> ## Documentation Index
> Fetch the complete documentation index at: https://openrouter-d02e98a0-mintlify-7021d5f4.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# ObservabilityLangsmithDestinationConfig - Go SDK

> ObservabilityLangsmithDestinationConfig type definition

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

## Fields

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