---
title: "Joins a Slack channel."
method: POST
path: "/joinChannel"
tags: ["channel"]
---

# Joins a Slack channel.

`POST /joinChannel`

Join a specified Slack channel.

## Request body

- object
  - `body` object — Body of the joinChannel sls call
    - `arguments` object, required
      - `channelId` string, required — The ID of the channel to join. Channel IDs start with 'C'.

## Response `200`

Successful response

- object
  - `ok` boolean, required — Indicates if the request was successful.
  - `channel` object, required
    - `id` string — The ID of the channel.

## Other responses

- `400` — Bad Request - Invalid parameters
- `403` — Forbidden - Not authorized to join channel
- `404` — Not Found - Channel not found
- `500` — Internal Server Error

## Changes

- **2025-07-16** `6a2873d28ea3` — 1 info
  - endpoint added
- **2025-06-20** `37c50ff8be3a` — 1 breaking
  - api path removed without deprecation

[Change history](https://skmtc.dev/microfox-ai/apis/slack-d/changes/joinChannel/post.md)

---

[API](https://skmtc.dev/microfox-ai/apis/slack-d.md) · [All operations](https://skmtc.dev/microfox-ai/apis/slack-d/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/microfox-ai/slack-d/revisions/cd0edf0c2cdf/schema)