App Builder
App Builder is an code AI skill with a core value of Main application building orchestrator. It
helps developers solve real-world problems in the code domain, boosting
efficiency, automating repetitive tasks, and optimizing workflows.
Main application building orchestrator. Creates full-stack applications from natural language requests. Determines project type, selects tech stack, coordinates agents.
Quick Facts
mkdir -p ./skills/app-builder && curl -sfL https://raw.githubusercontent.com/sickn33/antigravity-awesome-skills/main/skills/app-builder/SKILL.md -o ./skills/app-builder/SKILL.mdRun in terminal / PowerShell. Requires curl (Unix) or PowerShell 5+ (Windows).
Skill Content
# App Builder - Application Building Orchestrator
> Analyzes user's requests, determines tech stack, plans structure, and coordinates agents.
🎯 Selective Reading Rule
**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 |
---
📦 Templates (13)
Quick-start scaffolding for new projects. **Read the matching template only!**
| Template | Tech Stack | When to Use |
|----------|------------|-------------|
| [nextjs-fullstack](templates/nextjs-fullstack/TEMPLATE.md) | Next.js + Prisma | Full-stack web app |
| [nextjs-saas](templates/nextjs-saas/TEMPLATE.md) | Next.js + Stripe | SaaS product |
| [nextjs-static](templates/nextjs-static/TEMPLATE.md) | Next.js + Framer | Landing page |
| [nuxt-app](templates/nuxt-app/TEMPLATE.md) | Nuxt 3 + Pinia | Vue full-stack app |
| [express-api](templates/express-api/TEMPLATE.md) | Express + JWT | REST API |
| [python-fastapi](templates/python-fastapi/TEMPLATE.md) | FastAPI | Python API |
| [react-native-app](templates/react-native-app/TEMPLATE.md) | Expo + Zustand | Mobile app |
| [flutter-app](templates/flutter-app/TEMPLATE.md) | Flutter + Riverpod | Cross-platform mobile |
| [electron-desktop](templates/electron-desktop/TEMPLATE.md) | Electron + React | Desktop app |
| [chrome-extension](templates/chrome-extension/TEMPLATE.md) | Chrome MV3 | Browser extension |
| [cli-tool](templates/cli-tool/TEMPLATE.md) | Node.js + Commander | CLI app |
| [monorepo-turborepo](templates/monorepo-turborepo/TEMPLATE.md) | Turborepo + pnpm | Monorepo |
---
🔗 Related Agents
| 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 |
---
Usage Example
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 previewWhen to Use
This skill is applicable to execute the workflow or actions described in the overview.
🎯 Best For
- UI designers
- Product designers
- Claude users
- Software engineers
- Development teams
💡 Use Cases
- Generating component mockups
- Creating design system tokens
- Code quality improvement
- Best practice enforcement
📖 How to Use This Skill
- 1
Install the Skill
Copy the install command from the Terminal tab and run it. The SKILL.md file downloads to your local skills directory.
- 2
Load into Your AI Assistant
Open Claude and reference the skill. Paste the SKILL.md content or use the system prompt tab.
- 3
Apply App Builder to Your Work
Open your project in the AI assistant and ask it to apply the skill. Start with a small module to verify the output quality.
- 4
Review and Refine
Review AI suggestions before committing. Run tests, check for regressions, and iterate on the skill output.
❓ Frequently Asked Questions
Does this work with Figma?
Some design skills integrate with Figma plugins. Check the Works With section for supported tools.
Is App Builder compatible with Cursor and VS Code?
Yes — this skill works with any AI coding assistant including Cursor, VS Code with Copilot, and JetBrains IDEs.
Do I need specific dependencies for App Builder?
Check the install command and Works With section. Most code skills only require the AI assistant and your codebase.
How do I install App Builder?
Copy the install command from the Terminal tab and run it. The skill downloads to ./skills/app-builder/SKILL.md, ready to use.
Can I customize this skill for my team?
Absolutely. Edit the SKILL.md file to add team-specific instructions, examples, or workflows.
⚠️ Common Mistakes to Avoid
Skipping usability testing
AI-generated designs should be validated with real users before development.
Skipping validation
Always test AI-generated code changes, even for simple refactors.
Missing dependency updates
Check if the skill requires updated dependencies or new packages.