---
title: "Changes to Send message"
method: POST
path: "/session/{sessionID}/message"
---

# Changes to Send message

`POST /session/{sessionID}/message`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 12 of 102 revisions.

- **2026-08-06** `4e11f1aed2fd` — 2 info
- **2026-06-29** `e7837fb0de8f` — 1 info
- **2026-04-29** `ba1ceff8b2ff` — 1 info
- **2026-04-29** `3e3822f627bd` — 1 warning
- **2026-04-29** `ba1ceff8b2ff` — 1 info
- **2026-04-28** `3e3822f627bd` — 1 warning
- **2026-04-28** `ba1ceff8b2ff` — 1 info
- **2026-02-12** `7eb1c31fb938` — 3 info
- **2026-02-11** `8f23f1074f57` — 2 info
- **2026-02-09** `3e70f65f33fa` — 1 info
- **2026-02-06** `73bbed0ce3ce` — 1 info
- **2026-01-20** `c7ae6a68e4fb` — 7 warning, 1 info

## Changes

- **2026-08-06** `4e11f1aed2fd` — 2 info
  - added the optional property `info/stuckAborted` to the response with the `200` status
  - added the optional property `info/stuckNudged` to the response with the `200` status
- **2026-06-29** `e7837fb0de8f` — 1 info
  - added the optional property `info/stepCapped` to the response with the `200` status
- **2026-04-29** `ba1ceff8b2ff` — 1 info
  - added the new optional request property `excludeHistory`
- **2026-04-29** `3e3822f627bd` — 1 warning
  - removed the request property `excludeHistory`
- **2026-04-29** `ba1ceff8b2ff` — 1 info
  - added the new optional request property `excludeHistory`
- **2026-04-28** `3e3822f627bd` — 1 warning
  - removed the request property `excludeHistory`
- **2026-04-28** `ba1ceff8b2ff` — 1 info
  - added the new optional request property `excludeHistory`
- **2026-02-12** `7eb1c31fb938` — 3 info
  - added the new optional request property `format`
  - added the optional property `info/structured` to the response with the `200` status
  - added `#/components/schemas/StructuredOutputError` to the `info/error` response property `anyOf` list for the response status `200`
- **2026-02-11** `8f23f1074f57` — 2 info
  - added the optional property `info/tokens/total` to the response with the `200` status
  - added the optional property `parts/items/anyOf[#/components/schemas/StepFinishPart]/tokens/total` to the response with the `200` status
- **2026-02-09** `3e70f65f33fa` — 1 info
  - added `#/components/schemas/ContextOverflowError` to the `info/error` response property `anyOf` list for the response status `200`
- **2026-02-06** `73bbed0ce3ce` — 1 info
  - added the optional property `info/variant` to the response with the `200` status
- **2026-01-20** `c7ae6a68e4fb` — 7 warning, 1 info
  - removed the request property `excludeHistory`
  - removed the request property `format`
  - removed the optional property `info/stepCapped` from the response with the `200` status
  - removed the optional property `info/structured` from the response with the `200` status
  - removed the optional property `info/tokens/total` from the response with the `200` status
  - removed the optional property `info/variant` from the response with the `200` status
  - removed the optional property `parts/items/anyOf[#/components/schemas/StepFinishPart]/tokens/total` from the response with the `200` status
  - removed `#/components/schemas/StructuredOutputError, #/components/schemas/ContextOverflowError` from the `info/error` response property `anyOf` list for the response status `200`

---

[Operation](https://skmtc.dev/cyberstrikeus/apis/cyberstrike/docs/session/:sessionID/message/post.md) · [API](https://skmtc.dev/cyberstrikeus/apis/cyberstrike.md) · [Page](https://skmtc.dev/cyberstrikeus/apis/cyberstrike/changes/session/:sessionID/message/post)