Slack MCP Server

by pulsemcp Your server? Claim it

local only

Slack runs on your own machine — the client starts it, so there is no endpoint to ping. 884 installs a week from npm. Last commit 30 Aug 2026.

MCP server for Slack — read/write messages, manage threads, and react to messages.

Installs per day peak 188 · avg 68 · +33% w/w

a month agotoday

884

Installs / week

npm · slack-workspace-mcp-server

Stars

26 open issues

30 Aug 2026

Last commit

0 releases in 90 days

MIT

License

TypeScript

Nothing serious here today

Today is the operative word: we check Slack every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add slack -- npx -y slack-workspace-mcp-server

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "slack": {
      "args": [
        "-y",
        "slack-workspace-mcp-server"
      ],
      "command": "npx"
    }
  }
}

~/.codex/config.toml

[mcp_servers.slack]
command = "npx"
args = ["-y", "slack-workspace-mcp-server"]

.cursor/mcp.json

{
  "mcpServers": {
    "slack": {
      "args": [
        "-y",
        "slack-workspace-mcp-server"
      ],
      "command": "npx"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "slack": {
      "args": [
        "-y",
        "slack-workspace-mcp-server"
      ],
      "command": "npx"
    }
  }
}

This one needs environment variables set before it will start: SLACK_BOT_TOKEN (Slack Bot User OAuth Token starting with xoxb-.), ENABLED_TOOLGROUPS (Comma-separated list of tool groups to enable (readonly, write).). The author declared them in the registry entry; get the values from the project itself.

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Slack — questions

Answers built from our own checks of this server.

Why is there no uptime for Slack?

Slack runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package slack-workspace-mcp-server was installed 884 times last week.

How do I connect Slack?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls slack-workspace-mcp-server straight from npm; nothing to host, nothing to sign up for.

How many people use Slack?

The npm package slack-workspace-mcp-server was installed 884 times in the last week. Week over week that is +33%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Slack open source?

Yes — it is published under the MIT licence, written in TypeScript, 80 stars on GitHub and 26 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.