---
title: "Changes to Add participants to an agent thread"
method: POST
path: "/api/agent-threads/{threadId}/participants"
---

# Changes to Add participants to an agent thread

`POST /api/agent-threads/{threadId}/participants`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 5 of 88 revisions.

- **2026-10-20** `e7589d61175d`: 1 info
- **2026-10-20** `1c47601b37c0`: 1 breaking
- **2026-10-20** `ebeab1520daa`: 1 info
- **2026-10-14** `59a844bdcb75`: 1 breaking
- **2026-10-12** `25ac51b05541`: 1 info

## Changes

- **2026-10-20** `e7589d61175d`: 1 info
  - endpoint added
- **2026-10-20** `1c47601b37c0`: 1 breaking
  - api path removed without deprecation
- **2026-10-20** `ebeab1520daa`: 1 info
  - endpoint added
- **2026-10-14** `59a844bdcb75`: 1 breaking
  - api path removed without deprecation
- **2026-10-12** `25ac51b05541`: 1 info
  - endpoint added

---

[Operation](https://skmtc.dev/sixb-ai/apis/sixb-api/docs/api/agent-threads/:threadId/participants/post.md) - [API](https://skmtc.dev/sixb-ai/apis/sixb-api.md) - [Page](https://skmtc.dev/sixb-ai/apis/sixb-api/changes/api/agent-threads/:threadId/participants/post)