I am currently using this script tag for web messaging:
<script type="text/javascript" charset="utf-8">
(function (g, e, n, es, ys) {
g['_genesysJs'] = e;
g[e] = g[e] || function () {
(g[e].q = g[e].q || []).push(arguments)
};
g[e].t = 1 * new Date();
g[e].c = es;
ys = document.createElement('script'); ys.async = 1; ys.src = n; ys.charset = 'utf-8'; document.head.appendChild(ys);
})(window, 'Genesys', 'https://apps.usw2.pure.cloud/genesys-bootstrap/genesys.min.js', {
environment: '',
deploymentId: ''
});
</script>