I’m Leo, a 15-year-old founder & developer in Florida. I ship SDKs, apps, tools, benchmarks, and whatever else seems worth building that week. Also a cat person.

Right now I’m an intern at Mastra, the TypeScript AI agent framework. I also run Sandbox bench and Scraping bench, which measure cloud sandboxes and scraping APIs for AI agents, and I write a free lesson every Tuesday at lessons.sh.

My DMs are open on X. Reach out any time. And feel free to sponsor my open-source work at OpenCore.