# ReplicaAuth

> **Class** in `langsmith`

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

One write destination: a server plus the credentials to reach it.

## Signature

```python
ReplicaAuth()
```

## Extends

- `NamedTuple`

## Properties

- `api_url`
- `api_key`
- `service_key`
- `tenant_id`
- `authorization`
- `cookie`

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[View source on GitHub](https://github.com/langchain-ai/langsmith-sdk/blob/19d52419f47c93ca2c57a0d51c58d255f5949092/python/langsmith/client.py#L12058)