Mastra

Verified 19 Aug 2026

TypeScript agent framework with workflows and evals attached.

Mastra is an open-source TypeScript framework for agents: workflows, tools, memory, and eval hooks in one TypeScript-native repo. It is aimed at app developers who did not want to write Python LangGraph.

Orchestration Verification

Model independence: Multi-model
Deployment: Self-hosted
Open source: Yes
License: Apache-2.0
Pricing model: Free
Added / updated: 19 Aug 2026 / 19 Aug 2026

mastra.ai · Docs · Source

Editorial take

Mastra is a good default if the factory’s control plane is already a TypeScript app. It is not a hosted Droids product. Evals in-framework are a start; they are not a hold-out gate unless you treat them as one.

Strengths

TypeScript-native agents and workflows.
Apache-2.0, model-agnostic.
Docs include eval/observability hooks rather than only chat.

Limitations

Younger than LangGraph; ecosystem is smaller.
You host it. There is no Mastra sandbox fleet.
Framework evals can become vanity tests.

Fields last checked against primary sources on 19 Aug 2026. Pricing and plan names rot; follow the vendor URL.