I made an app to convert the MsgPack files in the boundless game dir to human-readable indented JSON. I’ve put it on github here and made a release with a compiled version that anyone can download.
Usage
-i, --input Required. Specifies the input directory or MsgPack file to read.
-o, --output Required. Specifies the output directory to write json file(s).
--help Display this help screen.
--version Display version information.