---
title: "Changes to Send a message to a running session's agent"
method: POST
path: "/api/v1/sessions/{sessionId}/send"
---

# Changes to Send a message to a running session's agent

`POST /api/v1/sessions/{sessionId}/send`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 3 of 108 revisions.

- **2026-08-09** `2957de03297d` — 1 info
- **2026-07-11** `ff644229050b` — 1 info
- **2026-06-10** `b64f5ab46d87` — 1 info

## Changes

- **2026-08-09** `2957de03297d` — 1 info
  - added the new optional request property `attachment`
- **2026-07-11** `ff644229050b` — 1 info
  - added the non-success response with the status `409`
- **2026-06-10** `b64f5ab46d87` — 1 info
  - removed the non-success response with the status `409`

---

[Operation](https://skmtc.dev/composiohq/apis/agent-orchestrator-http-daemon/docs/api/v1/sessions/:sessionId/send/post.md) · [API](https://skmtc.dev/composiohq/apis/agent-orchestrator-http-daemon.md) · [Page](https://skmtc.dev/composiohq/apis/agent-orchestrator-http-daemon/changes/api/v1/sessions/:sessionId/send/post)