Library / SDK
Agents & Orchestration
Mastra
1TypeScript 2framework 3for 4building 5AI 6agents.
the six Ws · specification
W1
Who
Open-source TypeScript agent framework.
W2
What
Builds agents, workflows, and RAG in TypeScript.
W3
Where
A Node or TypeScript library, self-hosted or serverless.
W4
When
When your stack is JavaScript, not Python.
W5
Why
Brings first-class agent tooling to TypeScript developers.
W6
With
Any LLM provider and a Node runtime.