by Mastra (ex-Gatsby team)
Mastra
Open-source TypeScript framework for building, testing, and deploying AI agents and multi-agent workflows — from prototype to production.
Mastra is a TypeScript-native AI agent framework built by the team behind Gatsby. It provides everything needed to build production-grade agents: autonomous agents with tool use, deterministic multi-step workflows, RAG pipelines, persistent memory, evaluation frameworks, and built-in MCP support. Routes across 3,300+ models from 94 providers. Supervisor pattern for multi-agent orchestration. Workspaces give agents filesystem and sandbox access. Platform tiers: Starter (free, unlimited users/deployments), Teams ($250/mo, multiple teams + SOC 2 docs), Enterprise (custom). 23,100 GitHub stars, 300+ contributors, 300,000 weekly npm downloads. Apache 2.0 licensed.
Capabilities
Pros & Limitations
Editorial assessmentPros
- ✓TypeScript-native — no Python required
- ✓3,300+ models from 94 providers via unified router
- ✓Built-in MCP support, memory, evals, and observability
- ✓Supervisor pattern for multi-agent orchestration
- ✓23,100 GitHub stars, 300K weekly npm downloads
- ✓Apache 2.0 — truly permissive commercial license
Limitations
- ⚠TypeScript only — not suitable for Python-first teams
- ⚠Enterprise features require paid license (ee/ directory)
- ⚠Smaller integration surface than LangChain ecosystem
Technical Details
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