Simon Willison’s Weblog
If the agent isn't using my diagnostics library, I could introspect and update AGENTS.md, but there's still a delta, and it'll drift. Instead, I write a pre-commit hook that checks the git diff for direct calls to observability modules that bypass my diagnostics module. Boom: fail the commit, inject a prompt telling the agent to use the diagnostics library. All of a sudden it's ten out of ten.
— Geoffrey Huntley , nobody should type code by hand anymore. here's what's left.
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This is a quotation collected by Simon Willison, posted on 13th October 2026 .