# Set up Den - [Sign In With Ethereum](https://docs.onchainden.com/set-up-den/sign-in-with-ethereum.md): A modern sign in experience for an onchain world - [Using Existing Safes](https://docs.onchainden.com/set-up-den/using-existing-safes.md): Den automatically fetches any existing Safes - [Creating and Managing Safes](https://docs.onchainden.com/set-up-den/creating-and-managing-safes.md): Den lets you create new Safes, modify Safe owners, and update the threshold --- # 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.onchainden.com/set-up-den.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.