# Price Oracle Many financial instruments rely on asset prices in order to function properly. For example, the [Lending](/instruments/lending.md) and [Borrowing](/instruments/borrowing.md) instruments calculate the required collateral based on the price of the principal and collateral tokens. For the Lending and Borrowing instruments, it's the Service Providers' responsibility to provide price oracle to the underlying issuances. The Service Providers can choose to use a fixed value, to deploy a price oracle which are updated as needed, or to use well-known third-party price oracles. In order to reduce the user friction, NUTS Platform provides a reference price oracle contract which could be adopted by Service Providers. ## Price Data Sources --- # 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.nuts.finance/implementation/price-oracle.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.