# xPlug Integration Hub

Welcome to the xPlug Integration Hub the central guide for connecting your application to the x402 payment protocol on Solana.

xPlug simplifies on-chain payments by combining the speed of Solana, the trustless verification of x402, and a plug-and-play developer experience. Whether you’re a dApp builder, a merchant, or an integrator, this hub provides everything you need to start building with xPlug.

Through this documentation, you’ll learn how to:

* Integrate your app using xPlug SDK
* Accept verified payments via xPlug Facilitators
* Enable gasless, secure, and transparent transactions
* Support multi-token payments using Solana SPL assets

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[Merchants](/integration/merchants/merchant-introduction.md)
{% endcontent-ref %}

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[Clients](/integration/clients/clients-introduction.md)
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[Facilitators](/integration/facilitators/facilitators-introduction.md)
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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.xplug.io/integration/readme.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.