Source: https://datafa.st/docs/dodopayments
Markdown source: https://datafa.st/docs/dodopayments.md
Description: Set up revenue attribution with Dodo Payments. Capture visitor ID in checkout metadata and send payment data to DataFast via webhook.

# Attribute revenue with Dodo Payments

← [Revenue attribution guide](/docs/revenue-attribution-guide)

# Attribute revenue with Dodo Payments

> Make sure you've [installed the DataFast tracking script](/docs/getting-started) first.

## 1. Pass the DataFast visitor ID to Dodo Payments Checkout

DataFast uses a simple cookie named `datafast_visitor_id` to track visitors. Send the value of this cookie to the checkout metadata when creating a checkout session in Dodo Payments.

```javascript
import { cookies } from 'next/headers';
import { dodopayments } from '@/lib/dodopayments';

const cookieStore = await cookies();

const checkoutSession = await dodopayments.checkoutSessions.create({
  product_cart: [
    {
      product_id: productId,
      quantity: 1,
    },
  ],
  metadata: {
    datafast_visitor_id: cookieStore.get('datafast_visitor_id')?.value, // Passing DataFast's visitor ID to Dodo Payments
  },
  // ... other checkout session creation parameters
});
```

## 2. Get a DataFast API key

Create a DataFast API key from your [Website Settings](/dashboard). Go to **Website Settings > API** and click **Create API Key**.

> Keep your API key secure and never expose it in client-side code.

## 3. Create webhook in Dodo Payments

1. In your Dodo Payments dashboard, navigate to **Developer → Webhooks → Add endpoint**
2. Select **DataFast** from the dropdown

![Select DataFast integration](/blog-dodopayments-select-datafast.jpg)

3. Paste your DataFast API Key
4. Click **Create**

## Done!

🎉 Revenue data will now appear in your DataFast dashboard with full attribution to marketing channels.

> After receiving a successful payment, you should see revenue data in your dashboard (referrer, country, browser, etc.).