API-diff: a tool for side-by-side evaluations of JSON APIs

Nice work by @blackmad!<p>For those wanting to start in the &quot;shallow end of the pool&quot; tuning Pelias geocoder indexes and config, there&#x27;s also a web-based UI that can hit multiple instances and visualize the various results: <a href="https:&#x2F;&#x2F;pelias.github.io&#x2F;compare&#x2F;" rel="nofollow">https:&#x2F;&#x2F;pelias.github.io&#x2F;compare&#x2F;</a> Made by the good people at <a href="https:&#x2F;&#x2F;geocode.earth&#x2F;" rel="nofollow">https:&#x2F;&#x2F;geocode.earth&#x2F;</a>

If anybody is thinking about testing APIs with this tool you might be interested in a concept called &quot;Contract Testing&quot; [0] or an implementation &quot;Pact Contract Testing&quot; [1].<p>[0]: <a href="https:&#x2F;&#x2F;martinfowler.com&#x2F;bliki&#x2F;ContractTest.html" rel="nofollow">https:&#x2F;&#x2F;martinfowler.com&#x2F;bliki&#x2F;ContractTest.html</a><p>[1]: <a href="https:&#x2F;&#x2F;docs.pact.io" rel="nofollow">https:&#x2F;&#x2F;docs.pact.io</a>

It will be very cool to show diff in the API contract with every new version or release. Visually implementing - “what is changed”

This is great. I work with a number of API providers who are sometimes less than consistent with their output.

Maybe a naive question, but how is this any different than diff tools found in Git &#x2F; SVN &#x2F; etc.?