Create inbox message

POST/api/inbox/threads/{threadId}/messages

Appends a new message to an inbox thread.

Path Parameters

threadId*string

thread identifier.

Example"thread_123"

Request Body

application/json

Request payload for Create inbox message.

content*string

Message body to append to the thread.

Example"Can you share the updated quote?"

senderId*string

Identifier for the sender creating the message.

Example"wu_123"

[key: string]?never

Response Body

`application/json`

curl -X POST "https://loading/api/inbox/threads/thread_123/messages" \  -H "Content-Type: application/json" \  -d '{    "content": "Can you share the updated quote?",    "senderId": "wu_123"  }'

[
  {
    "id": "msg_123",
    "data": null,
    "chatId": "chat_123",
    "workspaceId": "ws_123",
    "createdAt": "2026-04-01T12:05:00.000Z",
    "updatedAt": "2026-04-01T12:05:00.000Z"
  }
]

{
  "_tag": "ApiBadRequestError",
  "code": "PRICE_IMPORT_DUPLICATE_SKUS",
  "message": "The request payload is invalid.",
  "description": "Remove duplicate SKU rows before importing the file.",
  "details": {}
}

{
  "_tag": "Unauthorized"
}

{
  "_tag": "ApiForbiddenError",
  "message": "You do not have permission to perform this action."
}

{
  "_tag": "ApiNotFoundError",
  "message": "The requested resource was not found."
}

{
  "_tag": "ApiConflictError",
  "message": "A resource with this handle already exists."
}

{
  "_tag": "ApiUnprocessableEntityError",
  "message": "The order cannot be submitted without items."
}

{
  "_tag": "ServiceUnavailable"
}

{
  "_tag": "ApiTimeoutError",
  "message": "The upstream operation timed out."
}

Create inbox message

Path Parameters

Request Body

Response Body

200application/json

400application/json

401application/json

403application/json

404application/json

409application/json

422application/json

503application/json

504application/json

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`