# Basics

If you choose to use the REST API, we recommend you to read about [Authentication](/documentation/getting-started/basics/authentication.md), [API Best Practices](/documentation/getting-started/basics/api-best-practices.md), and [API Input Validation](/documentation/getting-started/basics/api-input-validation.md). You may also want to refer to the resources about [Querying](/documentation/resources/querying.md) and [Error Codes](/documentation/resources/error-codes.md) once you start working on the integration.

Here are the articles in this section:

<table data-view="cards"><thead><tr><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>Authentication ></strong></td><td><a href="/pages/EaDC5Lrnndv0FVDZ16nx">/pages/EaDC5Lrnndv0FVDZ16nx</a></td></tr><tr><td><strong>API Best Practices ></strong></td><td><a href="/pages/O4skKwGvwu6Bnp83WZ8H">/pages/O4skKwGvwu6Bnp83WZ8H</a></td></tr><tr><td><strong>API Input Validation ></strong></td><td><a href="/pages/ANRlDOIxkqeWrI1GmtCl">/pages/ANRlDOIxkqeWrI1GmtCl</a></td></tr></tbody></table>


---

# 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/documentation/getting-started/basics.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.