Mastra createAgent: TypeScript AI Agents in 5 Minutes

Mastra hit 1.0 in January 2026 and crossed 22k GitHub stars by April. If you live in TypeScript and you have been jealous of the Python agent ecosystem, this is the framework that closes the gap. In the next 5 minutes you will scaffold a project, define a typed tool, give an LLM access to it, and watch the agent reason its way to an answer.

By the end you will know how createAgent, createTool, and Zod schemas fit together — and why Mastra Studio (the built-in dev UI) is the fastest feedback loop in the agent world right now.