Mastra 是 TypeScript 优先的开源AI Agent框架（来自Gatsby团队）。提供工作流、RAG管道、记忆管理、MCP支持和内置评估——全链TypeScript。YC支持、融资1300万美金。专为偏好Node.js生态的工程团队设计，比LangChain更简洁。
Mastra is a TypeScript-first open-source AI agent framework (from the Gatsby team). It provides workflows, RAG pipelines, memory management, MCP support, and built-in evals. YC-backed with $13M funding — less ceremony than LangChain for TypeScript teams. 📖 文章: /post/essential-ai-tools-for-developers