEPRECATED: Use participant instead. Handle (phone number or email address) of the removed participant.

      - `chat_id?: string`

        Chat identifier (UUID) of the group chat

      - `participant?: ChatHandle`

        The removed participant as a full handle object

      - `removed_at?: string`

        When the participant was removed

    - `event_id: string`

      Unique identifier for this event (for deduplication)

    - `event_type: WebhookEventType`

      Valid webhook event types that can be subscribed to.

      **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
      Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `partner_id: string`

      Partner identifier. Present on all webhooks for cross-referencing.

    - `trace_id: string`

      Trace ID for debugging and correlation across systems.

    - `webhook_version: string`

      Date-based webhook payload version.
      Determined by the `?version=` query parameter in your webhook subscription URL.
      If no version parameter is specified, defaults based on subscription creation date.

  - `ChatCreatedWebhookEvent`

    Complete webhook payload for chat.created events

    - `api_version: string`

      API version for the webhook payload format

    - `created_at: string`

      When the event was created

    - `data: Data`

      Payload for chat.created webhook events. Matches GET /v3/chats/{chatId} response.

      - `id: string`

        Unique identifier for the chat

      - `created_at: string`

        When the chat was created

      - `display_name: string | null`

        Display name for the chat. Defaults to a comma-separated list of recipient handles. Can be updated for group chats.

      - `handles: Array<ChatHandle>`

        List of chat participants with full handle details. Always contains at least two handles (your phone number and the other participant).

        - `id: string`

          Unique identifier for this handle

        - `handle: string`

          Phone number (E.164) or email address of the participant

        - `joined_at: string`

          When this participant joined the chat

        - `service: ServiceType`

          Messaging service type

        - `is_me?: boolean | null`

          Whether this handle belongs to the sender (your phone number)

        - `left_at?: string | null`

          When they left (if applicable)

        - `status?: "active" | "left" | "removed" | null`

          Participant status

      - `health_status: HealthStatus`

        **[BETA]** Current health for a chat. Always present — chats start at `HEALTHY` and may shift based on engagement and delivery signals on the conversation. Many `AT_RISK` or `CRITICAL` chats on a single line increase the risk of line flagging.

        Switch on `status` to gate sends or surface line health in your UI — the enum is the long-term contract. Each status carries a `doc_url` that deep-links to the relevant section of the Chat Health guide.

        See the [Chat Health guide](/guides/chats/chat-health) for what each status means and how to react.

        - `doc_url: string`

          Deep-link to the relevant section of the Chat Health guide for this status.

        - `status: "HEALTHY" | "AT_RISK" | "CRITICAL" | "OPTED_OUT"`

          Current health bucket for the chat. See the [Chat Health guide](/guides/chats/chat-health) for what each value means and how to react. `doc_url` deep-links to the relevant section.

          - `"HEALTHY"`

          - `"AT_RISK"`

          - `"CRITICAL"`

          - `"OPTED_OUT"`

        - `updated_at: string`

          When this status last changed.

      - `is_group: boolean`

        Whether this is a group chat

      - `updated_at: string`

        When the chat was last updated

      - `service?: ServiceType | null`

        Messaging service type

    - `event_id: string`

      Unique identifier for this event (for deduplication)

    - `event_type: WebhookEventType`

      Valid webhook event types that can be subscribed to.

      **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
      Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `partner_id: string`

      Partner identifier. Present on all webhooks for cross-referencing.

    - `trace_id: string`

      Trace ID for debugging and correlation across systems.

    - `webhook_version: string`

      Date-based webhook payload version.
      Determined by the `?version=` query parameter in your webhook subscription URL.
      If no version parameter is specified, defaults based on subscription creation date.

  - `ChatGroupNameUpdatedWebhookEvent`

    Complete webhook payload for chat.group_name_updated events

    - `api_version: string`

      API version for the webhook payload format

    - `created_at: string`

      When the event was created

    - `data: Data`

      Payload for chat.group_name_updated webhook events

      - `chat_id: string`

        Chat identifier (UUID) of the group chat

      - `updated_at: string`

        When the update occurred

      - `changed_by_handle?: ChatHandle | null`

        The handle who made the change.

