GitHub: Replay: Open Source Friday with Mastra

Abhi Aiyer, CTO at Mastra, joins Open Source Friday to talk about building AI applications with TypeScript. Mastra is a TypeScript-first framework for agents, workflows, memory, tools, and MCP. Abhi covers how the project grew out of the Gatsby team's work, demos Mastra Studio with a weather agent, and walks through observability, evals, observational memory, and coding-agent primitives.



0:00 Welcome to Open Source Friday

4:17 Meet Abhi Aiyer

4:59 From Gatsby to Mastra

14:08 create-mastra and Mastra Studio

17:16 Weather agent live demo

19:15 Agent primitives and model router

20:46 Traces and observability

21:45 Scorers, evals, and datasets

31:12 Storage adapters and extensibility

32:30 Memory and observational memory

47:54 Coding agents, skills, and harness

1:00:24 Community and getting started

1:02:53 What's next for Mastra

1:05:06 Wrap-up



Links

Mastra GitHub: https://github.com/mastra-ai/mastra

Mastra Website: https://mastra.ai/

Open Source Friday: https://opensourcefriday.com/



About Open Source Friday

Every Friday, we highlight open source projects and the people building them.