# REST API

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Our REST API can be used to integrate any frontend or backend application with Number and use all of our payment services. This way, you have full control over the presentation, and we'll handle the complex payment processes.\
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We recommend following [our REST API integration guide](/documentation/getting-started/integration-options/rest-api.md) to get started. It'll teach you all of the generic concepts you need to correctly authenticate, consume API responses, and how to recognize and handle errors, alongside code examples.


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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://docs.number.tech/api-reference/rest-api.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.