> ## Documentation Index
> Fetch the complete documentation index at: https://openrouter-d02e98a0-mintlify-5b6e02fd.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# ObservabilityLangsmithDestinationConfig - Python SDK

> ObservabilityLangsmithDestinationConfig method reference

<Warning>
  The Python SDK and docs are currently in beta.
  Report issues on [GitHub](https://github.com/OpenRouterTeam/python-sdk/issues).
</Warning>

## Fields

| Field          | Type              | Required             | Description                                                                           |
| -------------- | ----------------- | -------------------- | ------------------------------------------------------------------------------------- |
| `api_key`      | *str*             | :heavy\_check\_mark: | N/A                                                                                   |
| `endpoint`     | *Optional\[str]*  | :heavy\_minus\_sign: | N/A                                                                                   |
| `headers`      | Dict\[str, *str*] | :heavy\_minus\_sign: | Custom HTTP headers to include in requests to this destination.                       |
| `project`      | *Optional\[str]*  | :heavy\_minus\_sign: | The name for this project, such as pr-openrouter-demo. Defaults to "main" if not set. |
| `workspace_id` | *Optional\[str]*  | :heavy\_minus\_sign: | Required for org-scoped API keys. Find this in your LangSmith workspace settings.     |