A pre-commit hook fails commits that bypass his diagnostics library and injects a prompt steering the agent to use it instead.

What the research found

Geoffrey Huntley describes a pre-commit hook that fails commits bypassing his diagnostics library and injects a prompt steering the agent to use it instead.

Claims and how well the evidence supports them

1. Geoffrey Huntley uses a pre-commit hook that fails commits bypassing his diagnostics module 95%
2. The hook injects a prompt telling the agent to use the diagnostics library 98%

Evidence

• simonwillison.net https://simonwillison.net/2026/Oct/13/geoffrey-huntley

Actionability rated low.