diff --git a/README.md b/README.md
index 2652583..d86cfa6 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,15 @@
 # CS:GO Hub backend
-Use with [csgo-hub-discord](https://github.com/jesperbakhandskemager/csgo-hub-discord)
+
+## About
+This is the backend, which works with Steam's OpenID to gather their Steam ID and convert it to the corresponding CS:GO friend code.
+It functions with the [CS:GO Hub Discord bot](https://github.com/jesperbakhandskemager/csgo-hub-discord).
+
+A user can request a token from the bot by issuing the `/link-steam` command in any server where the bot is present or in the bot's DM's.
+The bot takes note of the Discord Id, and sends it along in the token request (the endpoint can only be accessed from localhost for security).
+
+The bot responds to the user with a formatted link to the `steam.csgohub.xyz` site appended by their token, and the backend gathers various informations from both the database along with data from Discord's API.
+
+Once a user is linked, anyone can issue the `/show-team` command in any channel the server owner permits and the bot will reply with a list of friend codes for any linked users in the same voice channel.
 
 ## Database
 You need the following tables in MySQL
@@ -8,7 +18,7 @@ You need the following tables in MySQL
 CREATE TABLE
   `tokens` (
     `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
-    `discord_id` varchar(18) COLLATE utf8mb4_unicode_ci NOT NULL,
+    `discord_id` varchar(21) COLLATE utf8mb4_unicode_ci NOT NULL,
     `token` varchar(8) COLLATE utf8mb4_unicode_ci NOT NULL,
     PRIMARY KEY (`id`)
   ) ENGINE = InnoDB AUTO_INCREMENT = 17 DEFAULT CHARSET = utf8mb4 COLLATE = utf8mb4_unicode_ci
@@ -16,7 +26,7 @@ CREATE TABLE
   `users` (
     `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
     `created_at` timestamp NOT NULL DEFAULT current_timestamp(),
-    `discord_id` varchar(18) COLLATE utf8mb4_unicode_ci NOT NULL,
+    `discord_id` varchar(21) COLLATE utf8mb4_unicode_ci NOT NULL,
     `friend_code` varchar(10) COLLATE utf8mb4_unicode_ci DEFAULT 'NULL',
     PRIMARY KEY (`id`)
   ) ENGINE = InnoDB AUTO_INCREMENT = 6 DEFAULT CHARSET = utf8mb4 COLLATE = utf8mb4_unicode_ci