AGENTS.md working agreement: run tests after edits
Example from OpenAI's guide: 'Always run npm test after modifying JavaScript files.' Advisory only, so pair it with a gate.
proof: tests run count blocks: edits shipped without a test run
Source
https://developers.openai.com/codex/guides/agents-mdChecked 2026-10-16. Read the original before installing.
By harness
| Harness | Status | How |
|---|---|---|
| Cursor | adapted | Cursor reads AGENTS.md. |
| Claude Code | adapted | Import AGENTS.md from CLAUDE.md. |
| Grok Build | native | Grok reads AGENTS.md. |
| Codex | native | ~/.codex/AGENTS.md or repo AGENTS.md. |
| AGENTS.md generic | native | Plain AGENTS.md. |
By model family
| Claude | untested |
| GPT | source |
| Grok | untested |
| Gemini | untested |
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Proof of the week
One verification pattern every week, adapted per harness and model. No spam.