Toggle Cursor MCP servers from a **sidebar panel**. The built-in MCP switch is per-workspace and often does not survive a restart or a new window. `"enabled": false` in `mcp.json` is ignored. Marketplace extensions cannot persist that official toggle. What does work: a server that is **not** listed in `~/.cursor/mcp.json` does not start. MCP Switch parks the full server object (including `env` / secrets) in a local disabled store instead of deleting it.