JSON to Python API

Generate Python classes (dataclasses, Pydantic v2 models or TypedDicts) with type hints from a sample JSON document. Keys become snake_case fields, with aliases where needed.

POST /api/v1/tools/json-to-pythonMCP json_to_pythonDeveloper Tools

Generate Python dataclasses, Pydantic v2 models or TypedDicts from JSON, with snake_case fields, aliases for renamed keys, Optional types and nested classes.

Input

Send these as a JSON object. Unknown fields are rejected.

input: A sample JSON document (object or array). (string, required)
rootName: Name of the top-level class; must be a valid Python identifier. (string, up to 100 characters, default "Root")
style: Output style. (string, one of dataclass, pydantic, typeddict, default "dataclass")

Try it in the browser JSON Schema Get an API key

curl https://pithlab.com/api/v1/tools/json-to-python \n  -H "Authorization: Bearer $PITHLAB_KEY" \n  -H "Content-Type: application/json" \n  -d '{"input":"{\"userId\":42,\"name\":\"Ada\",\"isActive\":true,\"tags\":[\"admin\"]}","rootName":"User","style":"pydantic"}'

Example response

{
  "ok": true,
  "result": {
    "output": "from pydantic import BaseModel, Field\n\n\nclass User(BaseModel):\n    user_id: int = Field(alias=\"userId\")\n    name: str\n    is_active: bool = Field(alias=\"isActive\")\n    tags: list[str]\n"
  }
}