# model_json

> **Function** in `langsmith`

📖 [View in docs](https://reference.langchain.com/python/langsmith/_openapi_client/_compat/model_json)

## Signature

```python
model_json(
    model: pydantic.BaseModel,
    *,
    indent: int | None = None,
) -> str
```

---

[View source on GitHub](https://github.com/langchain-ai/langsmith-sdk/blob/d6cd6082f09e7826a2d6afe444ae6119e61b82a6/python/langsmith/_openapi_client/_compat.py#L128)