Show HN: Finicity API Client for easy financial data

I created this after trying to use Finicity's API for my personal project. This handles authorization, endpoints and parameters, paging, mapping responses to typed objects.

Note that Plaid has a similar but official Python API library. But so far as I know, it only handles the authorization and endpoints, not the paging and mapping responses to objects.

I'm a little confused why companies whose product is an API don't create robust client libraries as they can do so better and more cheaply than their customers (and only once). If anyone can shed light on why they don't, I would be interested to know.