> ## Documentation Index
> Fetch the complete documentation index at: https://docs.chatgrid.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Update Chat

> Updates a chat thread's title or node association.

At least one field must be provided.

<RequestExample>
  ```bash cURL theme={null}
  curl -X PATCH "https://api.chatgrid.ai/v1/boards/a1b2c3d4-e5f6-7890-abcd-ef1234567890/chats/b2c3d4e5-f6a7-8901-bcde-f12345678901" \
    -H "Authorization: Bearer cgk_live_a1b2c3d4e5f6g7h8i9j0k1l2m3n4o5p6" \
    -H "Content-Type: application/json" \
    -d '{"title": "Marketing brainstorm (final)"}'
  ```
</RequestExample>

<ResponseExample>
  ```json 200 theme={null}
  {
    "object": "chat",
    "data": {
      "id": "b2c3d4e5-f6a7-8901-bcde-f12345678901",
      "title": "Marketing brainstorm (final)",
      "node_id": "c3d4e5f6-a7b8-9012-cdef-123456789012",
      "created_at": "2026-03-15T10:30:00.000Z",
      "updated_at": "2026-03-15T14:00:00.000Z",
      "last_message_at": "2026-03-15T12:50:00.000Z"
    }
  }
  ```
</ResponseExample>