# Introduction ## What is Worldbook? Worldbook is a highly optimized order book exchange that allows permissionless listing of tokens and is fully on-chain. ## Technical Overview Worldbook was built from first principles to tackle the challenges of bringing an order book exchange completely onto the blockchain while meticulously optimizing for gas performance and code size. This was achieved by implementing a custom algorithm comprising a beautiful symphony of advanced data structures and algorithms together with precision state updates to hyper-optimize the Worldbook contracts, allowing Worldbook to be a scalable EVM primitive protocol. --- # 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://world-book.gitbook.io/worldbook/worldbook/readme.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.