> For the complete documentation index, see [llms.txt](https://docs.didomi.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.didomi.io/tracker-and-vendor-discovery/introduction/whitelist-tracker-and-vendor-discovery.md).

# Whitelist tracker and vendor discovery

The Didomi tracker and vendor discovery utilizes [a bot ](/tracker-and-vendor-discovery/introduction.md#bot-navigation)to scan your configured domains and extract the information relevant to your compliance with GDPR regulations. However, if your domain is equipped with bot security tools (e.g. [CAPTCHA](https://www.cloudflare.com/learning/bots/how-captchas-work/)) the Didomi bot will receive an error when attempting to access your domain and will need to be added to your domain's whitelist so that it can successfully scrape pages for compliance data.

{% hint style="info" %}
A whitelist refers to a registry of entities that are permitted to access/interact with your domain. 
{% endhint %}

When the Didomi bot is scraping a domain, it will send a **user agent (UA)** containing the string `Didomi/`.

{% code overflow="wrap" %}

```
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36 Didomi/1.0
```

{% endcode %}

If your organization utilizes a bot protection solution, whitelist the user agent (UA) sent out by the Didomi bot by allowing user agents that contain the `Didomi/` string.

The full user agent (UA) can change regularly except for the `Didomi/` string. 

{% hint style="warning" %}
**Note**: For organizations who have subscribed to the Didomi Advanced Compliance Monitoring module, you can define a custom user agent (UA) that will be used by the Didomi bot.
{% endhint %}


---

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