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Newsletter

One essay a week. From inside the build.

Long-form writing about shipping AI in regulated stacks — eval harnesses, kill switches, fraud rules, and the boring infrastructure work that decides whether an AI feature survives production.

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Most "AI agents" aren't agents

An agent decides what to do next based on the current state. A pipeline runs what was decided in advance. Most things called 'AI agents' today are pipelines — and the mislabel drives every downstream tooling mistake, including mine.

Stop writing PRDs for AI features

Traditional PRD-first workflows break on AI products because the behavior is probabilistic and the spec can't precede the code. The fix is to flip the order — ship the POC first, let the PM define product against running behavior, and treat the prototype itself as the spec.