Interactive Brokers Symbol list

As far as I am aware IB does not offer a symbol list. But the good news is it is easy and free to get elsewhere. Eoddata.com is a good source of it and you can download them, or automate it rather easily.

Go here and just click the download link at the top right of the table: EodData Symbol List

Not sure what language your using for the IB API but I have simple tutorial in C# that covers reading the tickers for stocks and options on my website: Get Real-Time Stock Data from the Interactive Brokers API