Rules

Use when the user asks about Codex Rules behavior, injected project rules, supported rule file locations, matching, or environment configuration.

majiayu000 b1c27c4 2 files · 2.5 KB Updated 567 repo stars

File contents

Codex Rules

Codex Rules is automatic once the plugin is enabled. It injects:

  • static project instructions on SessionStart and UserPromptSubmit
  • matching file-specific rules after Codex apply_patch by default

Dynamic PostToolUse output is injected as additional context and is deduplicated per plugin data session. Codex Rules does not rewrite tool output.

Supported project sources:

  • CONTEXT.md
  • .omo/rules/**/*.md
  • .claude/rules/**/*.md
  • .cursor/rules/**/*.md
  • .github/instructions/**/*.md
  • .github/copilot-instructions.md

Supported environment knobs:

  • CODEX_RULES_DISABLED=1
  • CODEX_RULES_MODE=both|static|dynamic|off
  • CODEX_RULES_MAX_RULE_CHARS=<number>
  • CODEX_RULES_MAX_RESULT_CHARS=<number>
  • CODEX_RULES_ENABLED_SOURCES=CONTEXT.md,.omo/rules

The legacy PI_RULES_* variables are accepted as fallbacks for users migrating from pi-rules.

majiayu000/claude-skill-registry-data/tree/main/other/rules commit b1c27c4c95

Frequently asked questions

npx skillmds add majiayu000/rules