wix-router.WixRouterRequest userAgent

You can achieve that, just pay attention, that routers will answer the URL path under the convention the router function name is written.

For example:

export function myRouter_Router(request) {
 ...
}

Will be called for any requests for URLs:
https:///myRouter/…
https://.wixsite.com//myRouter/…

Which might be different than your page urls.

Regards,
Genry.