Schemathesis: Catch API bugs before your users do
Schemathesis tests OpenAPI and GraphQL APIs by generating inputs from your schema, adapting to server responses, and chaining operations into realistic workflows.
uvx schemathesis run https://example.schemathesis.io/openapi.json- 💥 500 errors that crash your API on edge case inputs
- 📋 Schema violations where your API returns different data than documented
- 🚪 Validation bypasses where invalid data gets accepted
- 🔗 Integration failures when responses don't match client expectations
- 🔄 Stateful bugs where operations work individually but fail in realistic workflows
- 🧪 Schemathesis - the CLI and pytest plugin
- 🚀 GitHub Action - run Schemathesis in CI
- 🎯 TraceCov - keyword-level coverage of your API schema
- 🔬 Live Benchmarks - hour-long runs against Apache Airflow, Open WebUI, Prefect and more
- uses: schemathesis/action@v3
with:
schema: "https://your-api.com/openapi.json"📚 Documentation | 💬 Discord
