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โšก Advanced Developer Toolbox Transform, Mock, Security & API Client
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Paste JSON Payload

Paste raw JSON, drag & drop a .json file, or choose a workflow below:

โ—‹ Waiting for JSON | Lines: 0 ยท Chars: 0 ยท Size: 0 B ยท Depth: 0
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Paste JSON in the input panel and hit Beautify or Generate to see results here.

JSON to Pydantic v2 โ€” Generate Typed Python Models for FastAPI

Pydantic v2 offers fast, strict runtime data validation in Python and FastAPI. Paste your raw JSON response and get back clean Pydantic v2 models inheriting from BaseModel, with automatic EmailStr, HttpUrl, UUID, and datetime inferencing.

Nullable values are correctly wrapped in Optional[...] and snake_case properties are matched with JSON keys using Field(alias='...').