# JSON-RPC API 6.0

Before you start using the 2Checkout API to place orders with credit cards, check your **PCI DSS compliance status**. Find out more details about what PCI compliance means and what you should do to be PCI compliant [here](/get-started/getting-started/merchant-pci-compliance.md).

<table data-card-size="large" data-view="cards"><thead><tr><th></th><th></th><th></th><th></th></tr></thead><tbody><tr><td>Authentication process in the 2Checkout system.</td><td><a href="/pages/guMsr8kR5CpajupZPTmC" class="button primary" data-icon="key">Authentication</a></td><td></td><td></td></tr><tr><td>Perform easy account management via API Requests.</td><td><a href="/pages/daYTE4lsezWJs8XDw1LV" class="button primary" data-icon="file-arrow-up">API Requests</a></td><td>Objects returned as API responses.</td><td><a href="/pages/pUIx9MvcO8YPSoJ1EmzU" class="button primary" data-icon="file-arrow-down">API Responses</a></td></tr><tr><td>Learn how to handle APIv6 error codes.<br><br><br></td><td><a href="/pages/jGXCU3P9VYWR6DIsTFxY" class="button primary" data-icon="circle-x">API 6.0 Error Codes</a></td><td></td><td></td></tr><tr><td>Increase the security of online card transactions by checking customer identities before allowing them to finalize the purchase.</td><td><a href="/pages/sqL3jR4zPBUBo0wm5ICf" class="button primary" data-icon="shield-check">3D Secure flow for API orders</a></td><td></td><td></td></tr></tbody></table>


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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.2checkout.com/json-rpc-api-reference/json-rpc-api-6.0.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.