Quick little JXA (Javascript for Automation) for MacOS, just get the Finder selection and change it into paths. Suitable for a CLI workflow.

finderselection.js

#!/usr/bin/osascript

// 2022-11-04
// returns target of front window if no actual selection

// prints the active Finder selection as POSIX paths, 
// separated by newlines, ready to be eaten up by some other process
// I use in Fish shell like:
// for f in (finderselection.js) … etc

(() => {
	function posixPath(url) {
		return $.NSURL.alloc.initWithString(url).fileSystemRepresentation
	}

	const app = Application("Finder");
	app.includeStandardAdditions = true;

	let result = [];

	const selection = app.selection();
	if (selection.length > 0) {
		selection.forEach((i) => {
			let x = posixPath(i.url());
			result.push(x)
		});
	} else {
		// no selection? no worries
		// return the target of the front finderwindow instead
		result.push(posixPath(app.finderWindows[0].target().url()))
	}

	return result.join("\n")
})();

If using Fish shell, you could use it like this:

for f in (osascript ~/bin/finderselection.js )
 # do something here
end

… for example