mockingtesting
API Mocking vs API Interception: What's the Difference?
API mocking replaces the API with a fake. API interception edits real traffic as it passes. See the difference with diagrams, and when to use each.
12 min
Blog
How-tos, tricks and field notes
Practical guides for seeing what your apps send, and for making them misbehave on purpose.
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debuggingai
Why developers still need a network interceptor in the AI era
AI-written code breaks at the network boundary. See how a network interceptor lets you edit API responses in transit, force errors and find bugs without touching the backend.
13 min
funtesting
Turn any API into a teapot: testing error handling with HTTP 418
Make a real server answer "I'm a teapot" on demand. A silly status code that's secretly the best way to find out whether your app copes with errors it has never heard of.
5 min
how-totesting
How to simulate a 502 from any API without touching the backend
Make a payment, login or search endpoint fail on demand, so you can see how your app handles errors. Two rules, no code changes, and one detail that keeps you from double-charging a card.
4 min
how-totesting
Test timeouts, retries and slow networks on purpose
Make an endpoint hang, answer late, or fail after a delay, to check how your app behaves when the network is the problem rather than the server.
3 min
how-todebugging
Pause a request, edit it by hand, then send it
Use a Pause and Review rule to freeze matching requests before they leave your machine, change the method, URL, headers or body, and resume or drop them. A manual breakpoint for the network.
4 min