diff --git a/README.md b/README.md
index 47dec46..ec87570 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,19 @@ A standard library to interact with KaiOS 2.x and 3.x\* APIs.
 
 ## Examples
 
+### Activity
+
+```js
+// Create the service
+const service = new KaiOS.Activity({
+  name: 'toolbox/qr-to-text',
+  data: {},
+});
+
+// Send the request and await the result
+const result = await service.start();
+```
+
 ### Alarm
 
 ```js
diff --git a/src/index.ts b/src/index.ts
index 5cf8027..7326bda 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,3 +1,4 @@
+import { Activity } from './modules/activity';
 import { Alarm } from './modules/alarm';
 import { App } from './modules/app';
 import { Battery } from './modules/battery';
@@ -7,6 +8,7 @@ import { LocalStorage } from './modules/localStorage';
 import { Network } from './modules/network';
 import { Volume } from './modules/volume';
 
+export * from './modules/activity';
 export * from './modules/alarm';
 export * from './modules/app';
 export * from './modules/battery';
@@ -17,6 +19,7 @@ export * from './modules/network';
 export * from './modules/volume';
 
 export default class KaiOS {
+  static Activity = Activity;
   static Alarm = Alarm;
   static App = App;
   static Battery = Battery;
diff --git a/src/models/MozWindow.ts b/src/models/MozWindow.ts
new file mode 100644
index 0000000..2588fd8
--- /dev/null
+++ b/src/models/MozWindow.ts
@@ -0,0 +1,3 @@
+export type MozWindow = Window & {
+  MozActivity: any;
+} & any;
diff --git a/src/models/index.ts b/src/models/index.ts
index 313f0fa..a6f1bc6 100644
--- a/src/models/index.ts
+++ b/src/models/index.ts
@@ -9,5 +9,6 @@ export * from './Manifest';
 export * from './MozBattery';
 export * from './MozDeviceStorage';
 export * from './MozNavigator';
+export * from './MozWindow';
 export * from './NetworkStatus';
 export * from './Request';
diff --git a/src/modules/activity.ts b/src/modules/activity.ts
new file mode 100644
index 0000000..60cc917
--- /dev/null
+++ b/src/modules/activity.ts
@@ -0,0 +1,28 @@
+import { MozWindow } from '../models';
+
+type Data = {
+  name: string;
+  data: { [key: string]: any };
+};
+
+export class Activity<TResult = any> {
+  data: Data;
+
+  constructor(data: Data) {
+    this.data = data;
+  }
+
+  start(): Promise<TResult> {
+    return new Promise((resolve, reject) => {
+      const activity = new (window as MozWindow).MozActivity(this.data);
+
+      activity.onsuccess = function () {
+        resolve(this.result);
+      };
+
+      activity.onerror = function () {
+        reject(this.error);
+      };
+    });
+  }
+}