Geoffrey Huntley blocks agents from bypassing diagnostics library with Git hooks
Software engineer Geoffrey Huntley shared a technical approach to enforce the use of his diagnostics library in code. Instead of relying on agent introspection, which can drift over time, he implemented a pre-commit Git hook. This hook checks for direct calls to observability modules that bypass his diagnostics module. If such calls are detected, the commit fails and injects a prompt instructing…
Key points
- Huntley uses a pre-commit Git hook to detect bypasses of his diagnostics library
- Failing commits inject a prompt to use the diagnostics library instead
- Method achieves a perfect score of ten out of ten for compliance
Huntley’s method ensures compliance with his preferred code structure, achieving a perfect score of ten out of ten. The solution leverages Git’s built-in tools to automate enforcement, reducing manual oversight. His post highlights the challenges of managing agent behavior in codebases and offers a pragmatic workaround for developers.
Quoting Geoffrey Huntley
Simon Willison · 13 October 2026Loading the full article…
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