> ## Documentation Index
> Fetch the complete documentation index at: https://sequence-0fb8d9e6-api_docs.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Onboard User Funds

Once your user's have a sufficient balance of cryptocurrencies in their wallet, purchasing collectibles is super easy! But, on-ramping user funds into cryptocurrencies hasn't always been easy, until now!

The Sequence SDK integrates a variety of payment service providers, like [Transak](https://transak.com/#onramp) and [Sardine](https://docs.payments.sardine.ai/guides/integration/OnOffRamps/quickstart), to facilitate on-ramping user funds via a user friendly web-based flow using their credit/debit card.

While you can work with either integration directly, it is recommended to work with them via `SequencePay` so that the appropriate (based on geographic availability and other factors) provider implementation is used.

## On-Ramp User Funds via Credit/Debit Card

To generate a link for your user's on-ramping:

```csharp theme={null}
SequencePay pay = new SequencePay(wallet, chain);
string onRampLink = pay.GetOnRampLink(); 
```

From here, you can open the `onRampLink` via `Application.OpenURL` or similar. Or, you can also use:

```csharp theme={null}
SequencePay pay = new SequencePay(wallet, chain);
pay.OnRamp();
```

This will automatically call `Application.OpenURL` on the generated On-Ramp link.