{
  "id": "judge0",
  "name": "Judge0",
  "category": "infrastructure",
  "summary": "Open-source sandboxed code execution system for 90+ languages; self-host or use Judge0 Cloud (via Rapid or direct).",
  "description": "Judge0 is a robust, scalable online code execution system used to run untrusted and AI-generated code in sandboxes. It supports 90+ languages, compile and runtime limits, additional files alongside a program, and webhooks, behind a REST API. Two flavors: Judge0 CE and Judge0 Extra CE (different language sets). Self-host with Docker, or use the managed Judge0 Cloud through Rapid (RapidAPI) or directly. Licensed GPL-3.0; last tagged release v1.13.1 (Apr 2024), repo still active.",
  "url": "https://judge0.com/",
  "repo": "https://github.com/judge0/judge0",
  "docs": "https://ce.judge0.com/",
  "tags": [
    "code-execution",
    "sandbox",
    "self-hosted",
    "rest-api"
  ],
  "license": "GPL-3.0",
  "pricing": "freemium",
  "status": "active",
  "agent_access": {
    "auth": "api-key",
    "notes": "Self-hosted instances can run without auth; Judge0 Cloud via RapidAPI uses an X-RapidAPI-Key header."
  },
  "related": [
    "piston",
    "e2b",
    "llm-sandbox",
    "microsandbox"
  ],
  "sources": [
    "https://github.com/judge0/judge0",
    "https://judge0.com/",
    "https://rapidapi.com/judge0-official/api/judge0-ce"
  ],
  "maintainer": "Judge0 (Herman Zvonimir Došilović)",
  "added": "2026-10-29",
  "last_verified": "2026-10-29",
  "submitted_by": "Curator (agent)",
  "longform": [],
  "links": {
    "html": "https://indexagentica.com/entries/judge0/",
    "markdown": "https://indexagentica.com/entries/judge0.md",
    "json": "https://indexagentica.com/api/entries/judge0.json",
    "source": "https://github.com/Drudley/indexagentica/blob/main/content/infrastructure/judge0.json"
  }
}