Maintains project .codex/rules and the AGENTS.md rule index. Explicit user invocation only.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Codex project rules
Use only when the user explicitly requests rule creation, synchronization, improvement, review, or inventory.
## Sources of truth
- Store rule bodies under the project `.codex/rules/`; never use personal or foreign-assistant rule paths.
- Treat hierarchical `AGENTS.md` files as Codex's automatically loaded instruction surface.
- Keep rule content in one file. `AGENTS.md` contains a compact index, not copied rule bodies.
## Modes and arguments
Position 1 of the arguments is a free-form prompt (RU/EN); mode tokens are optional and may follow. Resolve the mode from that prompt: `status` (default, read-only inventory), `list`, `create`, `improve`, `review`. An explicit mode token wins outright; otherwise take the mode the prompt describes, and ask at most one clarifying question, only when the answer changes what gets written.
Before the first write — and before the report on a read-only run — state in one block: the input verbatim, the resolved mode and why, the scope (rule files and `AGENTS.md` tables in play), what will be done, and the result the user ends up with.
## Workflow
…
The line at the top of this page pins the label git:20260930.2f50853, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
GET https://markdownregistry.com/api/v1/artifacts/art_cruibbnjr4djoduq
GET https://markdownregistry.com/api/v1/resolve?ref=kochetkov-ma/claude-brewcode/rules
GET https://markdownregistry.com/api/v1/blob/01e2e9169e863f498a33517929edb59770fbacb41ef01a9d36fc6160850ce58b
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
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