Introduction - If you have any usage issues, please Google them yourself
The trading shim is a command-line and dbms controlled interface to the socket-based API of Interactive Brokers Trader Workstation, abbreviated as the IB tws socket api, or simply tws . That api has a number of advantages for our purposes, including the freely available Trader Workstation, comprehensive feeds and archives for tick and history data, a paper account ideal for software testing, and low transaction costs