> For the complete documentation index, see [llms.txt](https://dev.ubidots.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dev.ubidots.com/sdks/javascript/overview.md).

# Overview

This JavaScript library provides an intuitive, easy-to-use interface for interacting with the Ubidots API. It lets you send data to devices and perform CRUD (create, read, update, and delete) operations on the library's [supported entities](#supported-entities).

## Features

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

## Supported entities

Currently, the library supports the following API entities:

* [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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