while True: Break Production Your agent loop fits on a whiteboard. Then it grows to 3,000 lines and you understand why.

So You Want to Build Your Own Claude Code Seven layers of a code agent, from the system prompt to the Seatbelt sandbox. A year of evenings, condensed.

Guess First, Verify Later Speculative decoding gets you 2-3x LLM throughput with zero quality loss. The trick: verification is almost free.

Computer Use Is a Human Wearing Oven Mitts I built computer use into a production agent, then largely moved away from it. Here is why pixels are the wrong primitive.

Three Architectures I Tried Before My Browser Agent Stopped Crashing From WebSocket spaghetti to Native Messaging to DOM-first. A tour of everything that broke along the way.