I wanted to use DigitalOcean with Ansible. The python scripts don't work, so, I wrote this 70 liner node.js script.

digitalocean.js

#!/usr/bin/env node

var token = process.env.DIGITALOCEAN_TOKEN;

if(!token) {
  console.error("Please specify a DIGITALOCEAN_TOKEN environment variable");
  process.exit(1);
}

var request = require('request');

request.get({
  method: "GET",
  uri: "https://api.digitalocean.com/v2/droplets",
  json: true,
  headers: {
    "Authorization": "Bearer " + token 
  }
}, function(error, response, body) {
  var inventory = {};

  body.droplets.forEach(function(droplet) {
    findPublicNetwork(droplet.networks).forEach(function(network){
      var ip = network.ip_address;

      safePush(inventory, droplet['name'], ip);
      safePush(inventory, 'region_'+droplet['region'].slug, ip)
      safePush(inventory, 'image_' +droplet['image'].slug, ip)
      safePush(inventory, 'size_'  +droplet['size'].slug, ip)
      safePush(inventory, 'status_'+droplet['status'], ip)
    });

    findPublicNetwork(droplet.networks, "v6").forEach(function(network){
      safePush(inventory, 'ipv6', network.ip_address);
    });
  });

  console.log(JSON.stringify(inventory, null, "\t"));
});

function safePush(obj, key, item){
  if(obj[key]){
    obj[key].push(item);
  }else{
    obj[key] = [item];
  }
}

function findPublicNetwork(networks, type){
  if(!type || type !== 'v6') type = "v4";

  return networks[type].filter(function(network){
    return network.type === "public";
  })
}

Updated it to be cleaner, support ipv6 on machines (see section "ipv6" in results), and to correctly fetch region/image/size/status groupings. Also dropped support for querying directly by droplet id, because, uh.. why would you want to do that?