\n\nIf 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.
\n
— Geoffrey Huntley, nobody should type code by hand anymore. here's what's left.
\nPosted 13th October 2026 at 1:32 pm
\nThis is a quotation collected by Simon Willison, posted on 13th October 2026.
\ngit 58 ai 2,285 generative-ai 2,027 llms 1,993 coding-agents 259 geoffrey-huntley 4 agentic-engineering 67
\n", "content_markdown": "> 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.\n\n— [Geoffrey Huntley](https://ghuntley.com/agency/), nobody should type code by hand anymore. here's what's left.\n\nPosted [13th October 2026](https://simonwillison.net/2026/Oct/13/) at 1:32 pm\n\n## Recent articles\n\n- [Hello Python 3.15, goodbye 3.10, and now I can use 3.11](https://simonwillison.net/2026/Oct/12/python-3-15/) - 12th October 2026\n- [A new feature for my blog, built using my voice](https://simonwillison.net/2026/Oct/9/built-using-my-voice/) - 9th October 2026\n- [Claude Haiku 5.5](https://simonwillison.net/2026/Oct/7/claude-haiku-5-5/) - 7th October 2026\n- [We're going to need default hard budget caps on pretty much everything](https://simonwillison.net/2026/Oct/3/default-hard-budget-caps/) - 3rd October 2026\n\nThis is a **quotation** collected by Simon Willison, posted on [13th October 2026](https://simonwillison.net/2026/Oct/13/).\n\n[git 58](https://simonwillison.net/tags/git/) [ai 2,285](https://simonwillison.net/tags/ai/) [generative-ai 2,027](https://simonwillison.net/tags/generative-ai/) [llms 1,993](https://simonwillison.net/tags/llms/) [coding-agents 259](https://simonwillison.net/tags/coding-agents/) [geoffrey-huntley 4](https://simonwillison.net/tags/geoffrey-huntley/) [agentic-engineering 67](https://simonwillison.net/tags/agentic-engineering/)\n", "dateCreated": "2026-10-13T18:08:43.541012300+00:00", "date_created": "2026-10-13T13:32:00+00:00", "date_modified": "2026-10-13T13:32:00+00:00", "date_published": "2026-10-13T13:32:00+00:00", "description": "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…", "external_url": "https://simonwillison.net/2026/Oct/13/geoffrey-huntley/", "git": { "commit": "ebb0941c5c06a2ab2377342d607535262a3e969e", "path": "items/simonwillison-net/2026/10/2026-10-13-quoting-geoffrey-huntley.md", "permalink": "https://github.com/aymericbeaumet/aggr-instance/blob/ebb0941c5c06a2ab2377342d607535262a3e969e/items/simonwillison-net/2026/10/2026-10-13-quoting-geoffrey-huntley.md" }, "id": "urn:aggr:item:903c3c9c66f0e63683b77c2cb42d0fed3d8db61d", "isBasedOn": { "@id": "https://simonwillison.net/2026/Oct/13/geoffrey-huntley/" }, "mainEntity": { "@id": "https://simonwillison.net/2026/Oct/13/geoffrey-huntley/", "@type": "CreativeWork", "archivedAt": { "@id": "https://aggr.aymericbeaumet.com/items/simonwillison-net/2026-10-13-quoting-geoffrey-huntley/#webpage" }, "dateModified": "2026-10-13T13:32:00+00:00", "datePublished": "2026-10-13T13:32:00+00:00", "headline": "Quoting Geoffrey Huntley", "timeRequired": "PT1M", "url": "https://simonwillison.net/2026/Oct/13/geoffrey-huntley/", "wordCount": 170 }, "name": "Archived snapshot: Quoting Geoffrey Huntley", "preview": null, "reading_minutes": 1, "replicated_at": null, "source": "simonwillison-net", "source_name": "Simon Willison's Weblog", "summary": "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. Tags: coding-agents, generative-ai, git, agentic-engineering, ai, geoffrey-huntley, llms", "tags": [ "agentic-engineering", "ai", "coding-agents", "generative-ai", "geoffrey-huntley", "git", "llms" ], "temporalCoverage": "2026-10-13T18:08:43.541012300+00:00", "title": "Quoting Geoffrey Huntley", "url": "https://aggr.aymericbeaumet.com/items/simonwillison-net/2026-10-13-quoting-geoffrey-huntley/", "word_count": 170 }