JSON / Schema → Typed Models

Paste a JSON sample, a JSON Schema or an OpenAPI / Swagger spec (JSON or YAML) and get ready-to-use model classes in Java (Jackson POJOs or records), TypeScript (interfaces), Python (dataclasses with from_dict/to_dict, or pydantic v2), Go (structs with json tags) or C# (System.Text.Json). Nested objects, arrays, maps, enums, $ref (including recursive ones), allOf, nullable and date/UUID formats are handled; odd JSON names like first-name or 2fa are mapped to legal identifiers and still round-trip to the original JSON name.

From a sample the types are inferred: a key counts as required only if it is present in every object seen, and enums cannot be detected — use a JSON Schema for those. Names a language cannot express (for example an empty key in Java, or a key with a quote in Go) are left out with a warning. Your input is converted on the server and is not stored.