Schemasift: Data Drift

Schemasift is a local schema-drift review desk for data engineers, analysts, application teams, and operators working between CSV files, warehouses, streams, and scripts. Weight field changes by affected population, null behavior, and downstream blast radius. KEY FEATURES - Current-versus-proposed field states - Affected-row and consumer weighting - Type, nullability, and cardinality records - Breaking-change profile - Owner and disposition workflow - CSV schema import - Priority migration actions - Local evidence packet - Local PDF and JSON export - 110 original offline technical plates - No account, ads, analytics, tracking, IAP, or subscription Schemasift analyzes manually entered or imported schema evidence; it does not inspect live databases, prove data quality, or execute migrations. Validate source semantics, sampling, consumers, constraints, backfills, rollback, and production observability directly.