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create-hook

Create or update Codex hooks for global or project scope by asking for scope and hook type when ambiguous, then writing the hook config, scripts, and any required feature flag config.

am-will/codex-skills
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含まれるファイル（3）

  • SKILL.md2.0 KB
  • agents/openai.yaml399 B
  • references/hook-scope.md617 B

SKILL.md（原文）

インストールする前に、エージェントに与えられる指示の中身を確認できます。

Create Hook

Use when the user wants to add Codex hooks and explains the behavior they want.

Workflow

  1. Determine scope.

    • If the user says global, use the personal/home scope.
    • If the user says project, use the repo scope.
    • If scope is missing or unclear, ask: Should this be global or project-scoped?

  2. Determine hook type.

    • If the event is missing or unclear, ask which hook they want:
      • SessionStart
      • UserPromptSubmit
      • PreToolUse
      • PostToolUse
      • Stop
    • If the user wants more than one, keep them separate unless they explicitly want shared behavior.

  3. Determine behavior.

    • Ask what the hook should do if the intent is not already clear.
    • Prefer the smallest deterministic script that satisfies the request.

  4. Write the hook files in the chosen scope.

    • Global: ~/.codex/hooks.json and ~/.codex/hooks/
    • Project: <repo>/.codex/hooks.json and <repo>/.codex/hooks/
    • Keep script paths explicit and relative where practical.

  5. Enable the feature flag if the target Codex build still gates hooks.

    • Set [features] codex_hooks = true in the relevant config.toml.

  6. Keep the hook output clear.

    • Use statusMessage for a short visible signal.
    • For logging hooks, write to a repo-local or home-local log file.
    • For blocking hooks, return a nonzero exit only when the hook should actually stop the tool.

  7. Verify the result.

    • Run a command that should trigger the hook.
    • Confirm the log, output, or blocking behavior matches the requested scope and event.

Practical defaults

  • Use PreToolUse for prevention.
  • Use PostToolUse for logging, formatting, or test follow-up.
  • Use UserPromptSubmit for prompt shaping and injected context.
  • Use SessionStart for startup context.
  • Use Stop for end-of-turn checks.

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