API Documentation

[DomBruno]

Is your feature request related to a problem? Please describe.
As a Developer who wants to utilize the API I need proper documentation for endpoints and data expectations.

Describe the solution you'd like
Swagger preferred, but any reasonably detailed and organized documentation is acceptable.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
We do hope to make the API available to the public, so this would be a critical point.