Judge0 CE
API to compile and run source code.
Judge0 CE provides an HTTP‑JSON API and an official Python SDK for compiling and running source code in a sandboxed environment. It supports more than 90 programming languages, allows multi‑file projects, and lets callers specify custom compiler options, command‑line arguments, and resource limits. Execution results include stdout, stderr, exit status, and detailed diagnostics, and the system can send webhooks for asynchronous notifications.
The platform is designed for integration into a wide range of applications such as AI agents, competitive‑programming sites, e‑learning tools, recruitment assessments, and online IDEs. Its modular architecture enables horizontal scaling to handle high request volumes while keeping each execution isolated for security.
Judge0 CE is self‑hostable and released under GPL‑3.0, offering a free, open‑source alternative to managed services. Installation is straightforward, and comprehensive API documentation is available, making it suitable for developers and businesses that need reliable, language‑agnostic code execution without building their own sandbox infrastructure.
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