# Authentication

The ChainVine API uses API keys and domain allowlisting to authenticate requests depending on where you want to use it.

## For the Browser

**Recommendation**

Setup [domain allowlisting](/developers/sdk/classes-and-functions/authentication/allow-listing-a-domain.md) for your dApp to authenticate SDK requests.

## For the Server

Use [API Keys](/developers/sdk/classes-and-functions/authentication/getting-your-api-key.md) to authenticate and authorize requests from your servers.


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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.chainvine.xyz/developers/sdk/classes-and-functions/authentication.md?ask=<question>
```

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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.