---
title: "Changes to Send Message"
method: POST
path: "/assistant/conversations/{conversation_id}/messages"
---

# Changes to Send Message

`POST /assistant/conversations/{conversation_id}/messages`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 3 of 16 revisions.

- **2026-08-13** `344acdc36dbb` — 4 info
- **2026-08-06** `933e8c8e6366` — 1 info
- **2026-07-26** `05003e7835a2` — 3 info

## Changes

- **2026-08-13** `344acdc36dbb` — 4 info
  - added the new optional request property `execution_context`
  - added the new optional request property `transient_context`
  - added `signal` discriminator mapping keys to the `context/items/` request property
  - added `#/components/schemas/SignalContext` to the `context/items/` request property `oneOf` list
- **2026-08-06** `933e8c8e6366` — 1 info
  - added the new optional request property `context/items/oneOf[subschema #1: PageContext]/metric_form_state`
- **2026-07-26** `05003e7835a2` — 3 info
  - the endpoint scheme security `ClassicAPIKeyHeader` was added to the API
  - added `page` discriminator mapping keys to the `context/items/` request property
  - added `#/components/schemas/PageContext` to the `context/items/` request property `oneOf` list

---

[Operation](https://skmtc.dev/galileo/apis/galileo-api-server/docs/assistant/conversations/:conversation_id/messages/post.md) · [API](https://skmtc.dev/galileo/apis/galileo-api-server.md) · [Page](https://skmtc.dev/galileo/apis/galileo-api-server/changes/assistant/conversations/:conversation_id/messages/post)