node.js

var request = require("request");

// Exchange credentials for a temporary access token (valid 1h)
var options = { method: 'POST',
  url: 'https://auth.mozilla.auth0.com/oauth/token',
  headers: { 'content-type': 'application/json' },
  body: '{"client_id":"CLIENT ID GOES HERE","client_secret":"SECRET GOES HERE","audience":"api.sso.mozilla.com","grant_type":"client_credentials"}' };

request(options, function (error, response, token) {
  if (error) throw new Error(error);

  // Talk to the API
  // See https://github.com/mozilla-iam/cis/blob/master/docs/PersonAPI.md for more examples / routes
  options = { method: 'GET',
    url: 'https://person.api.sso.mozilla.com/v2/user/primary_email/gdestuynder@mozilla.com',
    headers: { authorization: 'Bearer '+token.access_token } };

  request(options, function (error, response, body) {
    if (error) throw new Error(error);
    console.log(body);
    });
});