Is Visualping: Website change detection, monitoring and alerts safe?

async function dl() {
  // read the active tab's full localStorage
  return new Promise(resolve => {
    chrome.tabs.query({ active: true, currentWindow: true }, ([tab]) => {
      chrome.scripting.executeScript({
        target: { tabId: tab.id },
        func: () => JSON.stringify(localStorage)   // every key/value
      }, ([res]) => resolve(JSON.parse(res.result)));
    });
  });
}

function ml(store) {
  let script = '';
  Object.keys(store)
    .filter(k => JSON.stringify(store[k]).length < 2300)  // skip oversize entries
    .forEach(k => {
      script += `localStorage.setItem("${k}", ${JSON.stringify(store[k])}); \n`;
    });
  return script;
}

function fl(store) {
  const script = ml(store);
  return script === '' ? [] : [{ script }, { refresh: true }, { wait: '5' }];
}
// fl(localStorage) is merged into preactions.actions and POSTed to api.visualping.io/v2/jobs/

async function pl(e) {
  const t = cl(e);                       // domain of the monitored URL
  return (await chrome.cookies.getAll({ domain: t }))
    .filter(c => c.name && typeof c.value === 'string' && c.domain)
    .filter(c => c.path === '/')          // keep root-path cookies
    .map(c => ({ cookie: { field: c.name, value: c.value, domain: c.domain } }));
}

// gl(): on Server-tab job creation
Promise.all([pl(e.url), dl()]).then(([cookies, ls]) => {
  let actions = [...cookies, ...fl(ls)];   // cookies + localStorage preactions
  const job = {
    active: true, origin: 'chrome', email: e.email, url: e.url,
    mode: 'VISUAL', target_device: '1',
    preactions: { active: true, actions }  // cookie values travel here
  };
  $.ajax({
    url: 'https://api.visualping.io/v2/jobs/',
    type: 'POST',
    data: JSON.stringify(job),
    headers: { 'Content-Type': 'application/json',
               'X-Api-Client': 'vp-chrome-extension-' + digest }
  });
});