Slack Fast is a high-performance Model Context Protocol (MCP) server written in Go, designed to facilitate rapid and seamless integration of Slack communication into AI editors, terminals, and other development environments. Engineered for speed, it boasts a startup time of approximately 10ms, significantly outperforming Node.js and Python alternatives, which directly enhances the user experience for tools that launch a new process for each request. It offers three core MCP tools for posting messages, retrieving channel history, and replying to threads, alongside a robust CLI mode, an interactive setup wizard, and secure configuration options, making Slack interactions swift and efficient for developers.
Key Features
01Provides 3 core MCP tools: `slack_post_message`, `slack_get_history`, `slack_post_thread`
02Offers a dedicated CLI mode for terminal-based Slack interactions
03Includes an interactive setup wizard for easy configuration
04Supports per-project configuration files and cross-platform binaries
05Ensures secure token management with environment variable references and hardcoded token warnings
060 GitHub stars
Use Cases
01Integrating Slack messaging and history retrieval directly into AI coding assistants like Cursor, Windsurf, or Claude Desktop
02Managing Slack communications (posting, reading, replying) from the command line or scripting environments
03Automating Slack interactions within development workflows for faster context switching
