---
title: "Find or create the group's chat room so the app can open it. 403 NOT_IN_GROUP_CHAT when you aren't a member of the group; nobody is added."
method: POST
path: "/api/coach/groups/{groupId}/chat-room"
tags: ["Coach — Group overview"]
---

# Find or create the group's chat room so the app can open it. 403 NOT_IN_GROUP_CHAT when you aren't a member of the group; nobody is added.

`POST /api/coach/groups/{groupId}/chat-room`

## Request

- Base URL: `https://api.rewritelifestyle.ai` (the document declares no server; this is the origin it was published from)
- URL: `https://api.rewritelifestyle.ai/api/coach/groups/{groupId}/chat-room`
- Auth: HTTP bearer

## Path parameters

- `groupId` number, required

## Response `201`

## Changes

- **2026-10-19** `0c72870a5acb`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/rewritelifestyle/apis/rewrite-lifestyle-api/changes/api/coach/groups/:groupId/chat-room/post.md)

---

[API](https://skmtc.dev/rewritelifestyle/apis/rewrite-lifestyle-api.md) - [All operations](https://skmtc.dev/rewritelifestyle/apis/rewrite-lifestyle-api/llms.txt) - [OpenAPI document](https://skmtc.dev/rewritelifestyle/apis/rewrite-lifestyle-api/revisions/28695827f27a?raw)