# Authentication All APIs require an authentication token. This token is a secret key that is specific to your app and will be provided to you. Please keep the key secure, as it will allow the holder to [create new wallets](/apis/nft-wallets.md) and [transfer NFTs](/apis/transfers.md) out of wallets as well. You will need to pass the authentication token in the `"Authorization"` header when making an API call. --- # 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.nftyverse.com/apis/authentication.md?ask= ``` 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.