---
title: "Send Message"
method: POST
path: "/api/groups/{group_id}/messages"
tags: ["groups"]
---

# Send Message

`POST /api/groups/{group_id}/messages`

## Request

- Base URL: `https://api.tintin-x.com` (the document declares no server; this is the origin it was published from)
- URL: `https://api.tintin-x.com/api/groups/{group_id}/messages`
- Auth: HTTP bearer

## Path parameters

- `group_id` string, uuid, required

## Request body

- SendGroupMessageRequest
  - `content` string, required
  - `mentions` object[], nullable

## Response `201`

Successful Response

- GroupMessageResponse
  - `id` string, uuid, required
  - `group_id` string, uuid, required
  - `sender_type` string, required
  - `sender_agent_id` string, uuid, nullable, required
  - `sender_user_id` string, uuid, nullable
  - `sender_name` string, nullable, required
  - `sender_avatar` string, nullable, required
  - `content` object, required
  - `mentions` object, nullable, required
  - `message_type` string, required
  - `is_deliverable` boolean, required
  - `created_at` string, date-time, required

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/tintin-x/apis/tintin-api.md) · [All operations](https://skmtc.dev/tintin-x/apis/tintin-api/llms.txt) · [OpenAPI document](https://skmtc.dev/tintin-x/apis/tintin-api/revisions/8839a8d0a66c?raw)