Judge0 CE
Online code execution system
- Authentication
- API Key
- HTTPS
- Yes
- CORS
- Unknown
- Category
- Programming
- Data source
- public-apis + marcelscruz
- Documentation / URL
- https://ce.judge0.com/
Overview
Judge0 CE provides online code execution — key-based (the status endpoint 404s on our guess, verified).
⚠️ Status (verified 2026-08): a guessed path returned HTTP 404 (empty) — the route paths differ. Check the docs for valid routes.
What it provides
curl "https://ce.judge0.com/submissions" \
-H "X-Auth-Token: YOUR_KEY" \
-H "Content-Type: application/json" \
-d '{"source_code":"print(1)","language_id":71}'Notes
- Code execution (many languages).
- Route paths per the docs.
FAQ
Is Judge0 free? Key-based with a free tier per the docs.
Why 404? Our 2026-08 guess path was wrong (verified) — check the docs.
What does it do? Online code execution.
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