//www.martinrichards.me/tags/spec-driven-development/ Recent content in Spec-Driven Development on Martin C. Richards Hugo en Tue, 10 Mar 2026 00:00:00 +0000 //www.martinrichards.me/post/building_your_own_agent_harness/ Tue, 10 Mar 2026 00:00:00 +0000 //www.martinrichards.me/post/building_your_own_agent_harness/ <h1 id="building-your-own-agent-harness">Building Your Own Agent Harness</h1> <p>I&rsquo;ve been trying to write about coding agents for a while. Each time I sit down, the ground has shifted. The models change, my own workflow changes, and whatever I had to say feels stale before I finish saying it.</p> <p>But one thing has stayed constant through all of it: the agents that produce good work are the ones that know how I work. My conventions, my patterns, my preferences. The ones that fail are the ones I drop into a codebase with no context and expect to read my mind. Complaining that an agent wrote bad code without giving it any of that context is like calling a new hire incompetent on their first day because they didn&rsquo;t already know your codebase.</p>