# Slack MCP server

> Search messages and channels, read threads, send messages and work with canvases, files and lists in Slack.

- Listing: https://mcp.tc/i/slack
- Connect: use the server's own URL `https://mcp.slack.com/mcp` (OAuth sign-in at the server); clients connect to it directly. The listing link is a page, not an MCP endpoint.
- Type: remote (Streamable HTTP)
- Auth: OAuth sign-in
- Category: [Communication & Meetings](https://mcp.tc/c/communication)
- Vendor: Slack
- Verified: yes, mcp.tc checked that this is the official server (https://mcp.tc/verify). It says who runs the server, not that it is safe.
- Homepage: <https://docs.slack.dev/ai/slack-mcp-server/>
- Docs: <https://api.slack.com>

## About

The Slack MCP server lets an MCP client act on a Slack workspace. It can search messages, files, users and channels, read channel history and threads, send, schedule and draft messages, add reactions, and create channels. It also covers canvases, user profiles, file uploads and Slack lists.

It runs as a hosted streamable HTTP endpoint at mcp.slack.com. Users sign in with Slack through OAuth, and workspace admins can approve and manage which MCP client integrations are allowed.

## What it can do

- Search messages, files, users and channels
- Read channel history and full message threads
- Send, schedule and draft messages
- Create channels and add or read emoji reactions
- Create, update and read canvases
- Upload files and share them to a channel
- Create and read Slack lists

## Example prompts

- "Search Slack for messages about the Q3 launch from last week"
- "Summarize the thread on the latest message in #incidents"
- "Post a status update to #engineering saying the deploy is done"
- "Create a canvas with notes from today's planning discussion"

## Install

### Claude Code

1. Run this in a terminal, in your project folder:

```bash
claude mcp add --transport http slack https://mcp.slack.com/mcp
```

2. Start Claude Code, type `/mcp`, pick **slack** and choose **Authenticate**. A browser window opens for the Slack sign-in.

Add `--scope user` to make it available in every project, not just this one.

### Claude Desktop

1. Open **Settings → Connectors** and click **Add custom connector**.

2. Name it **Slack** and paste this URL:

```url
https://mcp.slack.com/mcp
```

3. Click **Add**, then **Connect**, and sign in when Slack asks.

Claude Desktop’s JSON config file only starts local servers. Remote servers go through Connectors, and connectors you add on claude.ai show up here too.

### claude.ai

1. Open the connector form on claude.ai. This button fills in the name and URL for you:

[Add to claude.ai](<https://claude.ai/customize/connectors?modal=add-custom-connector&connectorName=Slack&connectorUrl=https%3A%2F%2Fmcp.slack.com%2Fmcp>) (opens connector settings)

2. Check that the URL reads `https://mcp.slack.com/mcp` and click **Add**.

3. Click **Connect** and sign in when Slack asks.

Free plans allow one custom connector. On Team and Enterprise plans an owner adds it under **Organization settings → Connectors**.

### ChatGPT

1. On chatgpt.com, open **Settings → Security and login** and turn on **Developer mode**.

2. Go to `chatgpt.com/plugins` and click **+** to create an app for a remote MCP server.

3. Paste `https://mcp.slack.com/mcp` as the server URL and choose **OAuth**. ChatGPT sends you to Slack to sign in.

Developer mode is available on the web for Plus, Pro, Business, Enterprise and Education accounts.

### Cursor

[Add to Cursor](<https://cursor.com/install-mcp?name=slack&config=eyJ1cmwiOiJodHRwczovL21jcC5zbGFjay5jb20vbWNwIn0%3D>) (opens Cursor)

Or add it by hand to `~/.cursor/mcp.json` (all projects) or `.cursor/mcp.json` (this project):

`mcp.json`:

```json
{
  "mcpServers": {
    "slack": {
      "url": "https://mcp.slack.com/mcp"
    }
  }
}
```

Cursor shows **Needs login** next to the server. Click it to sign in.

### VS Code

[Install in VS Code](<https://vscode.dev/redirect/mcp/install?name=slack&config=%7B%22type%22%3A%22http%22%2C%22url%22%3A%22https%3A%2F%2Fmcp.slack.com%2Fmcp%22%7D>) (opens VS Code)

Or from a terminal:

```bash
code --add-mcp '{"name":"slack","type":"http","url":"https://mcp.slack.com/mcp"}'
```

Or commit it to the repo in `.vscode/mcp.json`:

`.vscode/mcp.json`:

```json
{
  "servers": {
    "slack": {
      "type": "http",
      "url": "https://mcp.slack.com/mcp"
    }
  }
}
```

VS Code asks you to sign in the first time the server starts.

### Devin Desktop

1. Add it to `~/.config/devin/mcp_config.json` (macOS and Linux) or `%APPDATA%\devin\mcp_config.json` (Windows):

`mcp_config.json`:

```json
{
  "mcpServers": {
    "slack": {
      "serverUrl": "https://mcp.slack.com/mcp"
    }
  }
}
```

2. Refresh the MCP server list in Cascade and sign in when asked.

Devin Desktop is the new name for Windsurf. It reads `serverUrl` (or `url`) for remote servers.

### Codex

```bash
codex mcp add slack --url https://mcp.slack.com/mcp
codex mcp login slack
```

Or edit `~/.codex/config.toml` directly:

`config.toml`:

```toml
[mcp_servers.slack]
url = "https://mcp.slack.com/mcp"
```

### Gemini CLI

```bash
gemini mcp add --transport http slack https://mcp.slack.com/mcp
```

Then, inside Gemini CLI, run `/mcp auth slack` to sign in.

This adds it to the current project. Add `-s user` to use it everywhere.

### Any client

Most clients accept this shape. Some name the URL field differently: `serverUrl` in Devin Desktop, `httpUrl` in Gemini CLI’s settings file.

```json
{
  "mcpServers": {
    "slack": {
      "type": "http",
      "url": "https://mcp.slack.com/mcp"
    }
  }
}
```

Zed puts servers under `context_servers` in its settings. Cline needs `"type": "streamableHttp"`, or it assumes SSE.

Client only starts local servers? Bridge it with `npx -y mcp-remote https://mcp.slack.com/mcp`.

## Details

- Last checked: 2026-10-03 (reachable, asks for credentials)
- Listed: 2026-10-03
- Updated: 2026-10-03

---
Source: https://mcp.tc/i/slack (mcp.tc is an independent directory, not affiliated with this server's publisher). Corrections: https://mcp.tc/report