StaxInvesting vs Tradier: A Broker With an API Is Not an Execution Layer
This comparison contains a category error worth clearing up, because a lot of people searching for it are actually asking a different question. Tradier is a regulated brokerage whose API powers dozens of other platforms. StaxInvesting is an execution layer that connects to a brokerage. They are not substitutes — and the real decision hiding underneath is whether you want to build the execution layer yourself.