Update README.md

Author: Andcool-Systems

README.md

@@ -8,6 +8,25 @@ All endpoints and response types remain the same as in the plugin.
 
 >[!Note]
 > This server does not contain game state implementation and cannot be used for full-fledged gameplay.
+>
+## How It Works
+The plugin is installed on a Bukkit server (you can also add ViaVersion for a wider range of versions).  
+After installation, all connections will be disconnected with a message containing a 6-digit code.  
+On the server side, the plugin sets up an API on the port specified in the config, where all the requests described below should be sent.
+
+## Retrieving Data
+`GET /code/<6-digit code>`  
+After the user receives the code, you should send a request to the API endpoint, which will return data about the Minecraft account.  
+The code is valid only once and for 5 minutes (by default) after it is received. After this time, the code is deleted.
+
+**Example of a Successful Response:**
+```json
+{
+  "nickname": "AndcoolSystems",
+  "UUID": "1420c63c-b111-4453-993f-b3479ba1d4c6",
+  "status": "success"
+}
+```
 
 ## Detailed description