> For the complete documentation index, see [llms.txt](https://articles.optty.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://articles.optty.com/payment-methods-best-practices.md).

# Payment Methods Best Practices

- [How to apply API Credentials](https://articles.optty.com/payment-methods-best-practices/how-to-apply-api-credentials.md)