Post Assistant Message

Send the assistant a message (RO-303): 202 at once with the stored message and the assistant's `running` one; the turn runs in the background (poll the thread). The planner may ask questions (`question`, `form`), read data with the user's permissions, or propose writes as a `confirm` card (nothing changes until it is confirmed). It never sends email, calls, approves drafts or starts campaigns. A new message expires earlier unconfirmed plans. 429 when the workspace's daily message budget (`ASSISTANT_DAILY_MESSAGES`) is used up; 409 while the previous turn is still running.

API key access

Not available to API keys or connected apps: only a signed-in person can call this route.

POST/api/v1/assistant/threads/{thread_id}/messages

Authorization

AuthorizationBearer <token>

Access token from /api/v1/auth/login, or an API key (ro_pat_..., RO-176) from /api/v1/workspaces/current/api-keys: the key implies its workspace and needs the route's scope. MCP connectors (/api/v1/mcp only) may use an OAuth access token (ro_oat_..., RO-284).

In: header

Path Parameters

thread_idstring

Formatuuid

Header Parameters

X-Workspace-Id?string | null

Id of the workspace to act on (must be a member).

Request Body

textstring

Length1 <= length <= 4000

answers?object | null

A submitted form's answers by field name (text, number, boolean or a list of up to 20 short texts; at most 20).

Empty Object

context?AssistantPageContext | null

mentions?array<AssistantMention> | null

At most 10.

attachments?array<string> | null

Ids of the user's attached files (POST /assistant/attachments), at most ASSISTANT_ATTACHMENTS_PER_MESSAGE (RO-323).

Response Body

curl -X POST "http://localhost:8000/api/v1/assistant/threads/497f6eca-6276-4993-bfeb-53cbbbba6f08/messages" \
  -H "X-Workspace-Id: string" \
  -H "Content-Type: application/json" \
  -d '{
    "text": "string"
  }'

curl -X POST "http://localhost:8000/api/v1/assistant/threads/497f6eca-6276-4993-bfeb-53cbbbba6f08/messages" \  -H "X-Workspace-Id: string" \  -H "Content-Type: application/json" \  -d '{    "text": "string"  }'

{
  "user_message": {
    "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
    "role": "user",
    "text": "string",
    "components": [
      {
        "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
        "text": "string",
        "chips": [
          "string"
        ],
        "type": "question"
      }
    ],
    "status": "done",
    "created_at": "2019-08-24T14:15:22Z",
    "usage": {},
    "feedback": {},
    "attachments": [
      {
        "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
        "filename": "string",
        "kind": "pdf",
        "byte_size": 0,
        "status": "ready"
      }
    ]
  },
  "assistant_message": {
    "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
    "role": "user",
    "text": "string",
    "components": [
      {
        "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
        "text": "string",
        "chips": [
          "string"
        ],
        "type": "question"
      }
    ],
    "status": "done",
    "created_at": "2019-08-24T14:15:22Z",
    "usage": {},
    "feedback": {},
    "attachments": [
      {
        "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
        "filename": "string",
        "kind": "pdf",
        "byte_size": 0,
        "status": "ready"
      }
    ]
  }
}

Empty

{
  "detail": [
    {
      "loc": [
        "string"
      ],
      "msg": "string",
      "type": "string",
      "input": null,
      "ctx": {}
    }
  ]
}