The official Java SDK for Model Context Protocol servers and clients. Maintained in collaboration with Spring AI
blazigly fast gRPC/MCP client & server implementation in zig

A Model Context Protocol (MCP) client library and debugging toolkit in Rust. This foundation provides both a production-ready SDK for building MCP integrations and the core architecture for an interactive debugger.
Rails Engine with MCP compliant Spec.
ScaledMCP is a horizontally scalabled MCP and A2A Server. You know, for AI.
The full-stack TypeScript framework to build, test, and deploy production-ready MCP servers and AI-native apps.
Code, Build and Evaluate agents - excellent Model and Skills/MCP/ACP/A2A Support
A minimal yet powerful framework for creating AI agents with full control over tools, providers, and execution flow.
🌋 Build AI agents that seamlessly combine LLM reasoning with real-world actions via MCP tools — in just a few lines of TypeScript.