How to Connect Slack to Claude, ChatGPT or Any AI Agent
Every way to connect Slack to an AI: Claude's one-click connector, ChatGPT's app, the Slack MCP server, and the zero-setup option.
Option 1: Claude's Slack connector (easiest)
- Open Claude, go to Customize → Connectors.
- Find Slack in the directory, click it, and approve the OAuth prompt.
- Done: Claude can now read and summarize channels and DMs you have access to, and post where allowed.
Works on claude.ai, Claude Desktop and mobile. Admin approval may be required on Team/Enterprise workspaces.
Option 2: ChatGPT's Slack app
- ChatGPT → Settings → Apps (connected apps now live inside plugins).
- Find Slack, connect your account, authorize.
- Availability depends on your plan and region; Business workspaces may need an admin to enable it.
Option 3: Slack MCP server (Claude Code and other MCP clients)
The community Slack MCP server (@modelcontextprotocol/server-slack) connects to any MCP client:
claude mcp add slack -- npx -y @modelcontextprotocol/server-slackYou need to create a Slack app in your workspace admin to get a bot token and signing secret, set the right OAuth scopes (channels:read, chat:write etc.), then pass them to the server via environment variables. It works, but this is the path where setup eats an evening.
What connecting Slack actually gets you
- "Summarize #product from this week" instead of reading 400 messages.
- "Draft a reply to Sarah's question in #support" with the thread context loaded.
- Turning a chat conversation into a posted update without copy-paste.
- Agents that monitor a channel and act on triggers (with scheduled tasks).
The zero-setup version: Krater
Krater's agent ships with Slack already integrated (alongside Gmail, Notion, GitHub, Linear, Figma, Drive, Calendar and 30+ more). You connect Slack once via OAuth, and the agent uses it when a task calls for it: no app store, no tokens, no MCP config. Because Krater runs Claude, GPT, Gemini and 500+ other models, the same Slack connection works no matter which model answers. See the Slack integration.
Privacy note
Whichever path you pick, connecting Slack gives the AI what your Slack account can see. Prefer read-only scopes where offered, and disconnect apps you stop using.