> ## Documentation Index
> Fetch the complete documentation index at: https://docs.compliapi.com/llms.txt
> Use this file to discover all available pages before exploring further.

# VPN Detection

> Detect whether an IP address is using a VPN

Also callable without a path parameter — `GET /vpn` evaluates the calling client's IP.

<ParamField path="ip_address" type="string">
  The IP address to evaluate. Omit (call `GET /vpn`) to evaluate the calling client's IP.
</ParamField>

```json Example response theme={null}
{ "ip": "172.217.22.14", "vpn": false }
```

`vpn` is `"unknown"` when privacy data is unavailable for the IP.


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.