> For the complete documentation index, see [llms.txt](https://decuple.gitbook.io/faxen-whitepaper/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://decuple.gitbook.io/faxen-whitepaper/specifications/multi-crypto-payment-gateway.md). # Multi Crypto Payment Gateway The MCPG service, or Multi Crypto Payment Gateway, is a convenient and secure payment solution for e-commerce websites that enables businesses to accept payments in cryptocurrencies. To use this service, the user simply needs to create an account on Faxen and apply for a gateway and an API key. Once approved, the user will receive a code that can be integrated into their e-commerce website's checkout page. Customers who place an order will be redirected to the Faxen crypto payment gateway, where they can pay using their preferred cryptocurrency. The payment will be automatically processed and transferred to the user's Faxen account, where it can be withdrawn. Monthly or pay-as-go fees would be associated with this service for the receiver, which can only be paid using FAX tokens. These fees are necessary to cover the costs of processing and maintaining the payment gateway infrastructure, and they are designed to be as competitive as possible. Overall, the MCPG service offered by Faxen provides a convenient and secure way for businesses to accept payments in cryptocurrencies, helping to expand the reach of their customer base and streamline their payment processing. --- # 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://decuple.gitbook.io/faxen-whitepaper/specifications/multi-crypto-payment-gateway.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.