How are types inferred?

Types are inferred from your sample — strings, integers, booleans, arrays, and nested objects.

Is the schema guaranteed complete?

Review output — samples may not cover all allowed values. Add manual constraints as needed.

Generate JSON Schema (Draft 07 or 2020-12) from sample JSON with nested $defs, optional fields, and strict object mode. All client-side.

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Draft

$defs for nested types

All optional

additionalProperties: false

JSON sample

Generated JSON Schema

Auto inferDraft 07 / 2020-12$defsDownload schemaFullscreen

Object sample

{"name":"Ada","age":36}

Schema with string name, integer age