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Check native Codex skill directories, SKILL.md routing metadata, OpenAI UI metadata, and referenced resources. Use before publishing, installing, or changing any Codex skill.
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
SOC 職業分類に基づく
Start here for the nddev-builder toolkit. Indexes the Codex artifact families and the creator, checker, reviewer, and workflow skill that owns each, points at the single reference for schemas and current (Beta, experimental, or under-development) surfaces, and routes the task to the right skill. Use first whenever building, checking, reviewing, or releasing a Codex artifact, or when unsure which builder skill applies.
A guided first run of the nddev-builder toolkit — from zero to a working, checked Codex artifact in ordered steps. Use when new to nddev-builder, onboarding, or unsure which builder skill to start with.
Create or revise a Codex marketplace catalog with valid plugin sources, categories, installation policy, and authentication policy. Use when publishing local or remote plugin collections.
Check a managed Codex requirements.toml layer for supported keys, permission-profile consistency, and a valid lower-layer default. Use before delivering managed /etc/codex or MDM requirements.
Create a managed Codex requirements.toml layer that constrains permission profiles and other admin policy. Use when authoring the /etc/codex or MDM-delivered managed requirements a lower config layer must satisfy.
Install and iterate on a Codex plugin locally in developer mode: the install, reinstall, and cachebuster test loop for a plugin under development, run against an isolated install and never live state. Use when running or iterating on a plugin, its skills, MCP, hooks, or bundled app locally.
| name | codex-skill-checker |
| description | Check native Codex skill directories, SKILL.md routing metadata, OpenAI UI metadata, and referenced resources. Use before publishing, installing, or changing any Codex skill. |
Resolve every ../../scripts and ../../references path relative to this SKILL.md directory, never the caller working directory.
Validate a skill structurally, then review whether it will route and execute well in real Codex work.
Locate the complete skill directory and read ../../references/codex-artifact-contracts.md.
Run the deterministic checker:
python3 ../../scripts/check_codex_artifact.py skill .agents/skills/example-skill
Confirm the directory and frontmatter names match, the description says what and when, and no unsupported frontmatter keys exist.
Check agents/openai.yaml for concise UI metadata and a default prompt that explicitly mentions the skill.
Follow every local reference to scripts/, references/, assets/, or agents/; fail broken, escaping, or unsafe links.
Review progressive disclosure: keep routing and core workflow in SKILL.md and detailed facts in referenced files.
Test one explicit $skill-name request and one realistic implicit-routing request when a Codex runtime is available.
Return PASS only when deterministic and semantic checks succeed. Otherwise return FAIL with path, finding, impact, and the smallest corrective action. Never rewrite the skill unless asked.