> ## Documentation Index > Fetch the complete documentation index at: https://fastmcp-docs-v3-beta2-feature-tracking.mintlify.site/llms.txt > Use this file to discover all available pages before exploring further. # telemetry # `fastmcp.server.telemetry` Server-side telemetry helpers. ## Functions ### `get_auth_span_attributes` ```python theme={null} get_auth_span_attributes() -> dict[str, str] ``` Get auth attributes for the current request, if authenticated. ### `get_session_span_attributes` ```python theme={null} get_session_span_attributes() -> dict[str, str] ``` Get session attributes for the current request. ### `server_span` ```python theme={null} server_span(name: str, method: str, server_name: str, component_type: str, component_key: str, resource_uri: str | None = None) -> Generator[Span, None, None] ``` Create a SERVER span with standard MCP attributes and auth context. Automatically records any exception on the span and sets error status. ### `delegate_span` ```python theme={null} delegate_span(name: str, provider_type: str, component_key: str) -> Generator[Span, None, None] ``` Create an INTERNAL span for provider delegation. Used by FastMCPProvider when delegating to mounted servers. Automatically records any exception on the span and sets error status.