# FeedbackBase

> **Class** in `langsmith`

📖 [View in docs](https://reference.langchain.com/python/langsmith/schemas/FeedbackBase)

Feedback schema.

## Signature

```python
FeedbackBase()
```

## Extends

- `BaseModel`

## Properties

- `id`
- `created_at`
- `modified_at`
- `run_id`
- `trace_id`
- `key`
- `score`
- `value`
- `comment`
- `correction`
- `feedback_source`
- `session_id`
- `start_time`
- `comparative_experiment_id`
- `feedback_group_id`
- `extra`
- `model_config`

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[View source on GitHub](https://github.com/langchain-ai/langsmith-sdk/blob/ea8caba352b122b6f36fc5eaf45756ca00470e0a/python/langsmith/schemas.py#L616)