Writing
Notes from building production AI
Harness engineering, agents, evals, guardrails, and working AI-native. Practical, opinionated, and written from the trenches.
The model is not the product. The harness is.
Why most of the real engineering in an AI system lives in the code around the model, and what that code has to do.
Write the evals before you write the prompt
The single habit that separates AI features that improve over time from ones that silently get worse.