Mastra raises $22M
Mastra announced a Series A round of $22M on 9 April 2026. The company operates in Developer Tools and is based in United States. It was founded by Sam Bhagwat, CEO & Co-founder.
Founder
Sam Bhagwat
CEO & Co-founder, Mastra
Outreach angles
- -Bhagwat previously co-founded Gatsby.js, one of the most widely adopted open-source React frameworks, before building Mastra on the same principle of developer-first tooling.
- -He has publicly written about the shift from deterministic software to probabilistic AI systems and how that changes what developer infrastructure needs to look like.
- -With $22M from Spark Capital and $35M total raised, Mastra is now hiring across engineering and developer relations as it cements its position as the default TypeScript framework for building production AI agents.
Signals
Series ADev ToolsAI-NativeOpen SourceAPI-FirstB2BHiring
Round details
Company: Mastra
Domain: mastra.ai
Amount: $22M
Stage: Series A
Industry: Developer Tools
Country: United States
Announced: 9 April 2026
Other Developer Tools raises
Recently funded in United States