> For the complete documentation index, see [llms.txt](https://apidocs.onekeypayments.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://apidocs.onekeypayments.com/guides/deposits/create-deposits/credit-cards.md).

# Credit cards

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## Processing card payments

This documentation is structured to guide you through our payment system step-by-step. \
We will begin with the most **basic deposit** flows and then introduce additional features as separate components.\
This approach ensures you can build a solid foundation first and add more complex functionality only as it is needed.
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<figure><img src="/files/wpMmdjzx867rt8aqDIxi" alt=""><figcaption></figcaption></figure>

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### Basic deposit

All payment integrations begin with a Basic deposit. This guide covers a simple, one-time charge, which is the core of our payment processing system.

We recommend completing this guide first, as all other features are built on top of this primary transaction.

### Add features to your integration

After you are familiar with the basic deposit, you can incorporate additional capabilities into your integration.&#x20;

Each feature is explained in its own dedicated guide.

<table data-card-size="large" data-view="cards"><thead><tr><th align="center"></th><th data-hidden data-card-cover data-type="files"></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td align="center"><strong>3DS</strong></td><td><a href="/files/Bh3EsPHD9PO6ZsVMQvpC">/files/Bh3EsPHD9PO6ZsVMQvpC</a></td><td><a href="/pages/9764OJAf1USkcfAXeZ2f">/pages/9764OJAf1USkcfAXeZ2f</a></td></tr><tr><td align="center"><strong>Installments</strong></td><td><a href="/files/PFMFhez6RKoSuRIP8nCB">/files/PFMFhez6RKoSuRIP8nCB</a></td><td><a href="/pages/8gAoMoveLCikW6QHhYqn">/pages/8gAoMoveLCikW6QHhYqn</a></td></tr><tr><td align="center"><strong>Card-on-file</strong></td><td><a href="/files/D0B1zcyLqvkA2n2tKdrk">/files/D0B1zcyLqvkA2n2tKdrk</a></td><td><a href="/pages/WeqM6sxKrDXzBBjdSmvC">/pages/WeqM6sxKrDXzBBjdSmvC</a></td></tr><tr><td align="center"><strong>Subscriptions</strong></td><td><a href="/files/pAMwDpdOH0tHd5bGC2Cy">/files/pAMwDpdOH0tHd5bGC2Cy</a></td><td><a href="/pages/bKaJjefhQmDQd5sTP7KP">/pages/bKaJjefhQmDQd5sTP7KP</a></td></tr></tbody></table>