Trying to post data with Request NPM from NodeJS to localhost (Loopback Swagger API)

When I try to post an instance to loopback from within nodejs using this code I don't get any errors but I don't get any data posted either?

//NPM Package (request)
var request = require('request'); 

// Address of Loopback API on the same server
var api = "http://localhost:3000/api/devices"; 

//JSON Construction
var deviceInstance = {
     "manufacturer": "manufacturer",
     "model": "model"
   //etc
}

// NPM (request)
request({
   url: api,
   method: "POST",
   headers: {"Accept: application/json"},
   json: true,
   body: deviceInstance
}, function (error, response, body) {
      if(error) {
        console.log('error: '+ error);
      } else {
        console.log('document saved to api')
        console.log(body);
        console.log(response);
      }
});

process.exit();

I'm not getting any response or erros from the server which is the same machine. If I try the same call in postman (windows app) it actually creates an instance in the API so why isn't my local node connecting to the API?

from Trying to post data with Request NPM from NodeJS to localhost (Loopback Swagger API)