Allow enabling/disabling of MCP servers

src/core/prompts/system.ts

@@ -633,7 +633,7 @@ npm run build
 
 5. Install the MCP Server by adding the MCP server configuration to the settings file located at '${await mcpHub.getMcpSettingsFilePath()}'. The settings file may have other MCP servers already configured, so you would read it first and then add your new server to the existing \`mcpServers\` object.
 
-IMPORTANT: Regardless of what else you see in the settings file, you must not set any defaults for the \`alwaysAllow\` array in the newly added MCP server.
+IMPORTANT: Regardless of what else you see in the MCP settings file, you must default any new MCP servers you create to disabled=false and alwaysAllow=[].
 
 \`\`\`json
 {

src/core/webview/ClineProvider.ts

@@ -567,6 +567,17 @@ export class ClineProvider implements vscode.WebviewViewProvider {
 						}
 						break
 					}
+					case "toggleMcpServer": {
+						try {
+							await this.mcpHub?.toggleServerDisabled(
+								message.serverName!,
+								message.disabled!
+							)
+						} catch (error) {
+							console.error(`Failed to toggle MCP server ${message.serverName}:`, error)
+						}
+						break
+					}
 					// Add more switch case statements here as more webview message commands
 					// are created within the webview context (i.e. inside media/main.js)
 					case "playSound":