| name | unbuilt |
| description | Detect the full technology stack of any website by URL. Returns framework, UI library, bundler, state management, styling, tables, animations, forms, API patterns, monitoring, analytics, and more. Use when a user asks to analyze a website's tech stack, build something similar to an existing app, or understand what technologies a site uses. |
| license | MIT |
| metadata | {"author":"yavorsky","version":"1.0"} |
unbuilt
Detect the complete technology stack of any website using live code analysis.
When to use
- User asks "what tech stack does [website] use?"
- User says "build me something like [website]" — analyze it first
- User wants to compare tech stacks of different sites
- User needs to understand a competitor's technical choices
Prerequisites
Requires Node.js >= 20. Install if not present:
npm install -g @unbuilt/cli
Analyze a website
unbuilt <url> --format agent
Always use --format agent — it returns compact one-line-per-category output optimized for your context window.
Example output:
Framework: Next.js
UI: React
Bundler: Webpack
Styling: Tailwind CSS + PostCSS
State: Zustand
Tables: TanStack Table + TanStack Virtual
Components: Radix UI
Animation: Framer Motion
Router: Next.js Router
Monitoring: Sentry
Alternative output formats
Only use these if the user explicitly asks for more detail:
--json — full structured JSON with confidence scores and matched patterns- No flag — default table output with all categories
Remote analysis
If Playwright fails or takes too long:
unbuilt <url> --remote --format agent
Uses unbuilt.app servers with cached results.
Detection categories
Framework, UI Library, Bundler, Styling, Component Library (Radix, Headless UI, Ant Design), State Management, Tables/Virtualization (TanStack Table, AG Grid, Virtuoso), Forms (React Hook Form, Formik, Zod), Animation (Framer Motion, GSAP, Lottie), API Patterns (GraphQL, tRPC, WebSocket, SSE), HTTP Client, Router, Translations, Dates, Transpiler, Monitoring, Analytics, Platform.
