NJSONSchema Validator

The tool validates a JSON payload against a JSON Schema and returns a structured result that can drive automation in development and QA workflows. It targets developers, API testers, data engineers, and SREs who enforce data contracts across services. By isolating data quality checks to schema rules, teams can prevent contract violations before they reach production.\n\nConceptually, validation applies the JSON Schema algorithm to each node in the input data. It checks types, required properties, array constraints, enumerations, and formats; it resolves references when enabled; and it reports the first or all failing constraints with exact data paths and schema pointers. Draft versions (for example draft-07 or 2019-09) can be selected to match project standards.\n\nCore value lies in deterministic results, actionable diagnostics, and seamless automation. Common use cases include validating API responses in tests, validating event payloads in queues, and auditing data quality during ETL. Limitations include potential performance costs for large schemas or remote reference resolution; it is a validator, not a schema generator or migrator.\n\nOutputs are structured as a boolean validity flag, an array of errors with JSON path, keyword, and schema path, and optionally a pristine data snapshot. The tool is designed for automated environments, enabling easy parsing and reporting in CI pipelines.