What are limitations of the 3rd party Web API?

For extensive documentation of our API offerings, please visit the IBKR API Home. Here, you will find resources to get started with the Web API, TWS API, Excel APIs, FIX and Third-Party Integrations…

The 3rd Party REST Web API is an interface which can be used by third party companies in their applications to connect users to their IBKR accounts. Unlike other API technologies, access requires an application with review by IBKR Compliance.

Key features include:…

IBKR does not offer a service whereby a cashier or any other form of guaranteed check can be issued from an account, either to the account holder or a 3rd party. Qualifying clients who wish to send USD to a 3rd party may submit a withdraw to a third party…

Though the ability to do backtesting analysis of custom algorithms is not offered by IBKR software, historical data is available from the TWS API with corresponding market data subscriptions which can be received by an external third party API application and potentially used for backtesting studies. For information about which 3rd party API applications support backtesting it is best to contact the 3rd party software vendor directly…