> For the complete documentation index, see [llms.txt](https://docs.verifone.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.verifone.com/online-payments/advanced-payment-methods-apms/paypal.md). # PayPal PayPal is a real-time payment and money transfer solution available globally. Businesses and customers with PayPal accounts can easily send and receive payments online without the need to turn to more traditional payment mechanisms. The total value of PayPal transactions in 2011 was $118 billion, generated by 110 million active registered accounts and owned by customers in 190 markets worldwide. PayPal mobile payment volume in 2011 was $4 billion, growing from $750 million in mobile payments in 2010. (Active accounts are those that have had activity in the past 12 months.) --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.verifone.com/online-payments/advanced-payment-methods-apms/paypal.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.