55 skills pour piloter Claude Code.

Transforms a CSV, Excel or Google Sheet into a deployed full-stack Next.js site on the user's stack (GitHub + Vercel + Supabase + SendGrid). Use this skill whenever the user has tabular data (any domain - real estate, contacts, recipes, alternance, inventory, anything) and wants to turn it into a live web app, a directory site, an internal tool, or a CRM-style interface. Trigger phrases include "j'ai un CSV", "I have a spreadsheet", "build me a site from this Excel", "fais-moi un site avec ces données", "deploy this Google Sheet as an app", or any time the user uploads tabular data and mentions wanting it online. Encodes the user's specific stack conventions (Next.js 14 App Router, shadcn/ui with @base-ui/react, Tailwind, Zod 4 + react-hook-form, Supabase Postgres + RLS + magic link, Vercel auto-deploy, SendGrid in French) and all the gotchas they hit building production apps. Even if the user only says "build me a site for X" without mentioning the data file explicitly, ask them if they have a CSV/Excel/Sheet and use this skill.

Trame de déploiement d'un site web Next.js sur un sous-domaine custom : DNS chez ton registrar, hosting Vercel, base Supabase, email transactionnel Resend. Charge ce skill quand tu veux mettre un projet en prod sur un sous-domaine de TON domaine, brancher un projet Vercel existant sur un domaine custom, ou construire une nouvelle landing. Couvre les pièges classiques : conflit CNAME, fallback NEXT_PUBLIC_APP_URL, Resend DKIM sur sous-domaine mail.*, Google OAuth redirect URL.

| Search, scrape, and interact with the web via the Firecrawl CLI. Use this skill whenever the user wants to search the web, find articles, research a topic, look something up online, scrape a webpage, grab content from a URL, get data from a website, crawl documentation, download a site, or interact with pages that need clicks or logins. Also use when they say "fetch this page", "pull the content from", "get the page at https://", or reference external websites. This provides real-time web search with full page content and interact capabilities — beyond what Claude can do natively with built-in tools. Do NOT trigger for local file operations, git commands, deployments, or code editing tasks.

Next.js best practices - file conventions, RSC boundaries, data patterns, async APIs, metadata, error handling, route handlers, image/font optimization, bundling

Manages shadcn components and projects — adding, searching, fixing, debugging, styling, and composing UI. Provides project context, component docs, and usage examples. Applies when working with shadcn/ui, component registries, presets, --preset codes, or any project with a components.json file. Also triggers for "shadcn init", "create an app with --preset", or "switch to --preset".

Postgres performance optimization and best practices from Supabase. Use this skill when writing, reviewing, or optimizing Postgres queries, schema designs, or database configurations.

Qualité et méthode de dev : debug systématique, TDD, vérification avant de conclure, demander et recevoir une revue de code. Charge ce skill face à un bug, avant de coder en TDD, avant de dire 'c'est fini', ou autour d'une code review.

Bonnes pratiques et performance React / Next.js (guidelines Vercel) : perf, patterns de composition, React Native. Charge ce skill pour optimiser ou structurer du code React/Next/React Native selon Vercel.

Guides stable API and interface design. Use when designing APIs, module boundaries, or any public interface. Use when creating REST or GraphQL endpoints, defining type contracts between modules, or establishing boundaries between frontend and backend.

Optimizes application performance. Use when performance requirements exist, when you suspect performance regressions, or when Core Web Vitals or load times need improvement. Use when profiling reveals bottlenecks that need fixing.

Configure Better Auth server and client, set up database adapters, manage sessions, add plugins, and handle environment variables. Use when users mention Better Auth, betterauth, auth.ts, or need to set up TypeScript authentication with email/password, OAuth, or plugin configuration.

Use when implementation is complete, all tests pass, and you need to decide how to integrate the work - guides completion of development work by presenting structured options for merge, PR, or cleanup

Piloter l'API Notion en bas niveau et via le CLI ntn : créer/mettre à jour des pages, query des databases, déployer des workers Notion, uploader des fichiers, appeler l'API REST Notion. Charge ce skill quand l'utilisateur veut 'appeler l'API Notion', 'déployer un worker Notion', 'uploader un fichier dans Notion', ou toute opération technique bas niveau sur Notion (≠ conception d'espace Notion = skill notion).

Use when the user wants to translate a repository README, make a repo multilingual, localize docs, add a language switcher, internationalize the README, or update localized README variants in a GitHub-style repository.

Use when starting feature work that needs isolation from current workspace or before executing implementation plans - creates isolated git worktrees with smart directory selection and safety verification