Slack MCP Server

This is the original Slack reference server from the Model Context Protocol servers repository, one of the first integrations published to show what a real world MCP connector looks like. It wraps the Slack Web API with a small, readable tool set: listing the public channels a bot can see, posting a message to a channel, replying inside a thread, adding an emoji reaction, pulling recent channel history, fetching the replies on a specific thread, listing workspace users, and reading a user profile. It runs as a local server authenticated with a Slack bot token and a team ID, so the agent inherits exactly the scopes and channel memberships you granted the app. That scoping matters more than the feature list: a bot that has not been invited to a channel cannot read it, which is the natural guardrail for letting an assistant summarize a discussion or post a status update. The listing lives in the archived section of the reference servers repository, since Slack and several third parties publish their own maintained connectors. It stays useful in two ways: as a working starting point to fork for a private workspace integration, and as a compact code sample for anyone learning how MCP tool definitions, arguments, and error handling are meant to be structured. Check its maintenance status before depending on it in production, and prefer a maintained connector for anything customer facing.