# Onlinecompiler.io (onlinecompiler.io)

Runs submitted code in isolated sandboxes across twelve languages and returns output, exit code, CPU time and memory.

- Atlas card: https://inite.ai/en/atlas/onlinecompiler.io
- Site: https://onlinecompiler.io
- For: Developers and platforms running untrusted code for online judges, coding courses, or AI agents.
- Categories: dev
- Use 0/100 · alive 100/100

## Used for

- judge submitted programs against hidden test cases
- grade student assignments with per-test verdicts and scores
- run code samples and show output on a web page

## Price

- from 10 USD/month, free plan (read 2026-10-19 on https://onlinecompiler.io/pricing)

## For developers

- MCP server: io.onlinecompiler/compiler (namespace; auth on 2026-10-19)
- Read 2026-10-19

## Your data

- Certifications stated: none
- Read 2026-10-19

---

Source: INITE Atlas, https://inite.ai/en/atlas/onlinecompiler.io. JSON: https://inite.ai/api/atlas/onlinecompiler.io. MCP: https://inite.ai/api/mcp (atlas_lookup).