# 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).

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