# Fetching Data

You can easily use echo3D with your JavaScript project by using our RESTful API instead of using our SDK.

You can use the [fetch](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch) interface to query your project [data set](/api/objects.md#1-complete-data-set) using the [query API call](/api/queries.md#get-entries):

{% tabs %}
{% tab title="app.js" %}

```javascript
...
 
var echoDB;

// Query echo3D
fetch('https://api.echo3D.com/query?key=' + API_KEY)
.then((response) => response.json())
.then((json) => {
  // Store database
  echoDB = json; // The JSON response
})
.catch((error) => {
  console.error(error);
});
  
...
```

{% endtab %}
{% endtabs %}

You will be able to validate your API key and retrieve the [database entries](/api/objects.md#2-entries-database) as follows:

```javascript
var apiKey = echoDB.apiKey;
var db = Object.values(echoDB.db);
```


---

# 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.echo3d.com/javascript/fetching-data.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.