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Get Started Free →Main application building orchestrator. Creates full-stack applications from natural language requests. Determines project type, selects tech stack, coordinates agents.
.claude/skills/davila7-app-builder/SKILL.md| Test case | Without → With | Effect | Δ tokens | Δ turns |
|---|---|---|---|---|
| case-01 | ✗→✓ | ▲ Improved | 26% | 0% |
| case-02 | ✗→✓ | ▲ Improved | 36% | 0% |
| case-17 | ✗→✓ | ▲ Improved | 37% | 0% |
| case-21 | ✓→✓ | ＝ Same ✓ | 152% | 0% |
| case-22 | ✓→✓ | ＝ Same ✓ | 29% | 0% |
> 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 | | 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| Case | Status | Duration (ms) | Turns | Tokens | Tool calls | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Without | With | Δ | Without | With | Δ | Without | With | Δ | Without | With | Δ | ||
case-21 | pass→pass | 2,258 | 2,524 | +12% | 1 | 1 | 0% | 461 | 1,162 | +152% | 0 | 0 | — |
case-22 | pass→pass | 5,974 | 3,957 | -34% | 1 | 1 | 0% | 1,216 | 1,573 | +29% | 0 | 0 | — |
case-01 | fail→pass | 18,958 | 22,257 | +17% | 1 | 1 | 0% | 3,467 | 4,353 | +26% | 0 | 0 | — |
case-02 | fail→pass | 22,816 | 23,134 | +1% | 1 | 1 | 0% | 3,829 | 5,215 | +36% | 0 | 0 | — |
case-03 | fail→fail | 16,951 | 11,788 | -30% | 1 | 1 | 0% | 3,033 | 2,842 | -6% | 0 | 0 | — |
case-04 | pass→pass | 19,119 | 6,733 | -65% | 1 | 1 | 0% | 1,677 | 2,036 | +21% | 0 | 0 | — |
case-05 | pass→pass | 11,478 | 7,196 | -37% | 1 | 1 | 0% | 2,040 | 2,025 | -1% | 0 | 0 | — |
case-06 | pass→pass | 12,214 | 8,184 | -33% | 1 | 1 | 0% | 2,196 | 2,290 | +4% | 0 | 0 | — |
case-07 | pass→pass | 3,351 | 3,334 | -1% | 1 | 1 | 0% | 623 | 1,427 | +129% | 0 | 0 | — |
case-08 | pass→pass | 2,796 | 2,147 | -23% | 1 | 1 | 0% | 435 | 1,183 | +172% | 0 | 0 | — |
case-09 | pass→pass | 10,096 | 8,690 | -14% | 1 | 1 | 0% | 1,873 | 2,452 | +31% | 0 | 0 | — |
case-10 | pass→pass | 8,467 | 4,904 | -42% | 1 | 1 | 0% | 1,473 | 1,743 | +18% | 0 | 0 | — |
case-11 | pass→pass | 3,540 | 2,897 | -18% | 1 | 1 | 0% | 529 | 1,332 | +152% | 0 | 0 | — |
case-12 | pass→pass | 10,510 | 4,869 | -54% | 1 | 1 | 0% | 2,006 | 1,747 | -13% | 0 | 0 | — |
case-13 | pass→pass | 4,269 | 3,007 | -30% | 1 | 1 | 0% | 837 | 1,398 | +67% | 0 | 0 | — |
case-14 | pass→pass | 13,239 | 9,619 | -27% | 1 | 1 | 0% | 2,032 | 2,315 | +14% | 0 | 0 | — |
case-15 | pass→pass | 5,397 | 3,533 | -35% | 1 | 1 | 0% | 1,023 | 1,406 | +37% | 0 | 0 | — |
case-16 | pass→pass | 13,349 | 12,042 | -10% | 1 | 1 | 0% | 2,722 | 3,458 | +27% | 0 | 0 | — |
case-17 | fail→pass | 6,628 | 5,441 | -18% | 1 | 1 | 0% | 1,309 | 1,793 | +37% | 0 | 0 | — |
case-18 | pass→pass | 11,339 | 11,175 | -1% | 1 | 1 | 0% | 2,168 | 2,810 | +30% | 0 | 0 | — |
case-19 | pass→pass | 1,968 | 3,100 | +58% | 1 | 1 | 0% | 346 | 1,373 | +297% | 0 | 0 | — |
case-20 | pass→pass | 2,265 | 2,579 | +14% | 1 | 1 | 0% | 436 | 1,262 | +189% | 0 | 0 | — |
DecimalAI ran this skill against gemini-3.6-flash twice over the same eval suite — once with the skill loaded and once without — and compared the two runs case by case. 22 cases were attempted. The headline lift of +14 percentage points is the difference between those two pass rates over the 22 comparable cases.
Without the skill loaded, the model failed this case. With it loaded, the same prompt on the same model passed. This is one improved case from the latest verified run; every case, including any that regressed, is in the table above.
Other measured skills in the registry, with their headline benchmark lift.