      - `new_value?: string | null`

        New group name (null if the name was removed)

      - `old_value?: string | null`

        Previous group name (null if no previous name)

    - `event_id: string`

      Unique identifier for this event (for deduplication)

    - `event_type: WebhookEventType`

      Valid webhook event types that can be subscribed to.

      **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
      Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `partner_id: string`

      Partner identifier. Present on all webhooks for cross-referencing.

    - `trace_id: string`

      Trace ID for debugging and correlation across systems.

    - `webhook_version: string`

      Date-based webhook payload version.
      Determined by the `?version=` query parameter in your webhook subscription URL.
      If no version parameter is specified, defaults based on subscription creation date.

  - `ChatGroupIconUpdatedWebhookEvent`

    Complete webhook payload for chat.group_icon_updated events

    - `api_version: string`

      API version for the webhook payload format

    - `created_at: string`

      When the event was created

    - `data: Data`

      Payload for chat.group_icon_updated webhook events

      - `chat_id: string`

        Chat identifier (UUID) of the group chat

      - `updated_at: string`

        When the update occurred

      - `changed_by_handle?: ChatHandle | null`

        The handle who made the change.

      - `new_value?: string | null`

        New icon URL (null if the icon was removed)

      - `old_value?: string | null`

        Previous icon URL (null if no previous icon)

    - `event_id: string`

      Unique identifier for this event (for deduplication)

    - `event_type: WebhookEventType`

      Valid webhook event types that can be subscribed to.

      **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
      Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `partner_id: string`

      Partner identifier. Present on all webhooks for cross-referencing.

    - `trace_id: string`

      Trace ID for debugging and correlation across systems.

    - `webhook_version: string`

      Date-based webhook payload version.
      Determined by the `?version=` query parameter in your webhook subscription URL.
      If no version parameter is specified, defaults based on subscription creation date.

  - `ChatGroupNameUpdateFailedWebhookEvent`

    Complete webhook payload for chat.group_name_update_failed events

    - `api_version: string`

      API version for the webhook payload format

    - `created_at: string`

      When the event was created

    - `data: Data`

      Error details for chat.group_name_update_failed webhook events.
      See [WebhookErrorCode](#/components/schemas/WebhookErrorCode) for the full error code reference.

      - `chat_id: string`

        Chat identifier (UUID) of the group chat

      - `error_code: number`

        Error codes in webhook failure events (3007, 4001).

      - `failed_at: string`

        When the failure was detected

    - `event_id: string`

      Unique identifier for this event (for deduplication)

    - `event_type: WebhookEventType`

      Valid webhook event types that can be subscribed to.

      **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
      Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `partner_id: string`

      Partner identifier. Present on all webhooks for cross-referencing.

    - `trace_id: string`

      Trace ID for debugging and correlation across systems.

    - `webhook_version: string`

      Date-based webhook payload version.
      Determined by the `?version=` query parameter in your webhook subscription URL.
      If no version parameter is specified, defaults based on subscription creation date.

  - `ChatGroupIconUpdateFailedWebhookEvent`

    Complete webhook payload for chat.group_icon_update_failed events

    - `api_version: string`

      API version for the webhook payload format

    - `created_at: string`

      When the event was created

    - `data: Data`

      Error details for chat.group_icon_update_failed webhook events.
      See [WebhookErrorCode](#/components/schemas/WebhookErrorCode) for the full error code reference.

      - `chat_id: string`

        Chat identifier (UUID) of the group chat

      - `error_code: number`

        Error codes in webhook failure events (3007, 4001).

      - `failed_at: string`

        When the failure was detected

    - `event_id: string`

      Unique identifier for this event (for deduplication)

    - `event_type: WebhookEventType`

      Valid webhook event types that can be subscribed to.

      **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
      Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `partner_id: string`

      Partner identifier. Present on all webhooks for cross-referencing.

    - `trace_id: string`

      Trace ID for debugging and correlation across systems.

    - `webhook_version: string`

      Date-based webhook payload version.
      Determined by the `?version=` query parameter in your webhook subscription URL.
      If no version parameter is specified, defaults based on subscription creation date.

