Config locations: Cursor~/.cursor/mcp.json · VS Code~/Library/Application Support/Code/User/mcp.json · Claude Desktop~/Library/Application Support/Claude/claude_desktop_config.json (uses different format — see the docs).
Then use it
Two verbs: vault saves, remember recalls.
At the end of your next conversation, say vault. It saves the session.
Next session, say remember. It picks up where you left off.