Slack MCP Server

MCP server · by jtalk22

Communication npmStreamable HTTP v5.2.1

Catch up on Slack without reading it. Unreads, threads, search. Browser-session or hosted OAuth.

View source ↗ Website ↗ Generate config for multiple servers More servers

Install

Pin version registry version 5.2.1

npm
npx -y @jtalk22/slack-mcp

npm
npx -y @jtalk22/slack-mcp@5.2.1

Streamable HTTP
https://mcp.revasserlabs.com/oauth/mcp

Setup by client

Pick your client — the config below is generated for this server (both local and hosted-endpoint forms). Copy respects the “Pin version” switch above.

claude_desktop_config.json

{
  "mcpServers": {
    "slack-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@jtalk22/slack-mcp"
      ],
      "env": {
        "SLACK_TOKEN": "<YOUR_SLACK_TOKEN>",
        "SLACK_COOKIE": "<YOUR_SLACK_COOKIE>"
      }
    }
  }
}

{
  "mcpServers": {
    "slack-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@jtalk22/slack-mcp@5.2.1"
      ],
      "env": {
        "SLACK_TOKEN": "<YOUR_SLACK_TOKEN>",
        "SLACK_COOKIE": "<YOUR_SLACK_COOKIE>"
      }
    }
  }
}

Remote (hosted) endpoint

https://mcp.revasserlabs.com/oauth/mcp

Claude Desktop: Settings → Connectors → Add custom connector, paste this URL.

Format verified against the official Claude Desktop docs ↗.

terminal

claude mcp add --env SLACK_TOKEN=<YOUR_SLACK_TOKEN> --env SLACK_COOKIE=<YOUR_SLACK_COOKIE> slack-mcp-server -- npx -y @jtalk22/slack-mcp

claude mcp add --env SLACK_TOKEN=<YOUR_SLACK_TOKEN> --env SLACK_COOKIE=<YOUR_SLACK_COOKIE> slack-mcp-server -- npx -y @jtalk22/slack-mcp@5.2.1

terminal

claude mcp add --transport http slack-mcp-server https://mcp.revasserlabs.com/oauth/mcp

Format verified against the official Claude Code docs ↗.

.cursor/mcp.json

{
  "mcpServers": {
    "slack-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@jtalk22/slack-mcp"
      ],
      "env": {
        "SLACK_TOKEN": "<YOUR_SLACK_TOKEN>",
        "SLACK_COOKIE": "<YOUR_SLACK_COOKIE>"
      }
    }
  }
}

{
  "mcpServers": {
    "slack-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@jtalk22/slack-mcp@5.2.1"
      ],
      "env": {
        "SLACK_TOKEN": "<YOUR_SLACK_TOKEN>",
        "SLACK_COOKIE": "<YOUR_SLACK_COOKIE>"
      }
    }
  }
}

.cursor/mcp.json (hosted endpoint)

{
  "mcpServers": {
    "slack-mcp-server": {
      "url": "https://mcp.revasserlabs.com/oauth/mcp"
    }
  }
}

Format verified against the official Cursor docs ↗.

.vscode/mcp.json

{
  "servers": {
    "slack-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@jtalk22/slack-mcp"
      ],
      "env": {
        "SLACK_TOKEN": "<YOUR_SLACK_TOKEN>",
        "SLACK_COOKIE": "<YOUR_SLACK_COOKIE>"
      }
    }
  }
}

{
  "servers": {
    "slack-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@jtalk22/slack-mcp@5.2.1"
      ],
      "env": {
        "SLACK_TOKEN": "<YOUR_SLACK_TOKEN>",
        "SLACK_COOKIE": "<YOUR_SLACK_COOKIE>"
      }
    }
  }
}

.vscode/mcp.json (hosted endpoint)

{
  "servers": {
    "slack-mcp-server": {
      "type": "http",
      "url": "https://mcp.revasserlabs.com/oauth/mcp"
    }
  }
}

Format verified against the official VS Code docs ↗.

mcp_config.json

{
  "mcpServers": {
    "slack-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@jtalk22/slack-mcp"
      ],
      "env": {
        "SLACK_TOKEN": "<YOUR_SLACK_TOKEN>",
        "SLACK_COOKIE": "<YOUR_SLACK_COOKIE>"
      }
    }
  }
}

{
  "mcpServers": {
    "slack-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@jtalk22/slack-mcp@5.2.1"
      ],
      "env": {
        "SLACK_TOKEN": "<YOUR_SLACK_TOKEN>",
        "SLACK_COOKIE": "<YOUR_SLACK_COOKIE>"
      }
    }
  }
}

mcp_config.json (hosted endpoint)

{
  "mcpServers": {
    "slack-mcp-server": {
      "serverUrl": "https://mcp.revasserlabs.com/oauth/mcp"
    }
  }
}

Format verified against the official Windsurf docs ↗.

Environment variables

Defined in the server's official registry manifest. Required secrets are shown as <YOUR_…> placeholders in the configs above.

SLACK_TOKEN secret — Slack xoxc- token from browser session
SLACK_COOKIE secret — Slack xoxd- cookie from browser session

GitHub

⭐ 32 stars · 最近更新于 31 天前 · MIT license

About this server

Slack MCP Server Catch up on Slack without reading it. Unreads, threads, and search — in your agent’s context, from the session you already…

Summary from the project README — github.com/jtalk22/slack-mcp-server

Distributed as npm, Streamable HTTP, listed under Communication. Review our MCP security guide before granting access to real data.

Frequently asked questions

What does the Slack MCP Server MCP server do?

Slack MCP Server Catch up on Slack without reading it. Unreads, threads, and search — in your agent’s context, from the session you already

How do I install Slack MCP Server?

Run the install command shown above, then paste the config for your client (Claude Desktop, Claude Code, Cursor, VS Code or Windsurf) into its MCP settings and restart the client.

Is Slack MCP Server free to use?

The MCP server itself is free to install. The source is public on https://github.com/jtalk22/slack-mcp-server. Any third-party service it calls may require its own API key and account.

Which clients support Slack MCP Server?

Any MCP-compatible client can use it, including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf and custom agents.

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