What does the tool generate?

For valid JSON it generates raw TypeScript interfaces, a matching Zod schema, and optional notes. Both code fields must be non-empty and must not contain Markdown fences.

Why is the Generate action unavailable for malformed JSON?

The UI calls JSON.parse locally and marks input valid only when parsing succeeds. Comments, trailing commas, and other non-JSON syntax therefore need to be removed first.

How are nested objects, enums, and optional fields handled?

Nested objects receive separate named interfaces and matching schemas; repeated string values can remain enum constraints. Optional or nullable properties should be inferred only when the JSON evidence supports them.

Can the generated interface validate runtime data?

No. TypeScript interfaces disappear at runtime. Use the generated Zod schema to parse data at a boundary, then review its inferred constraints against real payloads.

AI JSON Type Inferencer

Generate TypeScript interfaces and matching Zod schemas from raw JSON.

JSON input

Root name

AI JSON Type Inferencer

JSON input

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