GTT

A GTT order is a type of limit order that remains active until it is either filled or canceled by the user. This is useful for traders who want to buy or sell a security at a specific price but are not able to monitor the market continuously.

The Trade API mentioned here likely allows traders to interact with a trading platform programmatically, enabling them to place GTT orders without needing to use a graphical user interface (GUI). The API would typically involve sending HTTP requests with specific parameters to a server, which would then execute the order on behalf of the trader.