thoughts about integrating akismet api w/ my express-based form endpoints

index.js

var akismet = require('akismet-api');

var client = akismet.client({
  key: process.env.AKISMET_API_KEY,
  blog: process.env.AKISMET_BLOG_URL
});

module.exports = client;

// verify akismet api key
client.verifyKey()
  .then(function(valid) {
    if (valid) {
      console.log('Valid key!');
    }
    else {
      console.log('Invalid key!');
    }
  })
  .catch(function(err) {
    console.log('Check failed: ' + err.message);
  });

// check for spam in form submission
client.checkSpam({
  user_ip : '123.123.123.123',              // Required!
  user_agent : 'MyUserAgent 1.0 Webkit',    // Required!
  referrer : req.headers.HTTP_REFERER,          // Required!
  permalink : 'https://myblog.com/myPost',
  comment_type : 'contact-form',
  comment_author : 'John Smith',
  comment_author_email : 'john.smith@gmail.com',
  comment_content : 'Very nice blog! Check out mine!'
}).then(function (err,spam) {
  })
  catch(function (err) {
  }).;

client.submitSpam({
  user_ip : '123.123.123.123',              // Required!
  user_agent : 'MyUserAgent 1.0 Webkit',    // Required!
  referrer : 'https://google.com',          // Required!
  permalink : 'https://myblog.com/myPost',
  comment_type : 'comment',
  comment_author : 'John Smith',
  comment_author_email : 'john.smith@gmail.com',
  comment_author_url : 'https://johnsblog.com',
  comment_content : 'Very nice blog! Check out mine!',
  is_test : true // Default value is false
}, function(err) {
  if (!err) {
    console.log('Spam reported!');
  }
});

client.submitHam({
  user_ip : '123.123.123.123',              // Required!
  user_agent : 'MyUserAgent 1.0 Webkit',    // Required!
  referrer : 'https://google.com',          // Required!
  permalink : 'https://myblog.com/myPost',
  comment_type : 'comment',
  comment_author : 'John Smith',
  comment_author_email : 'john.smith@gmail.com',
  comment_author_url : 'https://johnsblog.com',
  comment_content : 'Very nice blog! Check out mine!',
  is_test : true // Default value is false
}, function(err) {
  if (!err) {
    console.log('Non-spam reported!');
  }
});

links.txt

https://github.com/chrisfosterelli/akismet-api#readme
https://akismet.com/development/api/#detailed-docs