xmcp

xmcp is a development framework specifically designed for creating MCP servers. MCP, or Model Context Protocol, is a standard that lets AI models like Claude interact with external tools and data. With xmcp, developers can build servers that provide custom tools, prompts, and resources that AI assistants can call upon. This means you can create a server that, for example, fetches live weather data, queries a internal database, or performs a specific calculation, and then make that functionality available to an AI within its workflow.

The framework is built with TypeScript, offering type safety and a familiar development experience. It includes features like file system-based routing that automatically registers your tools, support for multiple transport protocols (HTTP or STDIO), and middleware for adding custom logic like authentication. You can configure it extensively and even integrate it directly into existing Next.js or Express applications. The setup process is streamlined with a CLI tool that scaffolds a new project and guides you through configuration.

This tool is built for developers who want to extend the capabilities of AI assistants by connecting them to custom data sources and APIs. Use cases include building internal tools for a company's specific data, creating monetizable APIs that AI models can access, or developing specialized utilities that enhance an AI's problem-solving abilities. It's particularly useful for teams already working with TypeScript who want a structured way to build and deploy these kinds of AI-augmenting services.