Slack MCP Server

Search messages, read channels, and post to Slack from your AI agent

By Anthropic (official) ★ 3.1K stars official messaging team

The Slack MCP Server connects Claude to your Slack workspace. Agents can search message history, read channel contents, get user profiles, and post messages — making it easy to build AI assistants that understand and participate in team conversations.

Installation & Configuration

Add this block to your claude_desktop_config.json (or your agent framework's MCP config file):

{
  "mcpServers": {
    "slack": {
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-slack"],
      "env": {
        "SLACK_BOT_TOKEN": "xoxb-your-token",
        "SLACK_TEAM_ID": "T0XXXXXXXXX"
      }
    }
  }
}

Config file location:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
Windows: %APPDATA%\Claude\claude_desktop_config.json
Linux: ~/.config/claude/claude_desktop_config.json

Available Tools (8)

slack_list_channels
slack_post_message
slack_reply_to_thread
slack_add_reaction
slack_get_channel_history
slack_get_thread_replies
slack_get_users
slack_get_user_profile

Use Cases

Team digest — ask Claude to summarize a channel's activity
Incident response — post alerts and updates from agent workflows
Onboarding search — help new team members find relevant messages

Source & Documentation

GitHub Repository: https://github.com/modelcontextprotocol/servers/tree/main/src/slack

Protocol: Model Context Protocol (MCP) — modelcontextprotocol.io

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