> ## Documentation Index > Fetch the complete documentation index at: https://docs.zopio.dev/llms.txt > Use this file to discover all available pages before exploring further. # Payments > How `zopio` handles payments and billing. `zopio` uses [Stripe](https://stripe.com/) by default for payments and billing. Implementing Stripe in your project is straightforward. ## In-App Purchases You can use Stripe anywhere in your app by importing the `stripe` object like so: ```ts page.tsx {1,5} theme={"system"} import { stripe } from '@repo/payments'; // ... await stripe.prices.list(); ``` ## Webhooks zopio has a pre-built webhook handler for payment events. Read more about [inbound payment webhooks](/packages/webhooks/inbound#payment-events). ## Anti-Fraud As your app grows, you will inevitably encounter credit card fraud. [Stripe Radar](https://stripe.com/radar) is enabled by default if you integrate payments using their SDK as described above. This provides a set of tools to help you detect and prevent fraud. Stripe Radar supports more [advanced anti-fraud features](https://docs.stripe.com/disputes/prevention/advanced-fraud-detection) if you embed the Stripe JS script in every page load. This is not enabled by default in zopio, but you can add it as follows: Edit `apps/app/app/layout.tsx` and add `