# MDEX upgrades its cross-chain scope by integrating with the cross-chain protocol iSwap MDEX upgrades its cross-chain scope by integrating with the cross-chain protocol iSwap to meet the rapidly growing demand in cross-chain. More specifically, iSwap Cross-chain Bridge feature is now embedded in MDEX. Users can cross USDT between HECO and BSC and a 0.2% handle fee will be charged from iSwap. It is free of charge for transactions greater than 10,000 USDT. iSwap is a decentralized cross-chain protocol deployed on multiple public chains. Currently, it is available on five chains: HECO, BSC, Polygon, ETH and OKExChain. With distinctive strengths of high security and speed, as well as low transaction fees, it supports both cross-chain and aggregated transactions. It is dedicated to allowing all users to enjoy ultra-low fees and low slippage to complete the swap of assets between single or dual chains. Disclaimer This cross-chain feature is provided by the third party iSwap who is responsible for the service. Please contact iSwap for any problem you come across. It's recommended to understand the cross-chain process and iSwap before using this service. MDEX is not responsible for any losses caused by artificial error, market fluctuations, and other uncertainties. There are risks involved in cross-chain assets. Please be alarmed! MDEX Team March 30 2022 --- # 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://mdexdoc.gitbook.io/doc/announcement/mdex-upgrades-its-cross-chain-scope-by-integrating-with-the-cross-chain-protocol-iswap.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.