Slack MCP Server

Give your AI agent full Slack access. No app registration, no admin approval, no OAuth. One command, 16 tools, works with any MCP client.

npx -y @jtalk22/slack-mcp --setup

▶ Watch the demo — 7 scenarios, from 47 unreads to inbox zero, without opening Slack.

Ask your AI to catch you up on #engineering from the last 24 hours. Search for that deployment thread from last week. Find the printer admin PIN nobody can remember. Send a reply. All from your editor.

Interactive demo · Latest release

Why This Exists

Slack's official MCP server requires a registered app, admin approval, and doesn't work with Claude Code or GitHub Copilot due to OAuth/DCR incompatibility. Screenshotting messages is not a workflow.

This server uses your browser's session tokens instead. If you can see it in Slack, your AI agent can see it too. No app install, no scopes, no admin.

Stealth Mode: Session tokens leave zero footprint in your workspace admin panel. No bot user appears, no app install shows up, no audit trail. Your AI agent operates with the same invisibility as your browser tab.

| | Slack Official MCP | This Server | |---|---|---| | OAuth app required | Yes | No | | Admin approval | Yes | No | | Works with Claude Code | No (DCR incompatible) | Yes | | Works with Cursor | No | Yes | | Works with Copilot | No | Yes | | Works with Windsurf | No | Yes | | Works with Gemini CLI | No | Yes | | Works with Codex CLI | No | Yes | | Setup time | ~30 min | ~2 min | | Tools | Limited | 16 | | Visible to admins | Yes | No — Stealth Mode |

Quick Start per Client

{
  "mcpServers": {
    "slack": { "command": "npx", "args": ["-y", "@jtalk22/slack-mcp"] }
  }
}

{
  "mcpServers": {
    "slack": { "command": "npx", "args": ["-y", "@jtalk22/slack-mcp"] }
  }
}

{
  "mcpServers": {
    "slack": { "command": "npx", "args": ["-y", "@jtalk22/slack-mcp"] }
  }
}

{
  "mcpServers": {
    "slack": { "command": "npx", "args": ["-y", "@jtalk22/slack-mcp"] }
  }
}

[mcp_servers.slack]
command = "npx"
args = ["-y", "@jtalk22/slack-mcp"]

Tools

| Tool | Description | Safety | |------|-------------|--------| | slack_health_check | Verify token validity and workspace info | read-only | | slack_token_status | Token age, health, and cache stats | read-only | | slack_refresh_tokens | Auto-extract fresh tokens from Chrome | read-only* | | slack_list_conversations | List DMs and channels | read-only | | `slack_conversations

... View full README on GitHub