I'm not quite sure if this is the right group, because there are two API options (via TWS and via Client Portal API). ?I am looking for? https://www.interactivebrokers.com/campus/trading-lessons/requesting-market-data/
and can also retrieve conid's for given symbols. But if I now use? /iserver/secdef/info/ to retrieve data for a symbol I only get Error 404 - File not found Does this perhaps only work if you have paid for market data? Otherwise there is only cash on my securities account...?
