kaiyin.zhong

Writing

Essays

Things I have learned. Things I built, broke, and eventually figured out.

  1. An MCP server is a protocol you can read Jul 7, 2026 · 10 min Build an MCP server in ~380 lines of Rust with no SDK: a wiretap whose only tool returns the raw JSON-RPC of its own session — handshake, negotiation, and the request that asked for it. llmops · rust · tutorial
  2. Snake, React-style, in your terminal Jun 29, 2026 · 14 min A complete snake game in one Rust file: signals for state, use_input for steering, an alternate screen for the arena, and a 200ms tick loop you own yourself. React patterns, zero JavaScript. rust · tui · tutorial