One option would be to create a new URL generating function for your account URLs. You could put it in your routes file, or include it before your routes execute:

if (!function_exists('aurl'))
{
    /**
     * Generate an account url for the application.
     *
     * @param  string  $path
     * @param  mixed   $parameters
     * @param  bool    $secure
     * @return string
     */
    function aurl($path = null, $parameters = array(), $secure = null)
    {
        // Here you would include logic to find the $account_id, or even use it from outside
        // the function's scope.
        // I'm using this as an example:
        $account_id = Auth::user()->account_id;
        
        return app('url')->to($path, array_merge(array($account_id), $parameters), $secure);
    }
}

Then, inside of your views, you could just use the new aurl function when you want a to create an account URL without specifying the account ID every time.

There are probably better ways to accomplish this, but this would work if you needed something quickly.

I like that, but I wonder if there is a way to overwrite or extend the url helpers.

I'm not sure if there is a Laravel way to overwrite the URL helpers, since they are just defined in a helpers.php file and auto-loaded with Composer.

There are ways to override functions that do not belong to an object in PHP, but I really think that is overkill, requires an extension and much more of a hassle than it is worth.

However, the above function is identical to the url helper function. I suppose the return line could be written as:

return url($path, array_merge(array($account_id), $parameters), $secure);

But it is not much of a difference.