Everyone loves a green test summary.
546 tests.
0 failures.
100% successful.
Meanwhile, the API is quietly burning in the background.This is the part nobody likes to admit.
You can have:
- perfect automation coverage
- beautiful dashboards
- CI pipelines glowing green
And still ship broken API behavior.
Because business logic can pass.
Happy paths can pass.
Regression suites can pass.
And yet:
- wrong status codes
- broken error handling
- missing headers
- inconsistent contracts
- silent structural drift
Automation is doing exactly what you told it to do. The problem is — you didn’t tell it enough.
This is why “automation before automation” matters.
Before writing 500 tests…
Before building another collection…
Before maintaining another brittle suite…
Ask one question: What actually happens if we stress this endpoint from the outside?
When you run diagnostics before writing tests, you often find things you didn’t even think to test.
That’s not anti-automation. That’s making automation meaningful.
Rentgen is built for that first layer.
Find API bugs when you have no tests.
Find blind spots before your pipeline goes green.
Find structural problems before they become production incidents.
Automation is great.
But sometimes, automation before automation shows you more than you expected.
And that’s where real API quality starts.
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