Update README.md

README.md

@@ -6,6 +6,11 @@ This lightweight system tray application allows evelopers can easily create thei
 
 Simply open run the application, and a local web server will run in the background, accessible via `http://127.0.0.1:5000/now-playing/`
 
+## Quick Start
+1. Download the latest `.exe` from the [Releases page](releases).
+2. Run the application — a tray icon will appear.
+3. Right-click the icon to view the API.
+
 ### Endpoints
 
 | Method | Endpoint | Description |
@@ -13,10 +18,46 @@ Simply open run the application, and a local web server will run in the backgrou
 | `GET` | `/now-playing` | Returns the current media state as JSON. |
 | `GET` | `/sessions` | Returns a list of all active media sessions. |
 
-## Quick Start
-1. Download the latest `.exe` from the [Releases page](releases).
-2. Run the application — a tray icon will appear.
-3. Right-click the icon to view the API.
+### Data Schema
+The `/now-playing` endpoint provides a real-time snapshot of your active media sessions. Developers can integrate this into their own web widgets using the following JSON structure:
+
+```json
+{
+  "app_version": "0.0.1",
+  "current_session_id": "string",
+  "sessions": [
+    {
+      "source_app_id": "string",
+      "media_properties": {
+        "Title": "string",
+        "Artist": "string",
+        "AlbumTitle": "string",
+        "AlbumArtist": "string",
+        "Thumbnail": "string (base64)",
+        "AlbumTrackCount": "integer",
+        "TrackNumber": "integer",
+        "Genres": "array of strings",
+        "Subtitle": "string"
+      },
+      "playback_info": {
+        "PlaybackStatus": "integer",
+        "PlaybackType": "integer",
+        "PlaybackRate": "number or null",
+        "IsShuffleActive": "boolean",
+        "AutoRepeatMode": "integer"
+      },
+      "timeline_properties": {
+        "Position": "integer (ms)",
+        "StartTime": "integer (ms)",
+        "EndTime": "integer (ms)",
+        "MinSeekTime": "integer (ms)",
+        "MaxSeekTime": "integer (ms)",
+        "LastUpdatedTime": "string (ISO 8601)"
+      }
+    }
+  ]
+}
+```
 
 ## Credits
 Built and maintained by **nutty**.