---
title: "Changes to Send Marketing Agent message"
method: POST
path: "/api/apps/{app_id}/cmo/messages"
---

# Changes to Send Marketing Agent message

`POST /api/apps/{app_id}/cmo/messages`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 5 of 73 revisions.

- **2026-10-21** `c23775445de2`: 3 breaking, 1 warning, 2 info
- **2026-10-19** `afddf0835104`: 2 breaking, 2 info
- **2026-10-11** `80287813ab84`: 1 info
- **2026-10-07** `dddf17e0f9f0`: 1 info
- **2026-09-30** `e2a6a9f1fe4c`: 1 info

## Changes

- **2026-10-21** `c23775445de2`: 3 breaking, 1 warning, 2 info
  - `header` request parameter `Accept-Language` list-of-types was narrowed by removing types `null`
  - `header` request parameter `Idempotency-Key` list-of-types was narrowed by removing types `null`
  - for the `header` request parameter `Idempotency-Key`, the minLength was increased from `0` to `1`
  - for the `header` request parameter `Idempotency-Key`, the maxLength was set to `100`
  - for the `header` request parameter `Accept-Language`, the type was generalized from no type to `string`
  - for the `header` request parameter `Idempotency-Key`, the type was generalized from no type to `string`
- **2026-10-19** `afddf0835104`: 2 breaking, 2 info
  - removed the required property `kpis/items/instrument/anyOf[subschema #1: KpiInstrument]/builder_prompt` from the response with the `200` status
  - removed the required property `suggestions/items/builder_prompt` from the response with the `200` status
  - added the required property `kpis/items/instrument/anyOf[subschema #1: KpiInstrument]/chat_prompt` to the response with the `200` status
  - added the required property `suggestions/items/chat_prompt` to the response with the `200` status
- **2026-10-11** `80287813ab84`: 1 info
  - the endpoint scheme security `PersonalAccessTokenAuth` was added to the API
- **2026-10-07** `dddf17e0f9f0`: 1 info
  - added the new optional `header` request parameter `Accept-Language`
- **2026-09-30** `e2a6a9f1fe4c`: 1 info
  - endpoint added

---

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