> For the complete documentation index, see [llms.txt](https://developers.lfj.gg/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.lfj.gg/key-changes.md). # LB V2.2 Key Changes A summary of key changes in Liquidity Book V2.2: * Hooks are added to LBPair * Core functionality stays the same, existing functions have signatures unchanged ### LBFactory * Added functions to manage hooks on pairs (only LB\_HOOKS\_MANAGER\_ROLE) ### LBPair * Added functions to manage hooks (only LBFactory) * Added hooks on mint, burn, flashloan and transfer ### LBRouter * `Versions` struct is extended to accomodate V2.2 paths ### LBQuoter * Includes V2.2 paths ### LBHooksRewarders * New contract utilizing hooks * Rewards users that provide liquidity based on time spent in defined range around active bin --- # 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://developers.lfj.gg/key-changes.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.