The short version
A 130 KB Linux sandbox for CI and code evaluation.
From the HackerLinks archive
Z-Jail
A 130 KB Linux sandbox for CI and code evaluation.
At a glance:
First seen:2026-07-01
Last seen:2026-07-01
Times seen:1
Website:github.com
Why it caught our attention
Commenters zeroed in on its syscall allowlist and security use cases.
Where it surfaced on Hacker News
2026-07-01
Editorial paraphrase
Replies debated how strict it is, whether security code can be readable, and whether CI runners need such tight isolation.
Original threadShow HN: Z-Jail – A 130 KB Linux sandbox-C99 with 7 defense layers and zero deps