Blog

Writing, notes, and technical references I keep coming back to.

Building a Coding Agent Harness From First Principles

April 2, 2026

a coding agent is a stateful control loop, not a chat request. How I’d design the harness—loop, context pipeline, scheduling, and permissions—so it can run for hours without corrupting state.

When Horizontal Scaling Hits Rate Limits

March 23, 2026

More instances can make 429s worse when upstream quotas are global. How we reframed it as a coordination problem — queue, global limiter, and throughput shaping instead of scaling alone.