Visual Depiction of Warnings and Errors

Methods, systems and computer-readable storage media disclosed herein provide visual depictions of warnings and errors. An example method includes detecting, using a computing device, a change in a design of a trading algorithm. The trading algorithm is defined by a user-specified arrangement of blocks representing trading functionality. The example method includes determining, using the computing device, whether the trading algorithm complies with a trading algorithm rule. The example method includes facilitating, using the computing device, at least one of warning handling or error handling when the trading algorithm does not comply with the trading algorithm rule. Facilitating warning handling or error handling includes displaying a warning or an error to the user in connection with the trading algorithm before the trading algorithm is available for execution.