Schemathesis

Property-based testing for OpenAPI and GraphQL APIs

About Schemathesis

A property-based testing tool for OpenAPI and GraphQL APIs that automatically generates test cases from schemas to find crashes, validation errors and specification mismatches without hand-written tests. It offers a free entry point, with paid cloud or enterprise tiers adding hosted operation, advanced features, support or higher limits for teams that outgrow self-hosting. That model lets individuals evaluate it on real work first, then pay only when collaboration, scale, compliance or convenience requirements justify a subscription for the whole organisation.

Schemathesis key facts

Category: Developer Tools
Pricing: Freemium — a free tier lets you start, and paid plans are available if you need more.
Focus areas: testing, openapi, graphql, property based
Official site: schemathesis.io

About the Developer Tools category

Editors, platforms, and services developers rely on to build and ship software. The Developer Tools category on Tools Hub currently lists 738 tools. Alongside Schemathesis, it includes Step CI, Fortio, pytest-benchmark, Stryker.

FreemiumDeveloper Toolstestingopenapigraphqlproperty-based

More in Developer Tools

Comparing tools in the Developer Tools category? These related listings are worth a look: Step CI — Open source API testing and monitoring from YAML; Fortio — Load testing library, command line tool and web UI; pytest-benchmark — pytest fixture for benchmarking code inside test suites.