validate-skills

par callstackincubator

Valide les compétences par rapport à la spécification agentskills.io et aux bonnes pratiques de Claude Code. Vérifie la conformité des métadonnées des compétences, notamment le format du nom, la longueur de la description et les champs facultatifs comme la licence et la compatibilité. Applique les bonnes pratiques de Claude Code : descriptions à la troisième personne, limites de longueur du corps, références à un seul niveau et formatage des liens en markdown. Fournit des rapports de validation structurés signalant les violations de spécification et les écarts par rapport aux directives de rédaction. Conçu pour être utilisé via la commande /validate-skills dans un...

npx skills add https://github.com/callstackincubator/agent-skills --skill validate-skills

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Validate Skills

Validate all skills in skills/ against the agentskills.io spec and Claude Code best practices.

Validation Checklist

For each skill directory, verify:

Spec Compliance (agentskills.io)

Check	Rule
`name` format	1-64 chars, lowercase alphanumeric + hyphens, no leading/trailing/consecutive hyphens
`name` matches directory	Directory name must equal `name` field
`description` length	1-1024 characters, non-empty
Optional fields valid	`license`, `metadata`, `compatibility` if present

Best Practices (Claude Code)

Check	Rule
Description format	Third person, describes what + when to use
Body length	Under 500 lines
Loading is one-level deep	`SKILL.md` is the only progressive-disclosure entry point: every reference file must be reachable from `SKILL.md`. References may cross-link each other for navigation (see note below).
Links are markdown	Use `[text](path)` not bare filenames
No redundancy	Don't repeat description in body
Concise	Only add context Claude doesn't already have

One-level-deep vs. cross-linking. The one-level-deep rule targets progressive-disclosure loading chains — a reference that can only be discovered by loading another reference first (SKILL.md → a.md → b.md, where b.md is not linked from SKILL.md). That is a defect: it hides content from the loader.

It does not forbid navigational cross-links. Per AGENTS.md, reference files end with a "Related Skills" footer linking sibling references, and this is required. A cross-link is fine as long as both endpoints are also reachable directly from SKILL.md. Only flag a reference that is reachable exclusively through another reference.

How to Run

Find all skill directories:
```
fd -t d -d 1 . skills/
```
For each skill, read SKILL.md and check against the rules above

Report issues in this format:

## Validation Results

### skills/example-skill
- [PASS] name format valid
- [FAIL] name "example" doesn't match directory "example-skill"
- [PASS] description length OK (156 chars)