ClientOptions

Defaults to process.env['LANGSMITH_API_KEY'].

Override the default base URL for the API, e.g., "https://api.example.com/v2/"

Defaults to process.env['LANGCHAIN_BASE_URL'].

Default headers to include with every request to the API.

These can be removed in individual requests by explicitly setting the header to null in request options.

Default query parameters to include with every request to the API.

These can be removed in individual requests by explicitly setting the param to undefined in request options.

Specify a custom fetch function implementation.

If not provided, we expect that fetch is defined globally.

Additional RequestInit options to be passed to fetch calls. Properties will be overridden by per-request fetchOptions.

Set the logger.

Defaults to globalThis.console.

Set the log level.

Defaults to process.env['LANGCHAIN_LOG'] or 'warn' if it isn't set.

The maximum number of times that the client will retry a request in case of a temporary failure, like a network error or a 5XX error from the server.

Defaults to process.env['LANGSMITH_TENANT_ID'].

The maximum amount of time (in milliseconds) that the client should wait for a response from the server before timing out a single request.

Note that request timeouts are retried by default, so in a worst-case scenario you may wait much longer than this timeout before the promise succeeds or fails.