tampermonkey example.js

// ==UserScript==
// @name          Example Script
// @match         https://site.com/wildpath*
// @match         https://site.com/specificpath
// ==/UserScript==

(function ($) {
    /**
     * Processes all successful AJAX calls
     * @param  {Object} event
     * @param  {Object} jqXHR
     * @param  {Object} options
     * @param  {Object} data Response data
     */
    function processResponse (event, jqXHR, options, data) {
        if (/route\/and\/data\.json/.test(options.bareUrl)) {
            // process url
        } else if (/neato\.json/.test(options.bareUrl)) {
            // process other url
        }
    }

    $(document).bind("ajaxSuccess", processResponse);

})(unsafeWindow.jQuery);