// Main application building orchestrator. Creates full-stack applications from natural language requests. Determines project type, selects tech stack, coordinates agents.
| name | app-builder |
| description | Main application building orchestrator. Creates full-stack applications from natural language requests. Determines project type, selects tech stack, coordinates agents. |
| allowed-tools | Read, Write, Edit, Glob, Grep, Bash, Agent |
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 | 2025 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 |
| 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
API design principles and decision-making. REST vs GraphQL vs tRPC selection, response formats, versioning, pagination.
Project scaffolding templates for new applications. Use when creating new projects from scratch. Contains 12 templates for various tech stacks.
Architectural decision-making framework. Requirements analysis, trade-off evaluation, ADR documentation. Use when making architecture decisions or analyzing system design.
Bash/Linux terminal patterns. Critical commands, piping, error handling, scripting. Use when working on macOS or Linux systems.
AI operational modes (brainstorm, implement, debug, review, teach, ship, orchestrate). Use to adapt behavior based on task type.
Socratic questioning protocol + user communication. MANDATORY for complex requests, new features, or unclear requirements. Includes progress reporting and error handling.