FIX API
Designed to allow firms and Independent Software Vendors (ISVs) to easily integrate their order entry and routing systems with CME. It is a software library of functions that enables a member's order management system to communicate with exchange order routing systems. Member firms can run the CME FIX API on their computers to electronically send orders to and receive fills from the CME Globex platform or the firm's exchange floor operations by way of the firm's internal order management system. Chicago Mercantile Exchange Glossary