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SkillCheck-Free

por olgasafonova · olgasafonova/SkillCheck-Free

Validates Claude Code skills against the open agentskills spec — structure, body, naming, semantics, quality patterns — Critical / Warning / Suggestion.

olgasafonova/SkillCheck-Free is a spec-compliance linter for Agent Skills. Free tier covers: 1.x Structure (YAML frontmatter, name validity, description quality, XML injection), 2.x Body (length, hardcoded dates, empty sections, unqualified MCP refs), 3.x Naming (generic names, verb-noun), 4.x Semantic (conflicting instructions, vague terms, unspecified outputs), 8.x Quality patterns (examples, error handling, triggers), 19.x Design pattern classification, 22.x Knowledge density. Severity tiers: Critical / Warning / Suggestion / Strength.

Por que usar

Principais recursos

Demo ao vivo

Como fica na prática

skillcheck-free-skill.replay ▶ pronto
0/0

Instalar

Escolha seu cliente

~/Library/Application Support/Claude/claude_desktop_config.json  · Windows: %APPDATA%\Claude\claude_desktop_config.json
{
  "mcpServers": {
    "skillcheck-free-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/olgasafonova/SkillCheck-Free",
        "~/.claude/skills/SkillCheck-Free"
      ],
      "_inferred": true
    }
  }
}

Abra Claude Desktop → Settings → Developer → Edit Config. Reinicie após salvar.

~/.cursor/mcp.json · .cursor/mcp.json
{
  "mcpServers": {
    "skillcheck-free-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/olgasafonova/SkillCheck-Free",
        "~/.claude/skills/SkillCheck-Free"
      ],
      "_inferred": true
    }
  }
}

Cursor usa o mesmo esquema mcpServers que o Claude Desktop. Config de projeto vence a global.

VS Code → Cline → MCP Servers → Edit
{
  "mcpServers": {
    "skillcheck-free-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/olgasafonova/SkillCheck-Free",
        "~/.claude/skills/SkillCheck-Free"
      ],
      "_inferred": true
    }
  }
}

Clique no ícone MCP Servers na barra lateral do Cline, depois "Edit Configuration".

~/.codeium/windsurf/mcp_config.json
{
  "mcpServers": {
    "skillcheck-free-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/olgasafonova/SkillCheck-Free",
        "~/.claude/skills/SkillCheck-Free"
      ],
      "_inferred": true
    }
  }
}

Mesmo formato do Claude Desktop. Reinicie o Windsurf para aplicar.

~/.continue/config.json
{
  "mcpServers": [
    {
      "name": "skillcheck-free-skill",
      "command": "git",
      "args": [
        "clone",
        "https://github.com/olgasafonova/SkillCheck-Free",
        "~/.claude/skills/SkillCheck-Free"
      ]
    }
  ]
}

O Continue usa um array de objetos de servidor em vez de um map.

~/.config/zed/settings.json
{
  "context_servers": {
    "skillcheck-free-skill": {
      "command": {
        "path": "git",
        "args": [
          "clone",
          "https://github.com/olgasafonova/SkillCheck-Free",
          "~/.claude/skills/SkillCheck-Free"
        ]
      }
    }
  }
}

Adicione em context_servers. Zed recarrega automaticamente ao salvar.

claude mcp add skillcheck-free-skill -- git clone https://github.com/olgasafonova/SkillCheck-Free ~/.claude/skills/SkillCheck-Free

Uma linha só. Verifique com claude mcp list. Remova com claude mcp remove.

Casos de uso

Usos do mundo real: SkillCheck-Free

Validate your skill before publishing it to a catalog

👤 Skill authors ⏱ ~20 min beginner

Quando usar: Before opening a PR to awesome-claude-skills or anthropics/skills.

Pré-requisitos
  • Skill cloned — git clone https://github.com/olgasafonova/SkillCheck-Free ~/.claude/skills/SkillCheck-Free
Fluxo
  1. Run SkillCheck on your SKILL.md
    Use SkillCheck-Free — validate ~/my-skill/SKILL.md against the agentskills spec.✓ Copiado
    → Per-rule findings with severities
  2. Fix Critical issues
    Walk me through each Critical finding and propose a fix.✓ Copiado
    → Concrete edits, not 'improve clarity'
  3. Re-run until clean
    Re-validate. Anything still Critical or Warning?✓ Copiado
    → Progress toward zero Critical

Resultado: A skill that won't be rejected for trivial spec violations.

Armadilhas
  • Chasing every Suggestion — Suggestions are aspirational; Critical + Warning is the bar for most catalogs

Audit every skill you've installed for quality concerns

👤 Skill hoarders who want to prune ⏱ ~30 min intermediate

Quando usar: You installed 20 skills and aren't sure which ones are well-made.

Fluxo
  1. Batch validate
    SkillCheck-Free — run validation across every SKILL.md under ~/.claude/skills/. Rank by Critical count.✓ Copiado
    → Per-skill report with priorities
  2. Decide what to keep
    Which skills have persistent Critical issues I should uninstall?✓ Copiado
    → Prioritized uninstall candidates

Resultado: A leaner, higher-quality skill collection.

Combinações

Combine com outros MCPs para 10× de alavancagem

skillcheck-free-skill + skills-skill-8

Cross-check: SkillCheck validates spec, huangwb8/auto-test-skill tests robustness

Run SkillCheck first for spec issues, then auto-test-skill for design weaknesses.✓ Copiado
skillcheck-free-skill + awesome-claude-skill-2

Validate before submitting your skill to the catalog

SkillCheck my SKILL.md, then if clean, draft the awesome-claude-skills PR.✓ Copiado

Ferramentas

O que este MCP expõe

FerramentaEntradasQuando chamarCusto
validate_skill path to SKILL.md Pre-publish or post-install 0
classify_pattern skill body Understanding how a skill fits your collection 0
batch_validate directory of skills Fleet-wide audit 0

Custo e limites

O que custa rodar

Cota de API
None
Tokens por chamada
Small — typical SKILL.md is <10k tokens
Monetário
Free tier only; Pro tier exists for deeper pattern validation
Dica
Free tier is sufficient for most authoring — upgrade only if you publish commercially.

Segurança

Permissões, segredos, alcance

Armazenamento de credenciais: No credentials — pure prompts
Saída de dados: None — validation is local

Solução de problemas

Erros comuns e correções

Skill not invoked — Claude gives generic review

Say 'use SkillCheck-Free' explicitly.

Verificar: ls ~/.claude/skills/SkillCheck-Free/SKILL.md
SKILL.md frontmatter wrong in target skill

Expected — that's the finding SkillCheck exists to surface. Fix the frontmatter and re-run.

Verificar: head <target>/SKILL.md
Wrong trigger keywords — SkillCheck runs but misses severity tier

Ask explicitly for 'severity-tiered output'; default may compress.

Alternativas

SkillCheck-Free vs. outros

AlternativaQuando usarTroca
skills-skill-8 auto-test-skillYou want design robustness testing, not spec complianceComplementary — run both
Manual reviewYou've written many skills and have internalized the specNo machine backstop for subtle issues

Mais

Recursos

📖 Leia o README oficial no GitHub

🐙 Ver issues abertas

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