> For the complete documentation index, see [llms.txt](https://docs.vapordex.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.vapordex.io/vapordex/fiat-on-and-off-ramping/onramper.md). # Onramper ## What is Onramper? Onramper is a ‘fiat onramp aggregator’ that aggregates multiple major fiat-to-crypto onramps in a single easy-to-implement fiat onramp. It means that businesses can integrate Onramper on their website and very easily allow their users to buy crypto using fiat. By aggregating multiple fiat onramps, Onramper ensures users will always get the best available price for any transaction. Aggregating the multiple onramps provides the best possible coverage of available fiat currencies, cryptocurrencies, supported geographies, and payment methods. The user chooses what crypto he/she wants to buy, what fiat currency is used and what payment method he/she wants to buy it. Onramper then provides the user with a choice between the best available offers from the major fiat onramps. After the user chooses an onramp, he/she can fill in the personal information required by the chosen fiat onramp. Onramper sends all data inputted by the user to the onramp to complete the transaction.\ \ For support with On-ramper team - --- # 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.vapordex.io/vapordex/fiat-on-and-off-ramping/onramper.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.