Correlation and traceability are important for diagnosing issues in multi-service or distributed environments. They allow administrators to follow the flow of related requests across components and identify where delays or failures occur.

The following table lists the correlation fields available in the MCP Server and describes their purpose:
Field Purpose
client_id Identifies the calling client when provided by the FastMCP context.
session_id Correlates a sequence of related tool invocations within the same session.
correlation_id Planned for future implementation to support cross-service tracing and provide global correlation across distributed systems.