Here is a list of all documented files with brief descriptions:

[detail level 123]

▼ include
▼ xkbcommon
xkbcommon-compose.h	Libxkbcommon Compose API - support for Compose and dead-keys
xkbcommon-keysyms.h	Key symbols (keysyms) definitions
xkbcommon-names.h	Predefined names for common modifiers and LEDs
xkbcommon-x11.h	Libxkbcommon-x11 API - Additional X11 support for xkbcommon
xkbcommon.h	Main libxkbcommon API
xkbregistry.h	Query for available RMLVO