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// Good JSON API response structure { "data": { "id": 1, "userName": "alice", // camelCase "createdAt": "2024-06-15T10:30:00Z" // ISO 8601 }, "meta": { "total": 100, "page": 1, "perPage": 20 }, "errors": null } // Consistent error format { "errors": [ { "field": "email", "message": "Invalid email address" } ] }
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