agent-skills-nix MCP — Cas d'usage, Installer & Démo en direct

Pourquoi l'utiliser

Fonctionnalités clés

Declarative: skills defined in flake.nix or Home Manager module
Reproducible across machines — same lock, same skills
Pins skills to a specific git rev for stability
Plays nicely with Home Manager
No more 'works on my laptop' skill drift

Démo en direct

Aperçu en pratique

agent-skills-nix-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": {
    "agent-skills-nix-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/Kyure-A/agent-skills-nix",
        "~/.claude/skills/agent-skills-nix"
      ],
      "_inferred": true
    }
  }
}

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

~/.cursor/mcp.json · .cursor/mcp.json

{
  "mcpServers": {
    "agent-skills-nix-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/Kyure-A/agent-skills-nix",
        "~/.claude/skills/agent-skills-nix"
      ],
      "_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": {
    "agent-skills-nix-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/Kyure-A/agent-skills-nix",
        "~/.claude/skills/agent-skills-nix"
      ],
      "_inferred": true
    }
  }
}

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

~/.codeium/windsurf/mcp_config.json

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

Même format que Claude Desktop. Redémarrez Windsurf pour appliquer.

~/.continue/config.json

{
  "mcpServers": [
    {
      "name": "agent-skills-nix-skill",
      "command": "git",
      "args": [
        "clone",
        "https://github.com/Kyure-A/agent-skills-nix",
        "~/.claude/skills/agent-skills-nix"
      ]
    }
  ]
}

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

~/.config/zed/settings.json

{
  "context_servers": {
    "agent-skills-nix-skill": {
      "command": {
        "path": "git",
        "args": [
          "clone",
          "https://github.com/Kyure-A/agent-skills-nix",
          "~/.claude/skills/agent-skills-nix"
        ]
      }
    }
  }
}

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

claude mcp add agent-skills-nix-skill -- git clone https://github.com/Kyure-A/agent-skills-nix ~/.claude/skills/agent-skills-nix

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

Cas d'usage

Usages concrets : agent-skills-nix

How to declare your Claude skills in a Nix flake

👤 NixOS / Home Manager users ⏱ ~25 min intermediate

Quand l'utiliser : You want your Claude skill set tracked the same way as your shells, editors, and services.

Prérequis

Nix with flakes enabled — echo 'experimental-features = nix-command flakes' >> ~/.config/nix/nix.conf
The flake added as an input — flake input agent-skills-nix.url = "github:Kyure-A/agent-skills-nix";

Déroulement

Add the input

Add agent-skills-nix to my flake inputs and wire it into Home Manager.✓ Copié

→ flake.nix updated with the input + module import
List the skills I want

Declare the skills I use: linear-claude-skill, symfony-ux-skills, mck-ppt-design-skill. Pin to current main.✓ Copié

→ A skills = { ... }; block with pinned revs
Build and switch

Run home-manager switch and verify ~/.claude/skills/ is populated.✓ Copié

→ All skills present as symlinked directories

Résultat : Reproducible skill set managed by Nix — wipe your dotfiles and get the same setup back in one command.

Pièges

Upstream skill changes break your workflow — Pin to a specific rev, only bump on purpose

Combiner avec : filesystem

Sync the same skill set across laptop and workstation

👤 Multi-machine developers ⏱ ~15 min intermediate

Quand l'utiliser : You switch between a laptop and a desktop and keep forgetting to clone the same skills on both.

Déroulement

Add to your shared HM module

Move the skills declaration into my shared home-manager module so both hosts import it.✓ Copié

→ Single source of truth, two hosts consuming it
Switch both hosts

Build and switch on both machines.✓ Copié

→ Matching ~/.claude/skills/ on both

Résultat : Both machines carry the same skill bundle automatically.

Pièges

Forgetting to commit and push before switching on the second machine — Use a self-flake with autoCommit or a shared git repo

Combinaisons

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

agent-skills-nix-skill + filesystem

Claude reads your flake and suggests skills to add/remove

Read my flake.nix, check which of my installed skills haven't been used in 30 days, and suggest removals.✓ Copié

Outils

Ce que ce MCP expose

Outil	Entrées	Quand appeler	Coût
skill-declaration	set of { name, url, rev }	During home-manager switch / nixos-rebuild	nix build runtime
lock-management	flake.lock	When you want deterministic upgrades	0

Coût et limites

Coût d'exécution

Quota d'API: none
Tokens par appel: minimal — Nix declarations are short
Monétaire: free
Astuce: Keep your skill set small — every skill costs context tokens at load time

Sécurité

Permissions, secrets, portée

Stockage des identifiants : none

Sortie de données : fetches only the skill repos you declare

Nix fetches from the git URLs you declare — vet the source before adding to your flake

Dépannage

Erreurs courantes et correctifs

Flake doesn't evaluate

Check input url format and run nix flake check for specific errors.

Vérifier : nix flake check

Skills dir empty after switch

Make sure the module is actually imported in your HM config, and home.activation is running.

Vérifier : ls ~/.claude/skills/

Pinned rev 404

The upstream repo may have rewritten history — update the rev.

Alternatives

agent-skills-nix vs autres

Alternative	Quand l'utiliser	Compromis
manual git clone	You're not on Nix and don't want to be	No reproducibility; easy drift
agent-skills-cli-skill	You want a CLI installer without Nix	Imperative rather than declarative

Plus

Ressources

📖 Lire le README officiel sur GitHub

🐙 Voir les issues ouvertes

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