Tool overview
What is a JSON Type Generator?
A JSON type generator infers TypeScript, Go, Python, Rust, or JSON Schema types from example JSON payloads.
Why use this JSON Type Generator?
Bootstrap typed models from real API responses locally instead of writing interfaces by hand or pasting into a hosted codegen.
Key Features
Multi-language targets, automatic inference, copy-ready types, and private client-side generation.
How to Use
Follow these steps to get accurate results from the tool interface above.
- Paste representative JSON payload(s).
- Select output format: TypeScript, JSON Schema, Go, Python (Pydantic), or Rust.
- Copy generated types into SDKs, validators, or LLM tool definitions.
- Pipe from JSON Formatter after beautifying sample API responses.
Type Mapping Reference
How JSON values map to generated types.
| Field Type | Sample Payload | Structural Formatting Rule |
|---|---|---|
| object | { "id": 1 } | Becomes interface/struct with named fields. |
| array | [1, 2, 3] | Homogeneous arrays infer element type. |
| nullable | { "note": null } | Null unions appear when null seen in samples. |
Frequently Asked Questions
Expandable answers for common debugging bottlenecks and data privacy questions.
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Official Documentation & References
Authoritative specifications and platform documentation for this utility.