# Rivestack

Startup, Worldwide.

> Semantic search over Hacker News, built on pgvector
>
> — in its own words, from ask.rivestack.io

- Website: https://ask.rivestack.io/
- Listed since: 2026
- launched: 2026-02-22
- launch post: https://news.ycombinator.com/item?id=47111800
- hn score: 4
- domain created: 2025-08-09
- Last verified: 2026-02-22


## Sources

- Hacker News, "Show HN" — https://news.ycombinator.com/item?id=47111800, read 2026-02-22

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startup.is · https://startup.is/registry/rivestack · open data: /api/v1, /llms.txt