# Marketplace There are two kinds of trading that Catddle supports to provide the best trading experience for different types of items. ### AMMs (Automated Market Makers) For large supply items such as raw materials, we will provide AMMs, which offer an easy and quick trading experience. Sellers and buyers do not need to check the extensive market list, only the buy and sell buttons. Users who provide liquidity can earn rewards like other AMMs exchanges. ### Order Book The traditional order book works for certain items, like spaceship chips. Players can bid on items and wait for other players to take them. --- # 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.catddle.com/marketplace.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.