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ISO 8601 Duration Builder Field Guide: When Four Parsing Rules Save Your API Contract

Posted by By xiezixing 2026年9月5日
Four ISO 8601 parsing rules, five worked round-trip examples, and a pre-commit audit checklist for PnYnMnDTnHnMnS.
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API Breaking Changes Detector: The Six Schema Diffs That Quietly Break Every Client
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API Breaking Changes Detector: The Six Schema Diffs That Quietly Break Every Client

Posted by By xiezixing 2026年6月25日
You published version 2.0 of your API. The CHANGELOG says "additive changes, no breaking modifications."…
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Why your API endpoint breaks the moment the JSON drifts
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Why your API endpoint breaks the moment the JSON drifts

Posted by By xiezixing 2026年6月14日
Your API accepts a JSON body. The shape looks fine in Postman. It looks fine…
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Why every modern API hides a tiny contract in its JSON — JSON Schema validator poster
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Why Every Modern API Hides a Tiny Contract in Its JSON

Posted by By xiezixing 2026年6月5日
A 2 a.m. page lights up your phone. A client integration has been failing for…
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8 Free JSON Developer Tools That Replace Expensive API Workstations

Posted by By xiezixing 2026年4月1日
8 Free JSON Developer Tools That Replace Expensive API Workstations Your team is paying $500…
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