Bernerspace (Slack)

Integrates with Slack workspaces through OAuth 2.0 authentication and JWT-based client identification to provide messaging, channel management, file operations, user administration, and team management capabilities across multiple organizations with persistent token storage.

Slack Bot MCP server that provides comprehensive Slack workspace integration with OAuth 2.0 authentication, JWT-based client identification, and PostgreSQL token storage for persistent multi-user access. Built with FastMCP and the official Slack SDK, the implementation offers 47+ tools covering messaging, channel management, file uploads, reactions, pins, bookmarks, user management, and team administration, with automatic file source detection for URLs, local paths, and text content. Features a complete OAuth callback flow that maps JWT client IDs to Slack workspace tokens, enabling secure multi-tenant usage where different users can authenticate with their own Slack workspaces, making it valuable for AI assistants that need full Slack functionality across multiple organizations without manual token management.