Mastra
TypeScript-first AI agent framework. Workflows, RAG, tool use, evals, and integrations. Built for production Node.js apps. Open-source.
Mastra is an open-source TypeScript framework for building AI agents and workflows in Node.js. It provides first-class primitives for tool calling, RAG pipelines with vector storage, multi-step workflows with branching and loops, and built-in evaluation harnesses for testing agent behavior. The developer experience is TypeScript-native throughout, with full type safety on tools, schemas, and workflow steps. It integrates with multiple LLM providers through a unified interface and includes connectors for common services like databases and APIs. For TypeScript developers who find LangChain too Python-centric and the Vercel AI SDK too low-level for complex agent patterns, Mastra fills the gap with a batteries-included approach.
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TypeScript-first AI agent framework. Workflows, RAG, tool use, evals, and integrations. Built for production Node.js apps. Open-source.
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