Install

You can install IB Lightning CLI from the following locations:

To use the CLI to interact with Interactive Brokers, you should have the Interactive Brokers (IBKR) Trader Workstation desktop application installed.
You should have an active Interactive Brokers account.
Check the "Enable ActiveX and Socket Clients" check box option in the Trader Workstation API configuration options.
Specifically:

Click on the File tab in Trader Workstation (TWS). Click on the “Global configuration” under the “Application Settings” section. Click on the “API-Settings” under the “Configuration” folder shown on the left-hand side panel. Check the “Enable ActiveX and Socket Clients” box. Configuring Trader Workstation for API usage.

Always test the CLI functions you wish to use with the IB 'paper' account before using with a real account.

Happy Trading!