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About

I'm Casey Hand, a senior software engineer in Seattle. I build open-source Model Context Protocol servers in TypeScript — a framework, @cyanheads/mcp-ts-core, and around 70 servers built on it, many of them publicly hosted.

This is where I write about that work: build notes, design decisions, and explainers — sometimes with interactive diagrams when a static one won't do. I'm currently open to work in AI/LLM tooling and infrastructure.