Judge0 CE - API Docs

About

Judge0 is a robust, scalable, and open-source online code execution system. You can use it to build a wide range of applications that need online code execution features. Some examples include competitive programming platforms, e-learning platforms, candidate assessment and recruitment platforms, online code editors, online IDEs, and many more.

In our research paper Robust and Scalable Online Code Execution System, we present Judge0's modern modular architecture that can be easily deployed and scaled. We study its design, comment on the various challenges in building such systems, and compare it with other available online code execution systems and online judge systems.

To see Judge0 in action, try Judge0 IDE - our free and open-source online code editor. You can also try using a dummy client that can help you explore and test most of the features of Judge0.

Easily integrate online code editor with code execution (a.k.a. online compiler) to your website with our embeddable web widgets.

Features

Quick and easy installation
Rich and verbose API documentation
Scalable architecture
Sandboxed compilation and execution
Support for 60+ languages
Compilation and execution of multi-file programs
Support for additional files alongside the user's program
Support for custom user-defined compiler options, command-line arguments, and time and memory limits
Detailed execution results
Webhooks (HTTP callbacks)

Get Started

Get started with Judge0 today on Sulu and get 20K Free Submissions to try it when you sign up.

You can also get started with the FREE Basic Plan on RapidAPI or host it yourself.

You can find our detailed plans and pricing here.

Why should you use Judge0 on Sulu or RapidAPI?

Our infrastructure allows you to focus on building your product and forget about the know-how of maintaining and scaling Judge0.

Sulu or RapidAPI plans are not (good) enough for you?

Let's talk. Contact us.

Flavors

Judge0 comes in two flavors: Judge0 CE and Judge0 Extra CE. They differ mostly in the supported languages.

You can find the source code for Judge0 CE on the master branch, while you can find the source code for Judge0 Extra CE on the extra branch.

Judge0 Extra CE is also available on RapidAPI.

Version

This document describes Judge0 CE v1.13.0.

Date and time formats

ISO 8601 standard is used.

Example: 2016-09-11T10:19:35Z

License

Judge0 is licensed under the GNU General Public License v3.0.

Donate

Your are more than welcome to support Judge0 development on Patreon, via PayPal or Revolut. Thank you.