openskills MCP — Cas d'usage, Installer & Démo en direct

Pourquoi l'utiliser

Fonctionnalités clés

Rust runtime — fast, predictable
TS and Python bindings for embedding into any agent
Progressive disclosure: metadata → body → scripts only when needed
Sandboxing via Seatbelt (macOS) and experimental WASM
Cross-agent: not tied to Claude Code

Démo en direct

Aperçu en pratique

openskills-skill.replay ▶ prêt

0/0

Installer

Choisissez votre client

~/Library/Application Support/Claude/claude_desktop_config.json · Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "openskills-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/Geeksfino/openskills",
        "~/.claude/skills/openskills"
      ],
      "_inferred": true
    }
  }
}

Ouvrez Claude Desktop → Settings → Developer → Edit Config. Redémarrez après avoir enregistré.

~/.cursor/mcp.json · .cursor/mcp.json

{
  "mcpServers": {
    "openskills-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/Geeksfino/openskills",
        "~/.claude/skills/openskills"
      ],
      "_inferred": true
    }
  }
}

Cursor utilise le même schéma mcpServers que Claude Desktop. La config projet l'emporte sur la globale.

VS Code → Cline → MCP Servers → Edit

{
  "mcpServers": {
    "openskills-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/Geeksfino/openskills",
        "~/.claude/skills/openskills"
      ],
      "_inferred": true
    }
  }
}

Cliquez sur l'icône MCP Servers dans la barre latérale Cline, puis "Edit Configuration".

~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "openskills-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/Geeksfino/openskills",
        "~/.claude/skills/openskills"
      ],
      "_inferred": true
    }
  }
}

Même format que Claude Desktop. Redémarrez Windsurf pour appliquer.

~/.continue/config.json

{
  "mcpServers": [
    {
      "name": "openskills-skill",
      "command": "git",
      "args": [
        "clone",
        "https://github.com/Geeksfino/openskills",
        "~/.claude/skills/openskills"
      ]
    }
  ]
}

Continue utilise un tableau d'objets serveur plutôt qu'une map.

~/.config/zed/settings.json

{
  "context_servers": {
    "openskills-skill": {
      "command": {
        "path": "git",
        "args": [
          "clone",
          "https://github.com/Geeksfino/openskills",
          "~/.claude/skills/openskills"
        ]
      }
    }
  }
}

Ajoutez dans context_servers. Zed recharge à chaud à la sauvegarde.

claude mcp add openskills-skill -- git clone https://github.com/Geeksfino/openskills ~/.claude/skills/openskills

Une seule ligne. Vérifiez avec claude mcp list. Supprimez avec claude mcp remove.

Cas d'usage

Usages concrets : openskills

How to embed Agent Skills into your own agent runtime

👤 Engineers building custom LLM agents ⏱ ~120 min advanced

Quand l'utiliser : You're writing an agent from scratch and want a skill system that already understands SKILL.md.

Prérequis

Rust toolchain (for building) or prebuilt binding — rustup install stable; or use the TS/Python binding
Repo cloned — git clone https://github.com/Geeksfino/openskills ~/.claude/skills/openskills

Déroulement

Install the binding

Install the openskills Python or TS binding and point it at my skills directory.✓ Copié

→ Runtime loaded; skills enumerated
Expose to your agent

Wire the runtime into my agent's planner so it considers skills at each step.✓ Copié

→ Agent has a SkillRegistry abstraction
Run sandboxed

Enable Seatbelt sandboxing for skill scripts on macOS.✓ Copié

→ Skill scripts run under sandbox profile

Résultat : Your custom agent can load and run SKILL.md bundles like Claude Code does.

Pièges

Loading all scripts at startup kills memory — Rely on progressive disclosure — metadata first
Sandbox denies legitimate operations — Audit the sandbox profile; narrow-then-widen rather than default-deny everything

Combiner avec : filesystem

Run a skill in isolation to test it outside Claude Code

👤 Skill authors who want cross-agent validation ⏱ ~45 min intermediate

Quand l'utiliser : You want to prove your skill works without the specific harness of Claude Code.

Déroulement

Load the skill

Load ~/.claude/skills/my-skill/ with openskills and print its metadata.✓ Copié

→ Parsed frontmatter + body
Invoke with a prompt

Feed it a sample task and observe what would get loaded.✓ Copié

→ Disclosure trace: what the agent would see

Résultat : Confidence your skill behaves portably.

Pièges

Skill depends on Claude Code internals — Refactor the skill to rely only on the public SKILL.md interface

Combinaisons

Associez-le à d'autres MCPs pour un effet X10

openskills-skill + skill-optimizer-skill

Validate skills portably before optimizing them

Load the skill with openskills, then hand off to skill-optimizer for patch suggestions.✓ Copié

openskills-skill + filesystem

Operate on the skills directory directly

List all SKILL.md in ~/.claude/skills/, summarize each.✓ Copié

Outils

Ce que ce MCP expose

Outil	Entrées	Quand appeler	Coût
skill-loader	skills dir	Agent startup	minimal
progressive-disclosure	skill id + stage	During agent reasoning	minimal
sandbox-runner	script + policy	Any time a skill spawns a subprocess	script runtime

Coût et limites

Coût d'exécution

Quota d'API: none
Tokens par appel: runtime is prompt-light; you control what's disclosed
Monétaire: free, open source
Astuce: Keep progressive disclosure on — loading every script upfront blows context

Sécurité

Permissions, secrets, portée

Stockage des identifiants : none at runtime level

Sortie de données : none beyond what scripts themselves do

WASM sandboxing is experimental — don't rely on it for adversarial scripts
Seatbelt profiles should be tightened per your use case

Dépannage

Erreurs courantes et correctifs

Binding import fails

Ensure the native binary matches your platform; rebuild from source if needed.

Sandbox blocks expected syscalls

Iterate on the Seatbelt profile; log denials to find the right allow list.

Alternatives

openskills vs autres

Alternative	Quand l'utiliser	Compromis
Claude Code native skill loader	You're only running inside Claude Code	No cross-agent portability

Plus

Ressources

📖 Lire le README officiel sur GitHub

🐙 Voir les issues ouvertes

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