# Authentication

## Getting your API Key

Your **ExactBuyer API Key** provides you with unified access to all of our endpoints. To get your API Key please sign up for an account and [<mark style="color:blue;">**visit the API portal**</mark>](https://app.exactbuyer.com/api-access).

{% hint style="info" %}
&#x20;If you are having any issues with obtaining or using your API Key, please reach out to us at `support@exactbuyer.com.`
{% endhint %}

{% hint style="info" %}
Please note that your API key is what identifies you and grants you access to the ExactBuyer API. Do not reveal or give this key away to anyone else.
{% endhint %}

## Popular Use Cases

{% tabs %}
{% tab title="Audience Discovery" %}
Audience discovery is messy, and we're here to simplify it! \
\
Build customer audiences using our Audience Builder. Want beta access to our audience building Prospector API? [**Book a demo with us today**](https://www.exactbuyer.com/demo).
{% endtab %}

{% tab title="Lead Enrichment" %}
Q: What's better than a sign up? \
A: An enriched sign up!\
\
Use our [**Contact Enrichment**](https://docs.exactbuyer.com/contact-enrichment/enrichment) endpoint to get additional information on every lead that signs up for your App or Newsletter.&#x20;
{% endtab %}

{% tab title="CRM Enrichment" %}
Over **30%** of the contacts in your CRM will go stale each quarter. \
\
Ensure all of the details in your CRM are correct by using our [**Bulk Enrichment**](https://docs.exactbuyer.com/contact-enrichment/bulk-enrichment-api) endpoint.
{% endtab %}

{% tab title="Identity Resolution" %}
Identity resolution requires significant expertise in creating linkages between data sources. Through our data partnerships ExactBuyer powers a sophisticated real-time Enrichment API for Enterprises who depend on exceptional data quality.
{% endtab %}
{% endtabs %}

{% content-ref url="../contact-enrichment" %}
[contact-enrichment](https://docs.exactbuyer.com/contact-enrichment)
{% endcontent-ref %}


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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.exactbuyer.com/master/authentication.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.