slack-stdio-mcp

by GitHub Actions · Productivity · MCP server

slack-stdio-mcp is an MCP server by GitHub Actions. Agent-agnostic MCP stdio bridge to https://mcp.slack.com/mcp (user OAuth, PKCE, token refresh, tool proxy, local file download overlay). Its npm package was downloaded 492 times last week.

Category: Productivity
Author: GitHub Actions
GitHub stars: Not on GitHub
This week: Tracking since 18 Oct 2026
Weekly downloads: 492
Language: JavaScript
License: MIT (open source)
Last update: 2026-09-23 (31 days ago)
Links: Source npm

mcp
slack
stdio
model-context-protocol
oauth
pkce

How to install slack-stdio-mcp

slack-stdio-mcp is published on npm as slack-stdio-mcp, and it depends on @modelcontextprotocol/sdk. These steps assume it runs as a local stdio server, which is the usual setup.

Check the README. Confirm the start command and note any API keys or environment variables it needs (pass them with -e KEY=value or an env block). You need Node.js for npx.

Add it to Claude Code from a terminal:

claude mcp add slack-stdio-mcp -- npx -y slack-stdio-mcp

Or add it to Cursor or Claude Desktop in .cursor/mcp.json or claude_desktop_config.json:

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

Restart the client and check it. Run claude mcp list, or open the client's MCP settings, and confirm slack-stdio-mcp and its tools are listed. The install guide covers VS Code and Codex.

Also listed in

MCP servers for Slack73

Maintain this project? Get it featured ($99/mo, pinned at the top of Productivity) or see what featuring includes.

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Frequently asked questions

What is slack-stdio-mcp?

slack-stdio-mcp is an MCP server by GitHub Actions in the Productivity category. Agent-agnostic MCP stdio bridge to https://mcp.slack.com/mcp (user OAuth, PKCE, token refresh, tool proxy, local file download overlay). Its npm package was downloaded 492 times last week. It is written in JavaScript. It is licensed under MIT. It was last updated 31 days ago.

Is slack-stdio-mcp free and open source?

Yes. slack-stdio-mcp is published under the MIT license, so you can run, modify and self-host it at no cost. If it connects to a paid service, that service's own pricing and API terms still apply. Check the repository for the exact license text before using it commercially.

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