JSON Schema Generator

The tool generates JSON Schema definitions from sample data and explicit inputs. It targets API developers, backend engineers, data modelers, and QA teams who require machine-verified payload contracts. It supports common data shapes including nested objects, arrays, and primitive value types. Output is a standards-compliant JSON Schema draft with properties, types, and optional constraints.
Core operation: parse JSON input, infer types, detect required fields, and construct a hierarchical schema. For arrays, if items share a consistent type, produce an items schema; when objects appear in arrays, nest a sub-schema. If strings resemble dates, apply format date-time; if numeric samples are integers, assign integer type; otherwise number.
Advanced features include selecting a target draft version, extracting enums from string values, generating definitions for nested objects with $ref, and exporting schemas in multiple serializations. It supports multiple root schemas and a definitions block for reuse.
Use cases and differentiators: API validation, data contract documentation, and cross-team data governance. The unique value comes from inference-driven schema creation from real data with minimal manual editing, producing consistent schemas across services and languages. Typical workflow: provide sample JSON, review inferred schema, tweak constraints, and export to JSON Schema draft-07.