Slack MCP Server
by jtalk22communityv3.2.5
21
12
This MCP server allows AI agents to access Slack without app registration, admin approval, or OAuth, using browser session tokens instead. It provides 16 tools for various Slack interactions.
From the registry: Slack MCP for self-host or managed Cloud, with Gemini CLI and secure-default HTTP.
Install & configure
Prerequisites
- required
Install in your client
Paste into the AI you're chatting with — it will figure out the rest
Please install the `slack-mcp-server` MCP server into my current AI client (that's you).
Required prerequisites (do these first if not already done):
- **Node.js 20+** — Node.js 20 or later required (https://nodejs.org)
Canonical MCP server config (stdio transport):
- command: `npx`
- args: ["-y","@jtalk22/slack-mcp"]
- optional environment variables:
- `SLACK_TOKEN`: Slack session token (xoxc-). Required on Windows/Linux. On macOS, auto-extracted from Chrome. (example: `xoxc-<your_token>`)
- `SLACK_COOKIE`: Slack session cookie (xoxd-). Required on Windows/Linux. On macOS, auto-extracted from Chrome. (example: `xoxd-<your_cookie>`)
Note: Uses browser session tokens (xoxc-/xoxd-), not official OAuth. Run 'npx -y @jtalk22/slack-mcp --setup' for interactive setup wizard. On macOS, tokens auto-extracted from Chrome. 16 tools total (12 read-only, 4 write).
Add this MCP server to my current client's config in the correct format for you. If you need secrets or credentials I haven't provided, ASK me — do not invent values or leave raw placeholders. After adding it, tell me how to verify the server is connected.Note: Uses browser session tokens (xoxc-/xoxd-), not official OAuth. Run 'npx -y @jtalk22/slack-mcp --setup' for interactive setup wizard. On macOS, tokens auto-extracted from Chrome. 16 tools total (12 read-only, 4 write).
Tools (16)
slack_health_check
Verify token validity and workspace info
slack_token_status
Token age, health, and cache stats
slack_refresh_tokens
Auto-extract fresh tokens from Chrome
slack_list_conversations
List DMs and channels
slack_conversations_history
Get messages from a channel or DM
slack_get_full_conversation
Export full history with threads
slack_search_messages
Search across workspace
slack_get_thread
Get thread replies
slack_users_info
Get user details
slack_list_users
List workspace users (paginated, 500+)
slack_users_search
Search users by name, display name, or email
slack_conversations_unreads
Get channels/DMs with unread messages
slack_send_message
Send a message to any conversation
slack_add_reaction
Add an emoji reaction to a message
Environment variables
SLACK_TOKENrequiredToken for accessing SlackSLACK_COOKIErequiredCookie for accessing SlackPrerequisites
- • Node.js 20+
Packages
@jtalk22/slack-mcp
npmv3.2.5transport: stdio
Remote Endpoints
https://mcp.revasserlabs.com/oauth/mcp
type: streamable-http
Details
- Language
- JavaScript
- License
- MIT
- Released
- Mar 12, 2026
- Last commit
- Apr 10, 2026
- Registry name
- io.github.jtalk22/slack-mcp-server