serena-stdio-transport-has-zero-idle-infra-cost

Despite being listed in the Permanent 11 MCP servers, serena uses stdio transport (not HTTP). It is spawned as a per-session process (visible as a new PID each session) and exits when the session closes — there is no persistent daemon or container. ‘Permanent’ for stdio servers means auto-registered at session start, not always-running. This makes serena cost-free between sessions, unlike HTTP-based MCP containers that consume RAM continuously.

Related

• serena-stdio-transport-has-zero-idle-cost
• serena-stdio-zero-idle-cost-spawned-per-session
• docker
• graphiti
• 2026-04-04-oracle-001-self-architecture-analysis
• stdio-mcp-servers-zero-infra-cost-vs-docker-always-on
• serena-mcp-zero-infra-cost-stdio-per-session
• serena-mcp-stdio-transport-zero-idle-infra-cost