Yes could be FIX CTCI as that lists in the comparison table it does not need user auth.
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On Jul 29, 2022, at 11:11 AM, 闯ü谤驳别苍 Reinold via groups.io <TwsApiOnGroupsIo@...> wrote:
IBKR has several standard and custom integration options for institutions and large clients and you can even co-locate your servers with them. Some of the more common options
What you describe very likely does not use TWS API. Maybe they use FIX CTCI or even a much tighter custom integration.
闯ü谤驳别苍
PS Glad to hear you checked with IBKR.
