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

Pourquoi l'utiliser

Fonctionnalités clés

12 Convex-specific skills with real code examples
Covers functions (query/mutation/action/HTTP), schema, realtime, cron, file storage, agents
Two security skills: convex-security-check and convex-security-audit
Migration patterns for schema evolution
convex-component-authoring for reusable components

Démo en direct

Aperçu en pratique

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

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

~/.cursor/mcp.json · .cursor/mcp.json

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

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

~/.codeium/windsurf/mcp_config.json

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

Même format que Claude Desktop. Redémarrez Windsurf pour appliquer.

~/.continue/config.json

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

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

~/.config/zed/settings.json

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

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

claude mcp add convexskills-skill -- git clone https://github.com/waynesutton/convexskills ~/.claude/skills/convexskills

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

Cas d'usage

Usages concrets : convexskills

Scaffold a new Convex app with realtime + auth + file uploads

👤 Full-stack devs starting a new Convex project ⏱ ~90 min intermediate

Quand l'utiliser : You're starting fresh and want correct Convex patterns from file one.

Prérequis

Convex CLI — npm create convex

Déroulement

Design the schema

Use the convex-schema-validator skill. Design tables for users, projects, and files with proper indices.✓ Copié

→ Schema uses v.id(), indices declared, relationships correct
Wire queries and mutations

Use the convex-functions skill. Implement CRUD for projects.✓ Copié

→ Query for reads, mutation for writes, no action misuse
Add realtime + file uploads

Use convex-realtime and convex-file-storage to make projects live-update with file attachments.✓ Copié

→ React subscribes via useQuery, files stored via storage.generateUploadUrl

Résultat : A correctly-structured Convex app you can build on.

Pièges

Using actions where mutations suffice — Skill enforces: mutations for DB writes, actions for external I/O

Add a daily cron job that cleans up stale rows

👤 Convex devs adding background maintenance ⏱ ~20 min beginner

Quand l'utiliser : You need a scheduled task without spinning up a worker.

Déroulement

Use the cron skill

Use convex-cron-jobs. Add a daily job that deletes rows older than 30 days from table sessions.✓ Copié

→ crons.ts entry + internal mutation for the cleanup
Test

Give me a way to trigger this manually for testing.✓ Copié

→ Dev-only HTTP action or CLI recipe

Résultat : A cron running on Convex's managed scheduler.

Pièges

Cron runs a query instead of internal mutation — Skill enforces internal mutation for deletes

Audit a Convex app for authorization holes

👤 Devs before a production launch ⏱ ~45 min advanced

Quand l'utiliser : Your app is ready but you haven't pressure-tested auth.

Déroulement

Run the audit

Use convex-security-audit on this repo. Check every public mutation for proper auth.✓ Copié

→ Per-function auth posture with severity
Fix

Apply the fixes with identity checks and fallback to return null for unauthorized reads.✓ Copié

→ Functions updated with ctx.auth checks

Résultat : Auth tightened before production.

Pièges

Relying on 'public=unauthenticated' mental model — Convex public functions are INTERNET-reachable; skill insists on auth checks

Combiner avec : github

Combinaisons

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

convexskills-skill + github

Skill designs + implements; GitHub MCP opens the PR

Use convexskills to build the feature, then open a PR with the changes.✓ Copié

convexskills-skill + playwright-skill

Build Convex backend, then Playwright tests the UI end-to-end

Implement the Convex backend, then write a playwright-skill test that hits the UI and verifies realtime updates.✓ Copié

Outils

Ce que ce MCP expose

Outil	Entrées	Quand appeler
convex-functions	function need	Any function work
convex-schema-validator	data model	Designing or changing tables
convex-realtime	UI use case	Adding reactive UI
convex-cron-jobs	scheduled task	Periodic background work
convex-migrations	schema change	Evolving an existing schema
convex-security-audit	repo	Pre-production review

Coût et limites

Coût d'exécution

Quota d'API: None for the skill; Convex has its own free + paid tiers
Tokens par appel: 2-6k per skill loaded
Monétaire: Free — skill is local. Convex has a generous free tier.
Astuce: Name the specific skill (e.g. convex-cron-jobs) to avoid loading the full set.

Sécurité

Permissions, secrets, portée

Stockage des identifiants : No credentials in the skill. Convex deploy keys stay in your .env.

Sortie de données : None from the skill itself

Convex public functions are Internet-reachable. Always run convex-security-audit before going to production.

Dépannage

Erreurs courantes et correctifs

Claude writes an action when a mutation suffices

Rule of thumb the skill enforces: DB-only → mutation; external I/O → action.

Schema change breaks existing data

Use convex-migrations skill — it plans safe transitions with backfill.

useQuery doesn't update in realtime

Check reactivity: the query must read the data that changed, not a stale index.

Alternatives

convexskills vs autres

Alternative	Quand l'utiliser	Compromis
Manual Convex docs + examples	You're already an experienced Convex dev	Slower onboarding without the skill
Framework-specific fullstack skills	You're not on Convex	Different stack

Plus

Ressources

📖 Lire le README officiel sur GitHub

🐙 Voir les issues ouvertes

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