Software Engineering Daily Building AI Agents on the Frontend with Sam Bhagwat and Abhi Aiyer
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Oct 30, 2025 
Sam Bhagwat, Co-founder and CEO of Mastra, and Abhi Aiyer, Co-founder and CTO, dive deep into the world of AI agents designed for frontend developers. They tackle the challenges of building full-stack AI applications using TypeScript, highlighting Mastra's tools and workflows. They discuss unique use cases, such as CAD generation and industry-specific vertical agents. With insights on developer experience and a roadmap for future features, they offer practical advice for aspiring AI engineers eager to innovate in this rapidly evolving space.
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From Failed CRM To Mastra
- Sam and Abhi built an internal CRM called Kepler and struggled implementing AI features with existing TypeScript libraries.
- After nine months they scrapped the CRM and decided to build Mastra to fill the tooling gaps they encountered.
Prefer TypeScript For Frontend AI Tooling
- Use TypeScript for AI tooling if your team and frontend stack are JavaScript/TypeScript to reduce friction and speed iteration.
- Build tooling where developers are comfortable instead of forcing a Python stack when unnecessary.
Mastra Provides Composable Agent Primitives
- Mastra is a TypeScript framework that provides agents, tools, workflows, RAG, memory, and a dev playground as composable primitives.
- It targets both building agentic features inside SaaS apps and creating standalone verticalized agents for industries.
