# Core All recipes and strategies are executed through the Core system of contracts. Core contracts implement actions and triggers alongside authorization handling and other functionalities. All contracts except `DFSRegistry` and auth contracts,`ProxyAuth` and `SafeModuleAuth`, are upgradable (through a time lock), but updates to the core system should not be frequent. --- # 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.defisaver.com/protocol/core.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.