# Schemathesis

7 Hacker News commenters recommended Schemathesis and 0 criticized it, November 2025 to November 2026. It was recommended in 3 of 13 months.

**Verdict:** Developers use it to generate tests from API schemas that find input validation bugs and unhandled edge cases.

## Why people recommend it

- Finds input validation bugs and edge cases (2 comments): "I found more input validation bugs in my code than I can count." ([source](https://news.ycombinator.com/item?id=45821128)) "Certainly helped me find a stack of unhandled edge cases." ([source](https://news.ycombinator.com/item?id=45821053))
- Broad coverage and unexpected app probing (2 comments): "I’ve had really good outcomes from setting up Schemathesis and getting blanket coverage" ([source](https://news.ycombinator.com/item?id=47328330)) "pretty nice tool, helped us poke into our app in ways we didn't foresee" ([source](https://news.ycombinator.com/item?id=45823744))

## Alternatives hackers recommend

- [Tusk Drift](https://hackerapproved.com/p/tusk-drift.md): 7 recommend
- [Hurl](https://hackerapproved.com/p/hurl.md): 5 recommend
- [mock API mocking utility](https://hackerapproved.com/p/mock.md): 5 recommend

## Cite as

Hacker Approved, "Schemathesis", https://hackerapproved.com/p/schemathesis/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).