> For the complete documentation index, see [llms.txt](https://docs.defisaver.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.defisaver.com/protocol/core.md).

# 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.