The trading API is an important part of our user interface, as it allows users to access and manage their investments quickly and easily. Without the API, users would have to manually enter their trades and track their investments, which can be time consuming and tedious. Fortunately, the API is still available, so users can take advantage of the convenience and speed of automated trading. With the API, users can quickly and easily access their accounts, view their portfolios, and execute trades with just a few clicks. This makes trading more efficient and allows users to make better decisions about their investments.