TypeScript SDK for Model Context Protocol Development

Model Context Protocol TypeScript SDK is a software development kit that facilitates the implementation of the Model Context Protocol (MCP) for servers and clients. This SDK is currently in pre-alpha development for version 2, with a stable release anticipated in Q1 2026. The v1.x version remains recommended for production use and will continue to receive updates for at least six months after the v2 release.

Key features:

• MCP server libraries - Includes tools, resources, prompts, Streamable HTTP, and authentication helpers.
• MCP client libraries - Provides transports and high-level helpers for client-side integration.
• Middleware packages - Optional packages for specific runtimes and frameworks such as Express and Hono.
• Runnable examples - Offers practical examples to help users get started with building MCP applications.

This SDK is designed for developers looking to integrate LLMs with standardized context management, enhancing the functionality and usability of their applications.