Calling developers! Square is live with another exciting hackathon. We’re looking for you to build an app or add new features to an existing app by using Square’s APIs and other emerging technologies. The Square developer platform enables you to build your own applications with their APIs and developer tools, or build useful applications to help sellers scale and grow their businesses as a part of the Square ecosystem. There’s so much you can build with Square's full suite of APIs and developer tools, from payment to point-of-sale and beyond.

Choose from any of the following categories: 

  • Buyer, seller, or staff-focused experiences 

  • Square Terminal API 

  • Square Subscriptions API 

  • Square Invoices API

  • Geofencing or augmented reality

  • Generative AI

Get Started with the Developer Guides


What to Build

Build new apps or app features with emerging technologies with Square.


What to Submit

  • Square Application ID

  • Provide access to working application (test account, website, sandbox / production) - Instructions must be provided for judges to access

  • Include a video (about 3 minutes) that demonstrates your submission. Videos must be uploaded to YouTube, Vimeo, or Facebook Video and made public.

  • Provide a text description of your project that explains how the new features were implemented

  • Identify which category you are submitting into


Submission Specifics 

  • The Project must be capable of being successfully installed and must function as depicted in the video and/or expressed in the text description.

  • The Project must run on the platform for which is specified in the Submission Requirements. 

  • The Entrant must make the Project available free of charge and without any restriction

  • Multiple Submissions: An Entrant may submit more than one Submission, however, each submission must be unique and substantially different

  • All Submission materials must be in English

Your complete submission form on Devpost before the final deadline.

Hackathon Sponsors


$81,000 in prizes

First Place Overall

• $20,000 USD
• Social recognition by Square to developer community
• 60 min. meeting with Square product team

Second Place Overall

• $15,000 USD
• Social recognition by Square

Best reinvention or unification of in-person and online experiences

• $12,000 USD
• Social recognition by Square

Most potential for positive change

• $10,000 USD
• Social recognition by Square

Best use of 1 or more of the following APIs: Terminal API app, Subscriptions API, Invoices API

• $7,000 USD
• Social recognition by Square

Best use of geofencing or augmented reality

• $5,000 USD
• Social recognition by Square

Best use of Generative AI

• $5,000 USD
• Social recognition by Square

Most Impressive Technical Implementation

• $2,000 USD

Most Valuable Feedback (5)

• $1,000 USD for up to (5) feedback submissions

Devpost Achievements

Submitting to this hackathon could earn you:


Shannon Skipper

Shannon Skipper
Head of Developer Relations, Square

Richard Moot

Richard Moot
Developer Advocate Lead, Square

Eva Sasson

Eva Sasson
Product Marketing, Developer Experience, Square

Anthony Giuliano

Anthony Giuliano
Developer Advocate

Jordan Bergero

Jordan Bergero
Developer Relations Engineer

Judging Criteria

  • Quality of the Idea
    Includes creativity and originality of the idea.
  • Implementation of the Idea
    Includes how well the idea was executed by the developer.
  • Potential Value to Business
    Includes the extent to which the app can help businesses grow.
  • Integrative experience
    Includes how well the app integrates the in-person and virtual experiences.
  • Potential Community Impact
    Includes how impactful the app will be as a driver for positive change within the community.

Questions? Email the hackathon manager

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