In-Game Reference Files

X4 ships interactive reference files that document all available script operations, properties, and keywords. Extract these for offline use:

x4cat extract "/path/to/X4 Foundations" -o ./reference -g '*.html'
x4cat extract "/path/to/X4 Foundations" -o ./reference -g 'libraries/scriptproperties.*'

Available references

File	Description
scriptproperties.html	Interactive HTML reference for all MD/AI script properties, keywords, and datatypes. Open in a browser.
libraries/scriptproperties.xml	Machine-readable script properties (329 KB)
libraries/scriptproperties.xsd	Schema for scriptproperties.xml
libraries/scriptproperties.xsl	XSLT stylesheet for rendering scriptproperties.xml
jobeditor.html	Job definition editor/reference

The scriptproperties.html file is the single most useful modding reference – it documents every expression, property, event, action, and datatype available in MD and AI scripts.

VS Code integration: The X4CodeComplete VS Code extension provides autocompletion and syntax highlighting for X4 XML using these schema files.

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