stdio-mcp-servers-zero-infra-cost-vs-docker-always-on

stdio-transport MCP servers (e.g., serena) spawn as child processes per session and die when the session ends — zero idle RAM/CPU cost. Docker-based MCP servers incur always-on resource consumption (e.g., researchclaw: 86 MB RAM, 0.48% CPU idle) regardless of use. This distinction is the primary criterion for deciding permanent registration vs. on-demand Desktop bridge.

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