internals

What Happens During Server Startup and Shutdown in the Lifespan Handler

April 13, 2026 ahujasid/blender-mcp ↗

The lifespan handler in src/blender_mcp/server.py uses an asynchronous generator to orchestrate FastAPI initialization, telemetry startup, and graceful resource cleanup during the server's lifecycle.

The blender-mcp repository implements a Model Context Protocol (MCP) server using FastAPI, where the server_lifespan generator manages critical setup and teardown phases. This handler ensures that background services start before requests are accepted and that all resources are properly released when the process terminates.

How the Lifespan Handler Works in blender-mcp

The `server_lifespan

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