# What personal details have to be stored to use NFT Butler? To place offer requests on your behalf, it's necessary to configure at least one ETH Wallet along with its private key. We highly recommend setting up a new wallet specifically for this use case, containing only a limited amount of WETH to ensure that 1-2 bids can be accepted. Please be assured that the private key will always remain encrypted and securely stored on your client device; it will never be transmitted or stored elsewhere. We strongly emphasize the importance of never sharing your private key outside of the NFT Butler application. --- # 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.nftbutler.io/nft-butler/more-resources/faq/what-personal-details-have-to-be-stored-to-use-nft-butler.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.