👉 Landing page: rentgen.io 👉 Download: Latest Release
Rentgen - Automation before automation. Finding API bugs when you have no tests.
Most API tools focus on how to send requests. Rentgen focuses on what your API does under pressure.
From a single known-good request, Rentgen automatically checks:
- HTTP behavior
- error handling
- security headers
- edge cases that cause real production bugs
- performance insights
This is behavior-first API testing, not scripting.
- Generate dozens of API tests from one request
- Detect misleading HTTP statuses (401 vs 403, 400 vs 413, etc.)
- Catch security and caching issues before production
- Test HTTP, WebSockets (WSS), and Protobuf APIs
- Run locally — your data never leaves your machine
Rentgen has already found real issues in production APIs, including:
- broken payload size handling (DoS risk)
- missing cache-control on private data
- incorrect authorization responses
- unsafe CORS configurations
📖 Read real API Stories → rentgen.io/api-stories
- Download the latest Release
- Open Rentgen
- Import a cURL
- Run tests
That’s it. If something fails just copy bug report and share with a team.
- QA engineers
- API developers
- security-conscious teams
- anyone tired of “it works on my machine”
Boring bugs cost the most.
Rentgen exists because the most expensive API bugs are the ones nobody thinks to test.