# Trading Engine Rollie has an efficient trading engine enables users to participate in decentralized trading effortlessly. This trading engine gives users a comprehensive overview of the trading process and allows them to engage in DeFi markets easily. The trading engine shows users available token pairs, trading fees, and real-time pricing information with historical price charts to make informed trading decisions. Additionally, users can customize their preferences for the slippage tolerance level and gas fees. With Rollie's trading engine, users can participate in the growth of different projects and tokens and navigate the market effectively while trading in the decentralized finance ecosystem. --- # 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.rollie.finance/getting-started/trade/trading-engine.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.