Mastra
YC W25San Francisco, US · Founded 2024 · 30 employees · 4 known investors
Mastra is an open-source TypeScript framework for building AI agents. The platform serves developers and teams building agent-based applications.
AI & Machine LearningDeveloper ToolsEnterprise SoftwareArtificial IntelligenceOpen SourceAIin /mastra-ai/@mastra_ai
Founders & leadership· Y Combinator alumni (W25)
Investors · 4
In the news
- npm Supply Chain Attack: North Korea Hits Mastra AI [2026]tech-insider.org · 2026
- We raised a $22M Series A to help every developer build agents - Mastra Blogmastra.ai · 2026
- Mastra Raises $13M Seed for TypeScript AI Frameworktechnews180.com · 2025
- Announcing our $13m seed round from YC, pg, Gradient, Amjad, Guillermo, Balaji, and 120+ others | Mastra Blogmastra.ai · 2025
- Mastra - 2026 Funding Rounds & List of Investors - Tracxntracxn.com · 2025
- Who Funded Mastra? — Investors & Funding History | Billion Dollar Pitch Decksbilliondollarpitchdecks.com