click-signup-include-additional-info-admonition
tip
You'll see in the endpoint reference for POST /1-click that it supports additional inputs.
If you already have any of these, include them in the request body. (But, we don't recommend prompting for any of them yet if you don't already have them.)
Here's why: You'll see later in this guide that, if we can't source data for the user based on the inputs you provide, you can prompt the user for an additional input(s) and then make another API call. If for any reason you already have this information, you should include at this step so no further call will be necessary.