  - `ChatTypingIndicatorStartedWebhookEvent`

    Complete webhook payload for chat.typing_indicator.started events

    - `api_version: string`

      API version for the webhook payload format

    - `created_at: string`

      When the event was created

    - `data: Data`

      Payload for chat.typing_indicator.started webhook events

      - `chat_id: string`

        Chat identifier

    - `event_id: string`

      Unique identifier for this event (for deduplication)

    - `event_type: WebhookEventType`

      Valid webhook event types that can be subscribed to.

      **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
      Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `partner_id: string`

      Partner identifier. Present on all webhooks for cross-referencing.

    - `trace_id: string`

      Trace ID for debugging and correlation across systems.

    - `webhook_version: string`

      Date-based webhook payload version.
      Determined by the `?version=` query parameter in your webhook subscription URL.
      If no version parameter is specified, defaults based on subscription creation date.

  - `ChatTypingIndicatorStoppedWebhookEvent`

    Complete webhook payload for chat.typing_indicator.stopped events

    - `api_version: string`

      API version for the webhook payload format

    - `created_at: string`

      When the event was created

    - `data: Data`

      Payload for chat.typing_indicator.stopped webhook events

      - `chat_id: string`

        Chat identifier

    - `event_id: string`

      Unique identifier for this event (for deduplication)

    - `event_type: WebhookEventType`

      Valid webhook event types that can be subscribed to.

      **Note:** `message.edited` is only delivered to subscriptions using `webhook_version: "2026-02-03"`.
      Subscribing to this event on a v2025 subscription will not produce any deliveries.

    - `partner_id: string`

      Partner identifier. Present on all webhooks for cross-referencing.

    - `trace_id: string`

      Trace ID for debugging and correlation across systems.

    - `webhook_version: string`

      Date-based webhook payload version.
      Determined by the `?version=` query parameter in your webhook subscription URL.
      If no version parameter is specified, defaults based on subscription creation date.

  - `PhoneNumberStatusUpdatedWebhookEvent`

    Complete webhook payload for phone_number.status_updated events

    - `api_version: string`

      API version for the webhook payload format

    - `created_at: string`

      When the event was created

    - `data: Data`

      Payload for phone_number.status_updated webhook events

      - `changed_at: string`

        When the status change occurred

      - `new_health_status: "HEALTHY" | "AT_RISK" | "CRITICAL"`

        The new line health status

        - `"HEALTHY"`

        - `"AT_RISK"`

        - `"CRITICAL"`

      - `new_status: "ACTIVE" | "FLAGGED"`

        The new service status

        - `"ACTIVE"`

        - `"FLAGGED"`

      - `phone_number: string`

        Phone number in E.164 format

      - `previous_health_status: "HEALTHY" | "AT_RISK" | "CRITICAL"`

        The previous line health status

        - `"HEALTHY"`

        - `"AT_RISK"`

        - `"CRITICAL"`

      - `previous_status: "ACTIVE" | "FLAGGED"`

        The previous service status

        - `"ACTIVE"`

        - `"FLAGGED"`

    - `event_id: string`

      Unique identifier for this event (for deduplication)

    - `event_type: "message.sent" | "message.received" | "message.read" | 22 more`

      The type of event

      - `"message.sent"`

      - `"message.received"`

      - `"message.read"`

      - `"message.delivered"`

      - `"message.failed"`

      - `"message.edited"`

      - `"reaction.added"`

      - `"reaction.removed"`

      - `"participant.added"`

      - `"participant.removed"`

      - `"chat.created"`

      - `"chat.group_name_updated"`

      - `"chat.group_icon_updated"`

      - `"chat.group_name_update_failed"`

      - `"chat.group_icon_update_failed"`

      - `"chat.typing_indicator.started"`

      - `"chat.typing_indicator.stopped"`

      - `"phone_number.status_updated"`

      - `"call.initiated"`

      - `"call.ringing"`

      - `"call.answered"`

      - `"call.ended"`

      - `"call.failed"`

      - `"call.declined"`

      - `"call.no_answer"`

    - `partner_id: string`

      Partner identifier. Present on all webhooks for cross-referencing.

    - `trace_id: string`

      Trace ID for debugging and correlation across systems.

    - `webhook_version: string`

      Date-based webhook payload version.
      Determined by the `?version=` query parameter in your webhook subscription URL.
      If no version parameter is specified, defaults based on subscription creation date.
