Mastra is an open source TypeScript framework for building AI agents, targeting web developers who traditionally work with JavaScript/TypeScript rather than Python. The framework provides agents, workflows, RAG functionality, memory systems, and developer tools like Mastra Studio for testing and debugging. It integrates with popular frontend frameworks (Next.js, Remix, Astro) and backend platforms (Vercel, Cloudflare Workers, AWS Lambda), plus agentic UI libraries like CopilotKit. The shift to TypeScript reflects GitHub's data showing TypeScript overtaking Python as the most-used language, making AI agent development accessible to the large community of full-stack web developers.
Table of contents
Why TypeScript?Starting with AI agentsWhat Mastra offers out of the boxFramework SupportSort: