Contract testing a nutrition API with millions of messy records A schema can remain valid while every client still breaks. Changing search from a JSON array to {"results": [... ]} , converting null to zero, or renaming carbs_g is enough to break a mobile release that cannot update immediately.
Source: [Dev.to](https://dev.to/dietly/contract-testing-a-nutrition-api-with-millions-of-messy-records-6bc)