> For the complete documentation index, see [llms.txt](https://docs.hashstack.finance/developers/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.hashstack.finance/developers/supply-and-borrow/borrow.md). # Borrow Borrow contracts follows ERC20 standard while using some mathematics of EIP 4626 to maintain the relationship between total debt and dTokens issued. dTokens are debt tokens that are issues when a user takes a loan and burnt on repayment/liquidation of loan. dTokens represent the share of total debt issued by the contract. They help determine the amount to be paid by user during repayment. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## 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, and the optional `goal` query parameter: ``` GET https://docs.hashstack.finance/developers/supply-and-borrow/borrow.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. 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.