diff --git a/arduino-ide-extension/src/common/protocol/index.ts b/arduino-ide-extension/src/common/protocol/index.ts
index 10190575..1a9a25c2 100644
--- a/arduino-ide-extension/src/common/protocol/index.ts
+++ b/arduino-ide-extension/src/common/protocol/index.ts
@@ -13,3 +13,4 @@ export * from './examples-service';
 export * from './executable-service';
 export * from './response-service';
 export * from './notification-service';
+export * from './monitor-service';
diff --git a/arduino-ide-extension/src/common/protocol/monitor-service.ts b/arduino-ide-extension/src/common/protocol/monitor-service.ts
new file mode 100644
index 00000000..d3d5c1ed
--- /dev/null
+++ b/arduino-ide-extension/src/common/protocol/monitor-service.ts
@@ -0,0 +1,30 @@
+import { Event, JsonRpcServer } from "@theia/core";
+import { Board, Port } from './boards-service';
+
+export const MonitorManagerProxyPath = '/services/monitor-manager-proxy';
+export const MonitorManagerProxy = Symbol('MonitorManagerProxy');
+export interface MonitorManagerProxy extends JsonRpcServer<MonitorManagerProxyClient> {
+    //set the monitor settings, which includes address, port and other monitor-specific settings
+    setMonitorSettings(board: Board, port: Port, settings: MonitorSettings): Promise<void>;
+}
+
+export const MonitorManagerProxyClient = Symbol('MonitorManagerProxyClient');
+export interface MonitorManagerProxyClient {
+    onWebSocketChanged: Event<string>;
+    notifyWebSocketChanged(message: string): void;
+}
+
+export interface MonitorSetting {
+    // The setting identifier
+    readonly id: string;
+    // A human-readable label of the setting (to be displayed on the GUI)
+    readonly label: string;
+    // The setting type (at the moment only "enum" is avaiable)
+    readonly type: string;
+    // The values allowed on "enum" types
+    readonly values: string[];
+    // The selected value
+    selectedValue: string;
+}
+
+export type MonitorSettings = Record<string, MonitorSetting>;
\ No newline at end of file