Check your broker before you sign up
The 28 brokers and exchanges that connect automatically now have a page each. Search by name or region and see exactly what syncs.
The first thing anyone wants to know is whether their broker is supported, and that deserves a better answer than a number in a feature list. The brokers page lists every institution, searchable, filterable by region.
Each one has its own page explaining what syncs from it and how the connection is made.
It says what it cannot do, too
Integrations that are still in development get their own section and are never presented as connectable. If yours is in there, the page tells you so and points you at importing a file instead.
Paper trading venues are marked as paper and left out of the headline count, so the number means real money institutions.