You can disable access to root nodes in Content and Media by using a true/false property on the root node with the alias "hc_disable"
"WithProperties"" Parameter will give you all the properties on each node except if you have properties that start with "hc_". To get them you need to use "WithContent"
If WithProperties is not set only default properties are retrieved. Those should be enough to render the navigation
Get all child pages with properties and Content. Good to use to build all the page with one query
Only properties that start with the alias "hc_" are fetched
GetChildren?key=885398b9-344d-46f9-afc2-ada8e0a642b1&WithProperties=true&WithContent=true
Get list of all Domains
GetDomains
Get list of all Languages
GetLanguages
Get list of all Translations
GetTranslations
Other parameters are Culture and ExceptContentTypes