> For the complete documentation index, see [llms.txt](https://docs.polystream.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.polystream.xyz/polystream/crypto-fiat-ramp.md).

# Crypto-Fiat Ramp

### Architecture

<figure><img src="/files/zfHkrElTIYrTZqCB804O" alt=""><figcaption><p>Architecture diagram</p></figcaption></figure>

The crypto-fiat on/off ramp solution in the Polystream frontend uses three main components:

1. **Privy Authentication**: Handles user identity and wallet management
2. **Transak Integration**: Provides the fiat-to-crypto conversion services
3. **Native UI Integration**: Creates a seamless user experience within the app


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