> 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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### 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.
Each feature is explained in its own dedicated guide.
