Mastra
The TypeScript agent framework built by ex-Gatsby engineers
Overview
Mastra is an open-source (Apache-2.0) TypeScript framework for AI agents, workflows and memory, built by the team behind Gatsby.js. It bundles tool orchestration, RAG, evals and MCP support into one package, with an optional Mastra Cloud for managed hosting and observability.
Pricing
Pricing shown for reference only. These figures reflect RECATOOLS research as of 12 Jul 2026 and may be out of date or incomplete. This is not financial or purchasing advice — always confirm the current price on the provider’s official website before making any decision.
- 100K observability events/mo (then $10/100K)
- 24 CPU-hours (then $0.35/hr)
- 15-day data retention
- 1M observability events/mo (then $8/100K)
- 250 CPU-hours (then $0.25/hr)
- 6-month data retention
- SSO and SOC 2 documentation
- Custom volume and retention
- RBAC and audit logs
- Uptime SLAs
- Dedicated support engineer
What you can produce with Mastra
- Unified agents, workflows, memory and RAG in one framework
- MCP client and server support (works with Cursor, Windsurf, Claude Desktop)
- Built-in evals and observability
- Local dev playground (Mastra Studio) for debugging agents
- Mastra Cloud for managed deployment and monitoring
- Apache-2.0 licensed, self-hostable on any infrastructure
- Vector store / RAG integrations
ASEAN Perspective
Mastra in Southeast Asia
ASEAN-region availability and pricing notes coming soon. Drop the editorial team a note via /contact/ if you can supply local context (Singapore/Malaysia/Indonesia/Thailand/Vietnam).
Mastra filled a real gap — a first-class TypeScript agent framework instead of a Python port — and adoption backs that up: 22,000-plus GitHub stars, 300,000-plus weekly npm downloads, and production users spanning Replit, SoftBank (live in about six weeks), PayPal, Adobe and Docker. It bundles agents, workflows, memory, RAG and MCP server/client support into one package rather than making you assemble five libraries.
The catch is a young ecosystem: docs are solid for getting started but thin once you're past basic agents, integrations number in the dozens rather than LangChain's hundreds, and the workflow API changed enough between v0.3 and v0.4 that production users had to migrate agent code — worth budgeting for if you adopt early. Apache-2.0 and free to self-host; Mastra Cloud adds paid observability tiers starting around $250/month for teams. Best fit: JS/TS shops that don't want to context-switch into Python for agent work.
What people say
Mastra's growth numbers are the headline: 22,000-plus GitHub stars and over 300,000 weekly npm downloads within roughly a year of public availability, which one write-up called the third-fastest-growing JavaScript framework ever — reaching in twelve months what Gatsby.js took four years to hit, notable partly because Mastra's founders are the team behind Gatsby. Y Combinator backing and named production deployments give it more than a download count: Marsh McLennan (75,000 employees), Replit running thousands of daily agents, SoftBank reaching production about six weeks after adoption, plus PayPal, Adobe, Elastic, Docker and Sanity cited as users.
The honest criticism clusters around maturity rather than direction. A framework review circulating in developer blogs put it plainly: the getting-started docs are solid, but once you move past basic agents, you're reading source code — a fair characterization of a framework whose deepest features, like custom storage adapters and advanced workflow branching, are still light on worked examples. The plugin and integration ecosystem is estimated at 50-60 connectors against LangChain's hundreds, which matters if your stack needs an unusual data source. More concerning for production users: the workflow API had a breaking change between v0.3 and v0.4 that required migrating existing agent code — the kind of churn that's normal pre-1.0 but still a real cost if you shipped early.
On packaging, the core framework is Apache-2.0 licensed and free to self-host anywhere, with no artificial limits on the open-source path. Mastra Cloud, the managed hosting and observability layer, publishes a Starter tier free up to 100K observability events and 24 CPU-hours, a Teams tier at $250/month with SSO and SOC 2 documentation, and custom Enterprise pricing with RBAC, audit logs and dedicated support. Self-hosted enterprise deployments are also available on a flat annual fee instead of per-trace metering, aimed at teams wary of usage-based observability bills.
Summary of public user & expert reviews, compiled by RECATOOLS.
About this listing
This entry was compiled from publicly available data including Mastra's official website, press releases, documentation, and reputable third-party publications. RECATOOLS is not affiliated with Mastra unless explicitly stated.
Third-party AI tools update their pricing, features, availability, and policies frequently. Information here may be outdated by the time you read this — we make reasonable efforts to keep listings current, but cannot guarantee absolute accuracy.
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