Full series

Building Your Own Coding Agent

Coding agents look mysterious until you build one. Everything here grows from the same primitive: send messages, run tools, append results, and loop.

01The Smallest Coding Agent Loop5 min read 02Tools Are The Model's Hands13 min read 03The Harness Decides What Happens16 min read 04The Workspace Is The Agent's World13 min read 05Permissions Are Product Design8 min read 06Turning The Loop Into A CLI10 min read 07Project Context Is A Tool9 min read 08Memory Is External State11 min read 09Context Management Is Compression11 min read 10Testing The Harness Without A Model6 min read 11Evals Measure Agent Behavior9 min read 12Loop Engineering: The System That Prompts The AgentComing soon