# Intro

Welcome to the FCFpay API documentation.

In this document we will take you through the process of making requests to FCF Pay Merchant's API so you can set-up a custom installation on your website, to allow your customers to pay you with cryptocurrencies.

FCF Pay can be integrated into any system using the API calls.

Dive a little deeper and start exploring our API reference to get an idea of everything that's possible with the API:

{% content-ref url="reference/api-requests-v2" %}
[api-requests-v2](https://api-docs.fcfpay.com/reference/api-requests-v2)
{% endcontent-ref %}


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# Agent Instructions: 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:

```
GET https://api-docs.fcfpay.com/intro.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
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.