---
title: "Changes to Create Message"
method: POST
path: "/v1/omni-ai/threads/{thread_id}/messages"
---

# Changes to Create Message

`POST /v1/omni-ai/threads/{thread_id}/messages`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 1 of 62 revisions.

- **2026-10-16** `1bd9eddeffc8`: 8 breaking, 5 warning, 14 info

## Changes

- **2026-10-16** `1bd9eddeffc8`: 8 breaking, 5 warning, 14 info
  - removed the required property `code` from the response with the `400` status
  - removed the required property `code` from the response with the `409` status
  - removed the required property `code` from the response with the `422` status
  - removed the required property `code` from the response with the `500` status
  - removed the required property `message` from the response with the `400` status
  - removed the required property `message` from the response with the `409` status
  - removed the required property `message` from the response with the `422` status
  - removed the required property `message` from the response with the `500` status
  - the `account_id` request property's min was set to `1.00`
  - removed the optional property `details` from the response with the `400` status
  - removed the optional property `details` from the response with the `409` status
  - removed the optional property `details` from the response with the `422` status
  - removed the optional property `details` from the response with the `500` status
  - added the new optional request property `context`
  - the request property `account_id` became nullable
  - the request property `account_id` became optional
  - added the non-success response with the status `401`
  - added the non-success response with the status `403`
  - added the non-success response with the status `404`
  - added the required property `error` to the response with the `400` status
  - added the required property `error` to the response with the `409` status
  - added the required property `error` to the response with the `422` status
  - added the required property `error` to the response with the `500` status
  - added the required property `metadata` to the response with the `400` status
  - added the required property `metadata` to the response with the `409` status
  - added the required property `metadata` to the response with the `422` status
  - added the required property `metadata` to the response with the `500` status

---

[Operation](https://skmtc.dev/clear-street/apis/clear-street-trading-api/docs/v1/omni-ai/threads/:thread_id/messages/post.md) - [API](https://skmtc.dev/clear-street/apis/clear-street-trading-api.md) - [Page](https://skmtc.dev/clear-street/apis/clear-street-trading-api/changes/v1/omni-ai/threads/:thread_id/messages/post)