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Mastra

Maker: mastra-ai License: NOASSERTION Stars: 27.3k First released: 2024-08-06 Language: TypeScript

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About

Mastra gives TypeScript teams the primitives usually associated with Python agent frameworks: agents with tool calling and stopping conditions, workflows composed with .then()/.branch()/.parallel() that can suspend for human approval and resume with durable state, and memory that spans conversation history and retrieval. Model routing abstracts 40+ providers behind one interface, Mastra Studio provides a local UI for inspecting and testing agents, and evals integrate with deployment. A dedicated Harness subsystem packages workspace, shell tools, memory, and task tracking for building coding agents, and Mastracode skills integrate with Claude Code and Cursor. YC-backed and very actively maintained (27k+ stars), it targets product engineers embedding agents in applications.