Mastra

Mastra is a development framework that helps you build AI-powered applications and agents using TypeScript. It provides everything you need to create, test, and deploy AI agents that can perform complex tasks, access external tools, and maintain memory across interactions. The framework handles the underlying infrastructure so developers can focus on building agent logic rather than managing AI plumbing.

The framework includes specific components for building agents, designing workflows, implementing RAG (Retrieval Augmented Generation), managing memory, and connecting to tools via MCP (Model Context Protocol). You can run agents in a local development server, visualize their behavior in a developer studio, and use built-in observability to trace calls and monitor performance. Mastra integrates with popular web frameworks like Next.js, Express, and Hono, and it's fully open-source under Apache 2.0.

Mastra works best for developers and engineering teams building production AI applications. Use cases include creating browsing agents that interact with websites, building database query interfaces using natural language, developing analysis tools for spreadsheets, or implementing customer service agents. It's particularly valuable for teams that want to ship AI features quickly while maintaining control over their code and infrastructure.