# Building Custom Storefronts

Build modern, headless custom storefronts with Finqu's authenticated GraphQL Storefront API, Nexus theme, and developer tools.

## What is a Custom Storefront?

A custom storefront is a headless commerce frontend that connects to Finqu's authenticated Storefront GraphQL API. Unlike traditional Liquid themes, custom storefronts provide:

- **Full customer authentication** - Secure customer accounts and personalized experiences
- **Modern tech stack** - Built with Next.js, React, and modern web technologies
- **Visual editing** - Use Puck for visual page building and content management
- **Flexible architecture** - Complete control over your frontend implementation
- **Developer tools** - SDK, libraries, and CLI commands to accelerate development

## Key Components

### Nexus Theme

Nexus is Finqu's official Next.js-based storefront theme. It includes:

- Pre-built components and pages
- Puck integration for visual editing
- Authentication flows
- Cart and checkout functionality
- SEO optimization
- Performance best practices

[Learn more about Nexus →](./nexus-theme/overview)

### Storefront SDK & Library

Use the TypeScript SDK and library to interact with the Storefront GraphQL API:

- **storefront-sdk** - High-level SDK for common operations
- **storefront-lib** - Lower-level library for custom implementations

[Explore the SDK →](./storefront-sdk)

### CLI Commands

The Finqu CLI includes storefront-specific commands for:

- Initializing new storefront projects
- Managing storefront configurations
- Deploying storefronts
- Development workflows

[CLI Storefront Commands →](/apis-and-tools/cli/storefront)

### UCP & Agentic Commerce

Expose your store to AI agents through the [Universal Commerce Protocol (UCP)](/reference/ucp). Enable UCP in channel settings and build agent integrations with the [Agentic Commerce](/ai/agentic-commerce/overview) guides.

## Getting Started

To build your first custom storefront, start with the getting started guide.

[Get Started →](./getting-started)