> ## Documentation Index
> Fetch the complete documentation index at: https://wb-21fd5541-wb_mcp_and_llms_rewrite.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Call Start

> Start a new tracing call. This endpoint initiates tracking for a function call, API request, or operation within your MCP server or client application. Essential for observability and performance monitoring.