Mastra Ships Full Platform with Agent Editor, Raises $22M Series A Led by Spark Capital

Mastra Blog·medium signal

Mastra launched its full platform for developing, running, and monitoring TypeScript agents at scale, including Mastra Studio (evals, traces, metrics), Mastra Server (deployment), and Memory Gateway. The new Agent Editor lets non-engineers iterate on agent behavior without code or redeployment. Mastra raised $22M Series A led by Spark Capital ($35M total), has 22,000+ GitHub stars and 300,000+ weekly npm downloads.