Mastra
New
Build production-ready AI agents and workflows in TypeScript with full type safety. Memory, tool calls, and observability included — no Python detour required.
Developer Tools
★ 4.4(890 reviews)freeOverview
Mastra is a TypeScript-first framework for building AI agents, multi-step workflows, and RAG pipelines — built by the team behind Gatsby. It ships first-class primitives for agent memory, tool calling, branching workflows, and observability in idiomatic TypeScript with full type safety. Runs locally for development and deploys to any Node.js environment or serverless platform without infrastructure lock-in.
Key Features
- TypeScript-first agent framework with full type inference
- Built-in agent memory with pluggable storage backends
- Workflow engine for multi-step, branching agent pipelines
- Native RAG support with vector store integrations
- Observability layer with traces, spans, and eval hooks
- Built on Vercel AI SDK — works with any LLM provider
Pros
- • TypeScript-native — no Python environment required for JS teams
- • Well-architected OSS from experienced maintainers
- • Fully open source with no forced cloud dependency
Cons
- • Younger ecosystem than LangChain — fewer community examples
- • TypeScript-only, not suitable for Python-first teams
- • No managed cloud runtime — deployment is self-directed
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