> ## Documentation Index
> Fetch the complete documentation index at: https://docs.crossmint.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Overview
> Create fully custom checkout experiences
For general information about Crossmint's Payments product, see the [introduction](/payments/introduction). This guide will focus on the features specific to the headless checkout.
## When is the Headless Checkout the best fit?
* **You want to build the entire user experience**
* **You want to use Crossmint checkout outside of a browser environment** (e.g. native mobile app, game, VR headset, etc.)
* **You are okay spending more time developing your own UX**
## Introduction
Crossmint's headless checkout API is a set of REST APIs that allow you to integrate credit card and cross-chain crypto payments inside your app with full control of the user experience.
It is the most customizable version of the Crossmint suite of payments products, which allows anyone to buy digital assets with familiar payment methods (credit card, crypto on any chain independent on where the asset lives) with the same backend, but allowing full UI customizability and deep integration with your app's UX.
Wherever your imagination takes you...
## Get Started
Build a custom Pay with Crypto checkout experience for your digital assets
Build a custom credit-card checkout experience
Build a USDC checkout in 5 minutes (great for AI agents)
Sell memecoins quickly with a credit card checkout
Contact our sales team for advanced support.
## Advanced Topics
