.agent/skills/app-builder/SKILL.md
Main application building orchestrator. Creates full-stack applications from natural language requests. Determines project type, selects tech stack, coordinates agents.
npx skillsauth add edpachecojr/sentinel app-builderInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
Analyzes user's requests, determines tech stack, plans structure, and coordinates agents.
Read ONLY files relevant to the request! Check the content map, find what you need.
| File | Description | When to Read |
|------|-------------|--------------|
| project-detection.md | Keyword matrix, project type detection | Starting new project |
| tech-stack.md | 2026 default stack, alternatives | Choosing technologies |
| agent-coordination.md | Agent pipeline, execution order | Coordinating multi-agent work |
| scaffolding.md | Directory structure, core files | Creating project structure |
| feature-building.md | Feature analysis, error handling | Adding features to existing project |
| templates/SKILL.md | Project templates | Scaffolding new project |
Quick-start scaffolding for new projects. Read the matching template only!
| Template | Tech Stack | When to Use | |----------|------------|-------------| | nextjs-fullstack | Next.js + Prisma | Full-stack web app | | nextjs-saas | Next.js + Stripe | SaaS product | | nextjs-static | Next.js + Framer | Landing page | | nuxt-app | Nuxt 3 + Pinia | Vue full-stack app | | express-api | Express + JWT | REST API | | python-fastapi | FastAPI | Python API | | react-native-app | Expo + Zustand | Mobile app | | flutter-app | Flutter + Riverpod | Cross-platform mobile | | electron-desktop | Electron + React | Desktop app | | chrome-extension | Chrome MV3 | Browser extension | | cli-tool | Node.js + Commander | CLI app | | monorepo-turborepo | Turborepo + pnpm | Monorepo |
| Agent | Role |
|-------|------|
| project-planner | Task breakdown, dependency graph |
| frontend-specialist | UI components, pages |
| backend-specialist | API, business logic |
| database-architect | Schema, migrations |
| devops-engineer | Deployment, preview |
User: "Make an Instagram clone with photo sharing and likes"
App Builder Process:
1. Project type: Social Media App
2. Tech stack: Next.js + Prisma + Cloudinary + Clerk
3. Create plan:
├─ Database schema (users, posts, likes, follows)
├─ API routes (12 endpoints)
├─ Pages (feed, profile, upload)
└─ Components (PostCard, Feed, LikeButton)
4. Coordinate agents
5. Report progress
6. Start preview
development
Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit design", "review UX", or "check my site against best practices".
tools
UI/UX design intelligence. 50 styles, 21 palettes, 50 font pairings, 20 charts, 9 stacks (React, Next.js, Vue, Svelte, SwiftUI, React Native, Flutter, Tailwind, shadcn/ui). Actions: plan, build, create, design, implement, review, fix, improve, optimize, enhance, refactor, check UI/UX code. Projects: website, landing page, dashboard, admin panel, e-commerce, SaaS, portfolio, blog, mobile app, .html, .tsx, .vue, .svelte. Elements: button, modal, navbar, sidebar, card, table, form, chart. Styles: glassmorphism, claymorphism, minimalism, brutalism, neumorphism, bento grid, dark mode, responsive, skeuomorphism, flat design. Topics: color palette, accessibility, animation, layout, typography, font pairing, spacing, hover, shadow, gradient. Integrations: shadcn/ui MCP for component search and examples.
tools
Configure TOTP authenticator apps, send OTP codes via email/SMS, manage backup codes, handle trusted devices, and implement 2FA sign-in flows using Better Auth's twoFactor plugin. Use when users need MFA, multi-factor authentication, authenticator setup, or login security with Better Auth.
testing
Testing patterns and principles. Unit, integration, mocking strategies.