For Adobe After Effects, Mac only. Rename selected layers based on the clipboard contents.

renameFromClipboard.jsx

//@target aftereffects
/**
 * 2025-04-07
 * @description This script renames selected layers in the active composition based on the clipboard content.
 */
(function renameFromClipboard() {
    var proj = app.project;
    app.beginUndoGroup("renameFromClipboard");
    // const newNames = app.getenv("argumentative")
    var newNames = readFromClipboard().split("\n");
    if (newNames.length !== proj.selection.length) {
        alert("The number of names in the clipboard does not match the number of selected layers.");
        return;
    }
    var selectedItemsSorted = proj.selection.sort(function (a, b) {
        return a.name < b.name ? -1 : 1;
    });
    for (var i = 0; i < selectedItemsSorted.length; i++) {
        var item = selectedItemsSorted[i];
        if (item instanceof CompItem) {
            item.name = newNames[i];
        }
    }
    function readFromClipboard() {
        var cmd = 'pbpaste';
        return system.callSystem(cmd);
    }
})();