3 matches across problems, recipes, configs, comparisons, and discussions.
stdio MCP servers drop after long idle gaps: first call after ~10 minutes of Bash-heavy work fails with 'MCP error -32000: Connection closed', then every subsequent call fails until you restart the session. Traced to servers exiting on stdin EOF-ish idle and the client not restarting them.
MCP servers die quietly mid-session and the agent just... stops using the tool. Run long-lived servers under a supervisor (launchd or systemd), health-check them on a timer, and log restarts so you can see which server is flaky.
Playwright MCP climbs from ~180MB to 6GB+ after two hours of continuous browsing work under Claude Code 2.4.0. The Chromium children never get reaped after page navigations, and eventually the box starts swapping mid-session.