---
title: "Changes to Join an existing swarm"
method: POST
path: "/swarm/join"
---

# Changes to Join an existing swarm

`POST /swarm/join`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 3 of 79 revisions.

- **2026-02-24** `6df97b60796c`: 2 breaking, 5 info
- **2026-02-14** `31f80d10d31a`: 2 breaking, 5 info
- **2026-02-09** `831637d06c77`: 1 breaking, 3 info

## Changes

- **2026-02-24** `6df97b60796c`: 2 breaking, 5 info
  - removed the request body
  - removed the success response with the status `204`
  - api tag `Swarm` added
  - added the non-success response with the status `400`
  - added the non-success response with the status `500`
  - added the non-success response with the status `503`
  - added the success response with the status `200`
- **2026-02-14** `31f80d10d31a`: 2 breaking, 5 info
  - removed the media type `text/plain` from the request body
  - removed the success response with the status `200`
  - api tag `Swarm` removed
  - removed the non-success response with the status `400`
  - removed the non-success response with the status `500`
  - removed the non-success response with the status `503`
  - added the success response with the status `204`
- **2026-02-09** `831637d06c77`: 1 breaking, 3 info
  - added required request body
  - added the media type `application/json` for the response with the status `400`
  - added the media type `application/json` for the response with the status `500`
  - added the media type `application/json` for the response with the status `503`

---

[Operation](https://skmtc.dev/hexlet/apis/docker-engine-api/docs/swarm/join/post.md) - [API](https://skmtc.dev/hexlet/apis/docker-engine-api.md) - [Page](https://skmtc.dev/hexlet/apis/docker-engine-api/changes/swarm/join/post)