AI Agent Platform - Mastra

About

Mastra is the open-source TypeScript framework that finally gives JavaScript developers a first-class way to build, test, and ship AI agents. From the team behind Gatsby, it comes loaded with everything production requires: memory, workflows, tool use, evals, tracing, and MCP support. Over 22,000 GitHub stars and millions of monthly downloads later, Mastra has become the go-to agent stack for teams at Replit, PayPal, and beyond.