We're really excited to partner with Pubnub this month, and challenge you to build something that used both our APIs.

Nexmo provides global communication APIs that make interfacing with users over ubiquitous channels like SMS and Voice simple. Because identity is closely tied to mobile devices, Nexmo also provides identity related APIs, Verify - a number verification / second factor API, and Number Insight - an API that provides data about a number, to use when evaluating business decisions.

PubNub is a secure global Data Stream Network (DSN) and easy to use API that enables our customers to connect, scale, and manage realtime applications and IoT devices. With over 70 SDKs for every platform, 250ms worldwide data transfer times, and scalability for hundreds of millions of devices, PubNub’s unique infrastructure gives you the ability to easily connect and operate world-class realtime applications and IoT devices. Signup here!

What should you build? Well, that's up to you. You could build a cross platform chat app that supports web, mobile, and SMS. You could build a realtime dashboard for an automated phone system, showing what menus live calls are hearing, and use PubNub's reply features to reply traffic or even individual calls. You could use a phone's dial pad to as a controller for a web based game.

Looking for Inspiration? Check out this post on how Tim built a phonecall powered photobooth using Nexmo, PubNub and Github.

Need help hacking? Post your Nexmo API key (not secret) in this thread to have some API credit added. 

What about the prizes you ask? Like drones? How about drones with HD cameras? There's a Bebop up for grabs to the project that best uses the PubNub API. And if your project is the best use of the Nexmo API, we've got a GoPro Hero 4 Black (perfect if you already have the drone, but not a camera).

Bonus: Every project must provide some way for us to test what was built; but we'd love for you to show us what you've built with a screencast of your project. While it's not required, it will set your project apart. And, for everyone that includes a screencast, we'll send out a random Bag of SWAG. 

Nexmo Docs & Resources:

PubNub Docs:




  • This contest is open only to legal residents of the United States and other locations where this contest is not prohibited or restricted by law,

  • age eighteen (18) or over,

  • excluding employees of Company and members of their immediate families, and

  • excluding entities (and their personnel and consultants) that provide services competitive with any of Company or its services.


  • Wholly original, and created during the contest.

  • Use Nexmo's APIs as authorized in the applicable documentation and the terms and conditions located at www.nexmo.com/terms-use.

  • Provided Nexmo access to test the submission. 

Hackathon Sponsors


Best Use of Nexmo

GoPro Hero4 Black

Best Use of PubNub

Parrot Bebop Drone

Devpost Achievements

Submitting to this hackathon could earn you:

How to enter

  • Register on Challenge Post
  • Check The Documentation
  • Create something that uses the Nexmo and PubNub APIs.
  • Submit what you've built, and a way to test it, through Challenge Post before 11:45 PM on September 30th (GMT)


Tim Lytle

Tim Lytle
Developer Guy, Nexmo

Tomomi Imura

Tomomi Imura
Sr. Evangelist, PubNub

Judging Criteria

  • Best Use of Nexmo
    How well does the integration use Nexmo's APIs? That use should be an integral part of the submission.
  • Best Use of PubNub
    How well does the integration use PubNub's APIs? That use should be an integral part of the submission.
  • Overall Execution
    Does this submission seem complete? Does it work well? How polished is it?

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