Mastra

Mastra is an open-source TypeScript framework for building AI agents and AI-powered applications. It gives developers agents, workflows, memory, server runtime, and observability in one toolkit for moving from prototype to production.

It supports typed agents with instructions, models, tools, and runtime behavior, plus multi-step workflows with typed control flow. Memory includes observational memory, semantic recall, and thread-aware storage.

Mastra also includes built-in observability with traces, metrics, logs, evals, experiments, scorers, and datasets. It runs as a standalone server and is meant to work with frontend and backend frameworks like React, Next.js, and Node.