---
title: "Changes to Send chat message"
method: POST
path: "/api/apps/{app_id}/chat/message"
---

# Changes to Send chat message

`POST /api/apps/{app_id}/chat/message`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 8 of 87 revisions.

- **2026-10-21** `c23775445de2`: 2 breaking, 2 info
- **2026-10-21** `721c47176351`: 1 info
- **2026-10-20** `bbcd7d7e2e72`: 1 info
- **2026-10-11** `80287813ab84`: 1 info
- **2026-10-10** `fc604cdcc3a2`: 3 info
- **2026-09-02** `56dc45634956`: 1 info
- **2026-08-30** `394136a6cdd4`: 1 breaking
- **2026-08-24** `a58b38664ce9`: 1 info

## Changes

- **2026-10-21** `c23775445de2`: 2 breaking, 2 info
  - `header` request parameter `Idempotency-Key` list-of-types was narrowed by removing types `null`
  - `query` request parameter `branch_id` list-of-types was narrowed by removing types `null`
  - for the `header` request parameter `Idempotency-Key`, the type was generalized from no type to `string`
  - for the `query` request parameter `branch_id`, the type was generalized from no type to `string`
- **2026-10-21** `721c47176351`: 1 info
  - added the new optional `query` request parameter `branch_id`
- **2026-10-20** `bbcd7d7e2e72`: 1 info
  - added the new optional `header` request parameter `Idempotency-Key`
- **2026-10-11** `80287813ab84`: 1 info
  - the endpoint scheme security `PersonalAccessTokenAuth` was added to the API
- **2026-10-10** `fc604cdcc3a2`: 3 info
  - request property `file_urls` list-of-types was widened by adding types `null` to media type `application/json`
  - added `#/components/schemas/StatusObject` to the `status` response property `anyOf` list for the response status `200`
  - removed `#/components/schemas/AppStatusResponse` from the `status` response property `anyOf` list for the response status `200`
- **2026-09-02** `56dc45634956`: 1 info
  - added the optional property `conversation/anyOf[subschema #1: ChatTurnConversation]/messages/anyOf[subschema #1]/items/tool_calls/anyOf[subschema #1]/items/arguments_string` to the response with the `200` status
- **2026-08-30** `394136a6cdd4`: 1 breaking
  - removed the media type `application/json` for the response with the status `422`
- **2026-08-24** `a58b38664ce9`: 1 info
  - endpoint added

---

[Operation](https://skmtc.dev/idealspot/apis/base44-app-management-api/docs/api/apps/:app_id/chat/message/post.md) - [API](https://skmtc.dev/idealspot/apis/base44-app-management-api.md) - [Page](https://skmtc.dev/idealspot/apis/base44-app-management-api/changes/api/apps/:app_id/chat/message/post)