# OpenAPPA

Project, Worldwide.

> open-source deterministic guardrails that don't break agents
>
> — in its own words, from openappa.com

- Website: https://www.openappa.com/
- Listed since: 2026
- launched: 2026-09-28
- launch post: https://news.ycombinator.com/item?id=49877515
- hn score: 22
- domain created: 2026-07-30
- Last verified: 2026-09-28


## Sources

- Hacker News, "Show HN" — https://news.ycombinator.com/item?id=49877515, read 2026-09-28

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startup.is · https://startup.is/projects/openappa · open data: /api/v1, /llms.txt