Code Utilities utility

JSON to Pydantic Model

Generate a basic Pydantic BaseModel from a JSON object sample.

● This tool runs entirely in your browser. Your input is never uploaded to our servers.

JSON sample

Output

Your result will appear here…

How to use JSON to Pydantic Model

Paste a representative JSON object.
Select Generate Code to create BaseModel definitions.
Adjust validators, aliases, and optional fields to match your actual API contract.

Example

Input:

{"id":1,"name":"Ada","active":true}

Output:

from pydantic import BaseModel

class Root(BaseModel):
    id: int
    name: str
    active: bool

Use cases

Start a Python API model from sample data.
Document the shape of a JSON response.
Create a model scaffold for later validation rules.

About this tool

Generate a basic Pydantic BaseModel from a JSON object sample. Processing happens locally in your browser, so your input is not sent to a server or included in analytics.

Frequently asked questions

Does this generate Pydantic validators?

No. It generates basic model classes and inferred annotations only.

Which Pydantic versions are targeted?

The output uses simple BaseModel syntax compatible with common Pydantic versions; verify details against your installed version.

Is the sample sent to a server?

No. Generation runs in your browser.