FastMCP

About

FastMCP is a TypeScript framework designed to simplify the creation of MCP servers that can efficiently manage client sessions and interactions. It provides a comprehensive set of features, including tool definition, authentication, session management, SSE support, logging, error handling, and more. With FastMCP, developers can easily build robust and scalable MCP servers that adhere to the Model Context Protocol, enabling seamless communication and data exchange between clients and servers. It uses the Standard Schema specification for defining tool parameters and also provides CLI tools for testing and debugging.

Key Features

• Provides Logging and Error handling mechanisms
• CLI for testing and debugging
• Simple Tool, Resource, Prompt definition
• 1,296 GitHub stars
• Supports Authentication and Sessions
• Automated SSE pings
• Supports Progress Notifications
• Includes Server-Sent Events (SSE) support

Use Cases

• Creating servers for real-time updates using SSE
• Building MCP servers for AI model interaction
• Developing tools with auto-completion for prompt arguments