# Via Smart Contract

To query passport attributes, your DApp reads the [QuadReader](/integration/additional-information/smart-contracts.md) smart contract to check the value of certain *attributes*. A passport attribute represents data about the user, such as anti-money laundering (AML) risk score, country of government ID, or any other data stored on their passport. You can find attributes supported by Quadrata Passport [here](/integration/introduction/passport-attributes.md).

<figure><img src="/files/SZyjupMTUFcHXMxNePKn" alt=""><figcaption></figcaption></figure>


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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.quadrata.com/integration/how-to-integrate/query-attributes/via-smart-contract.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.