SCHEMA COMPATIBILITY FIREWALL

Data Contract Drift Blast Radius Lab

Find API, event and table schema changes that can silently break dashboards, ETL jobs, integrations, ML models and customer-facing workflows.

Reviewed 2026-07-08

Data
Breaking fieldsConsumer impactMigration testsRollback pathsJSON receipt

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Why this is different

Most schema-change reviews stop at “is the producer valid?” This lab asks the harder question: which real consumers depend on the old field name, enum, type, nullability or unit, and what test proves the migration is safe?