---
title: "Changes to Create a message"
method: POST
path: "/messages"
---

# Changes to Create a message

`POST /messages`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 1 of 2 revisions.

- **2026-11-03** `80ba8288c51d`: 1 info

## Changes

- **2026-11-03** `80ba8288c51d`: 1 info
  - added the new optional `header` request parameter `X-OrcaRouter-Include-Cost`

---

[Operation](https://skmtc.dev/orcarouter/apis/orcarouter-api/docs/messages/post.md) - [API](https://skmtc.dev/orcarouter/apis/orcarouter-api.md) - [Page](https://skmtc.dev/orcarouter/apis/orcarouter-api/changes/messages/post)