# Overview

This JS library provides an intuitive and easy-to-use interface to interact with Ubidots' API. It allows you to send data to devices and/or perform CRUD (create, read, update, delete) operations over the library's [supported entities](#supported-entities).

## Features

* Pre-defined requests to Ubidots API via the library's [methods](/sdks/javascript/ubidots-class/get-methods.md).
* Custom request building taking advantage of [Ubidots field filters](https://docs.ubidots.com/reference/field-filters) via [filter methods](/sdks/javascript/ubidots-class/filter-methods.md).
* Custom API host configuration via `setBaseUrl` method

## Supported entities

For the time being, the library supports the following entities from the API:

* [Devices](https://docs.ubidots.com/reference/device-object)
* [Variables](https://docs.ubidots.com/reference/variable-object)
* [Organizations](https://docs.ubidots.com/reference/organization-object)
* [Users](https://docs.ubidots.com/reference/user-object)
* [Dashboards](https://docs.ubidots.com/reference/dashboard-object)

## Supported field filters <a href="#supported-field-filters" id="supported-field-filters"></a>

The library supports all of Ubidots [field filters](https://docs.ubidots.com/reference/field-filters) on each entity mentioned above.


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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://dev.ubidots.com/sdks/javascript/overview.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.