Skip to content

Developer tools · API testing tool

Schemathesis

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

Summarized from 7 comments.

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

recommend
7
criticize
0
months recommended
3 of 13

Why people love it

  • Finds input validation bugs and edge cases · 2

    I found more input validation bugs in my code than I can count.

    Nov 2025 · comment

    Certainly helped me find a stack of unhandled edge cases.

    Nov 2025 · comment
  • Broad coverage and unexpected app probing · 2

    I’ve had really good outcomes from setting up Schemathesis and getting blanket coverage

    Mar 2026 · comment

    pretty nice tool, helped us poke into our app in ways we didn't foresee

    Nov 2025 · comment

What hackers pick instead

Every quote

The 5 most detailed of 7 comments. Each links to the original.

  1. I’ve had really good outcomes from setting up Schemathesis and getting blanket coverage

    Recommends · Mar 2026 · in “You hired the AI to write the tests. Of course they pass”

  2. pretty nice tool, helped us poke into our app in ways we didn't foresee

    Recommends · Nov 2025 · in “Hypothesis: Property-Based Testing for Python”

  3. I found more input validation bugs in my code than I can count.

    Recommends · Nov 2025 · in “Hypothesis: Property-Based Testing for Python”

  4. Certainly helped me find a stack of unhandled edge cases.

    Recommends · Nov 2025 · in “Hypothesis: Property-Based Testing for Python”

  5. Feel free to open an issue if something does not work as you expect

    Recommends · Dec 2025 · in “How do you test multiple API payloads and edge cases?”

Counts from 1,795,640 Hacker News comments, Nov 2025 to Nov 2026. How we count · Report a mistake