AI agent framework for TypeScript from the Gatsby team. Build agents with tools, workflows, RAG, memory, evals, and 50+ integrations. Modern TS-native design. 22K+ stars.
Production TypeScript framework for building AI agents with tool use, workflows, RAG, and memory. First-class MCP support. Deploy anywhere Node.js runs. 9,000+ GitHub stars.
Mastra Workflows defines multi-step typed agent flows in TypeScript. Build pipelines with .then(), .branch(), .parallel(), .while(). End-to-end type-safe.