What is StartupKit
Learn what StartupKit is and why it was built
StartupKit is an application accelerator for AI agents. Built as a Turborepo monorepo, it provides a complete foundation with authentication, analytics, database, and UI components pre-configured—all with clear patterns that AI coding tools can understand and extend.
The Problem
Building an application from scratch means spending weeks on boilerplate:
- Setting up authentication flows
- Configuring analytics providers
- Building and styling UI components
- Optimizing for SEO
- Managing a monorepo structure
- Wiring up databases and ORMs
By the time you've got the basics working, you've lost momentum and haven't written a single line of product code.
The Solution
StartupKit gives you everything you need out of the box:
| Feature | What You Get |
|---|---|
| Authentication | Email OTP, OAuth providers, session management via Better Auth |
| Analytics | Provider-agnostic tracking with PostHog, Google Analytics, OpenPanel plugins |
| Database | Drizzle ORM with PostgreSQL, ready-to-use schemas |
| UI Components | Full Shadcn/ui library pre-configured with Tailwind |
| Emails | React Email templates with Resend integration |
| SEO | Metadata, sitemaps, robots.txt, structured data utilities |
Design Principles
1. No Lock-in
Every package in StartupKit wraps standard, well-maintained libraries. If you outgrow a component, you can eject and use the underlying library directly:
- Auth → Better Auth
- Analytics → PostHog / Google Analytics / OpenPanel SDKs
- Database → Drizzle ORM
- UI → Shadcn/ui + Radix
2. AI-Ready
StartupKit is designed for the AI coding era. Clear patterns, consistent conventions, and well-documented code make it easy for tools like Cursor, GitHub Copilot, and Claude to understand and extend your codebase.
Every project includes an AGENTS.md file that explains your codebase structure to AI tools.
3. Production-Ready
This isn't a starter template you'll throw away. StartupKit uses the same architecture patterns used by production applications serving millions of users.
Who Is This For?
StartupKit is ideal for:
- Solo founders who want to ship fast without compromising on quality
- Small teams who need a shared foundation to build on
- Developers who are tired of reinventing the wheel for every project
- Anyone building a web application, internal tool, or AI-powered product
Tech Stack
StartupKit is built on proven technologies:
- Framework: Next.js 16 with App Router
- Language: TypeScript (strict mode)
- React: React 19 with Server Components
- Styling: Tailwind CSS v4
- Components: Shadcn/ui + Radix primitives
- Database: PostgreSQL + Drizzle ORM
- Auth: Better Auth
- Monorepo: Turborepo + pnpm workspaces
- Linting: Biome
Next Steps
Ready to get started?
- Quick Start - Get running in 5 minutes
- Manual Installation - Step-by-step setup guide
- Comparisons - See how StartupKit compares to alternatives