App Builder

1---
2name: app-builder
3description: Main application building orchestrator. Creates full-stack applications from natural language requests. Determines project type, selects tech stack, coordinates agents.
4allowed-tools: Read, Write, Edit, Glob, Grep, Bash, Agent
5---
6 
7# App Builder - Application Building Orchestrator
8 
9> Analyzes user's requests, determines tech stack, plans structure, and coordinates agents.
10 
11## 🎯 Selective Reading Rule
12 
13**Read ONLY files relevant to the request!** Check the content map, find what you need.
14 
15| File | Description | When to Read |
16|------|-------------|--------------|
17| `project-detection.md` | Keyword matrix, project type detection | Starting new project |
18| `tech-stack.md` | 2025 default stack, alternatives | Choosing technologies |
19| `agent-coordination.md` | Agent pipeline, execution order | Coordinating multi-agent work |
20| `scaffolding.md` | Directory structure, core files | Creating project structure |
21| `feature-building.md` | Feature analysis, error handling | Adding features to existing project |
22| `templates/SKILL.md` | **Project templates** | Scaffolding new project |
23 
24---
25 
26## 📦 Templates (13)
27 
28Quick-start scaffolding for new projects. **Read the matching template only!**
29 
30| Template | Tech Stack | When to Use |
31|----------|------------|-------------|
32| [nextjs-fullstack](templates/nextjs-fullstack/TEMPLATE.md) | Next.js + Prisma | Full-stack web app |
33| [nextjs-saas](templates/nextjs-saas/TEMPLATE.md) | Next.js + Stripe | SaaS product |
34| [nextjs-static](templates/nextjs-static/TEMPLATE.md) | Next.js + Framer | Landing page |
35| [nuxt-app](templates/nuxt-app/TEMPLATE.md) | Nuxt 3 + Pinia | Vue full-stack app |
36| [express-api](templates/express-api/TEMPLATE.md) | Express + JWT | REST API |
37| [python-fastapi](templates/python-fastapi/TEMPLATE.md) | FastAPI | Python API |
38| [react-native-app](templates/react-native-app/TEMPLATE.md) | Expo + Zustand | Mobile app |
39| [flutter-app](templates/flutter-app/TEMPLATE.md) | Flutter + Riverpod | Cross-platform mobile |
40| [electron-desktop](templates/electron-desktop/TEMPLATE.md) | Electron + React | Desktop app |
41| [chrome-extension](templates/chrome-extension/TEMPLATE.md) | Chrome MV3 | Browser extension |
42| [cli-tool](templates/cli-tool/TEMPLATE.md) | Node.js + Commander | CLI app |
43| [monorepo-turborepo](templates/monorepo-turborepo/TEMPLATE.md) | Turborepo + pnpm | Monorepo |
44 
45---
46 
47## 🔗 Related Agents
48 
49| Agent | Role |
50|-------|------|
51| `project-planner` | Task breakdown, dependency graph |
52| `frontend-specialist` | UI components, pages |
53| `backend-specialist` | API, business logic |
54| `database-architect` | Schema, migrations |
55| `devops-engineer` | Deployment, preview |
56 
57---
58 
59## Usage Example
60 
61```
62User: "Make an Instagram clone with photo sharing and likes"
63 
64App Builder Process:
651. Project type: Social Media App
662. Tech stack: Next.js + Prisma + Cloudinary + Clerk
673. Create plan:
68   ├─ Database schema (users, posts, likes, follows)
69   ├─ API routes (12 endpoints)
70   ├─ Pages (feed, profile, upload)
71   └─ Components (PostCard, Feed, LikeButton)
724. Coordinate agents
735. Report progress
746. Start preview
75```
76