This page will tell you how to get started on making a datapack for Cosmic Horizons.
Important info for reading these docs:
If a JSON key is followed by a trailing underscore (e.g. "key_" but not "this_key"), it means that it can be written as anything. (You don’t have to include the _ either).
Example
So JSON in the docs like:
"key": int
"key_data": int
"keyname_": int
can be written as:
"key": 1
"key_data": 2
"my_key": 3
OR
"key": 1
"key_data": 2
"the_fancy_key": 3
etc.
WIP