diff --git a/api/src/main/java/net/azisaba/azipluginmessaging/api/AziPluginMessagingConfig.java b/api/src/main/java/net/azisaba/azipluginmessaging/api/AziPluginMessagingConfig.java
index 950006b..c1a0549 100644
--- a/api/src/main/java/net/azisaba/azipluginmessaging/api/AziPluginMessagingConfig.java
+++ b/api/src/main/java/net/azisaba/azipluginmessaging/api/AziPluginMessagingConfig.java
@@ -16,6 +16,7 @@
 public class AziPluginMessagingConfig {
     public static final Map<String, String> saraShowServers = new ConcurrentHashMap<>();
     public static final Map<String, String> rankableServers = new ConcurrentHashMap<>();
+    public static boolean debug = false;
 
     /**
      * Reloads all configuration from config file.
@@ -33,12 +34,16 @@ public static void reload() {
                 Files.write(
                         configPath,
                         Arrays.asList(
-                                "saraShowServers:",
+                                "saraShowServers: # this is meaningless in spigot",
                                 "  life: life",
                                 "  lifepve: life",
-                                "rankableServers:",
+                                "rankableServers: # this is meaningless in spigot",
                                 "  life: life",
-                                "  lifepve: life"
+                                "  lifepve: life",
+                                "",
+                                "# Whether to enable the debug logging.",
+                                "# If turned on, many things will be logged, including public key of a connection and packet in/out, for example.",
+                                "debug: false"
                         ),
                         StandardOpenOption.CREATE
                 );
@@ -50,6 +55,7 @@ public static void reload() {
             YamlObject obj = new YamlConfiguration(configPath.toAbsolutePath().toString()).asObject();
             readMap(rankableServers, obj, "rankableServers");
             readMap(saraShowServers, obj, "saraShowServers");
+            debug = obj.getBoolean("debug", false);
         } catch (IOException ex) {
             Logger.getCurrentLogger().warn("Failed to read config.yml", ex);
         }
diff --git a/api/src/main/java/net/azisaba/azipluginmessaging/api/protocol/Protocol.java b/api/src/main/java/net/azisaba/azipluginmessaging/api/protocol/Protocol.java
index 6ecbbfc..6d6be46 100644
--- a/api/src/main/java/net/azisaba/azipluginmessaging/api/protocol/Protocol.java
+++ b/api/src/main/java/net/azisaba/azipluginmessaging/api/protocol/Protocol.java
@@ -1,5 +1,6 @@
 package net.azisaba.azipluginmessaging.api.protocol;
 
+import net.azisaba.azipluginmessaging.api.AziPluginMessagingConfig;
 import net.azisaba.azipluginmessaging.api.AziPluginMessagingProvider;
 import net.azisaba.azipluginmessaging.api.Logger;
 import net.azisaba.azipluginmessaging.api.protocol.handler.MessageHandler;
@@ -23,7 +24,6 @@
 import net.azisaba.azipluginmessaging.api.protocol.message.ServerboundActionResponseMessage;
 import net.azisaba.azipluginmessaging.api.server.PacketSender;
 import net.azisaba.azipluginmessaging.api.server.ServerConnection;
-import net.azisaba.azipluginmessaging.api.util.Constants;
 import net.azisaba.azipluginmessaging.api.util.EncryptionUtil;
 import org.jetbrains.annotations.Contract;
 import org.jetbrains.annotations.NotNull;
@@ -130,7 +130,7 @@ public boolean sendPacket(@Nullable PacketSender sender, @NotNull M msg) {
                     throw new RuntimeException("Could not encrypt the packet (sender: " + sender + ")", e);
                 }
             }
-            if (Constants.DEBUG) {
+            if (AziPluginMessagingConfig.debug) {
                 String hex = Integer.toString(id, 16);
                 if (hex.length() == 1) hex = '0' + hex;
                 Logger.getCurrentLogger().info("Sending packet {} (0x{}) to {} (encrypted: {})", id, hex, sender, sender.isEncrypted());
@@ -171,7 +171,7 @@ public static void handleProxySide(ServerConnection server, byte[] rawData) {
                         server, id);
                 return;
             }
-            if (Constants.DEBUG) {
+            if (AziPluginMessagingConfig.debug) {
                 String hex = Integer.toString(id, 16);
                 if (hex.length() == 1) hex = '0' + hex;
                 Logger.getCurrentLogger().info("Received packet {} (0x{}) from server connection {} (encrypted: {})", id, hex, server, server.isEncrypted());
@@ -214,7 +214,7 @@ public static void handleServerSide(@NotNull PacketSender sender, byte[] rawData
                 Logger.getCurrentLogger().warn("Received unknown protocol id from {}: {}", sender, id);
                 return;
             }
-            if (Constants.DEBUG) {
+            if (AziPluginMessagingConfig.debug) {
                 String hex = Integer.toString(id, 16);
                 if (hex.length() == 1) hex = '0' + hex;
                 Logger.getCurrentLogger().info("Received packet {} (0x{}) from {}", id, hex, sender);
diff --git a/api/src/main/java/net/azisaba/azipluginmessaging/api/protocol/handler/ProxyboundEncryptionPacket.java b/api/src/main/java/net/azisaba/azipluginmessaging/api/protocol/handler/ProxyboundEncryptionPacket.java
index 181bdfa..e55df37 100644
--- a/api/src/main/java/net/azisaba/azipluginmessaging/api/protocol/handler/ProxyboundEncryptionPacket.java
+++ b/api/src/main/java/net/azisaba/azipluginmessaging/api/protocol/handler/ProxyboundEncryptionPacket.java
@@ -1,11 +1,11 @@
 package net.azisaba.azipluginmessaging.api.protocol.handler;
 
+import net.azisaba.azipluginmessaging.api.AziPluginMessagingConfig;
 import net.azisaba.azipluginmessaging.api.Logger;
 import net.azisaba.azipluginmessaging.api.protocol.Protocol;
 import net.azisaba.azipluginmessaging.api.protocol.message.EncryptionMessage;
 import net.azisaba.azipluginmessaging.api.server.PacketSender;
 import net.azisaba.azipluginmessaging.api.server.ServerConnection;
-import net.azisaba.azipluginmessaging.api.util.Constants;
 import net.azisaba.azipluginmessaging.api.util.EncryptionUtil;
 import org.jetbrains.annotations.NotNull;
 
@@ -43,7 +43,7 @@ public void handle(@NotNull PacketSender sender, @NotNull EncryptionMessage msg)
         // Enable encryption
         sender.setEncrypted(true);
 
-        if (Constants.DEBUG) {
+        if (AziPluginMessagingConfig.debug) {
             Logger.getCurrentLogger().info("Encryption enabled for " + sender);
         }
     }
diff --git a/api/src/main/java/net/azisaba/azipluginmessaging/api/protocol/handler/ServerboundEncryptionPacket.java b/api/src/main/java/net/azisaba/azipluginmessaging/api/protocol/handler/ServerboundEncryptionPacket.java
index 1c0b736..563dc35 100644
--- a/api/src/main/java/net/azisaba/azipluginmessaging/api/protocol/handler/ServerboundEncryptionPacket.java
+++ b/api/src/main/java/net/azisaba/azipluginmessaging/api/protocol/handler/ServerboundEncryptionPacket.java
@@ -1,11 +1,11 @@
 package net.azisaba.azipluginmessaging.api.protocol.handler;
 
+import net.azisaba.azipluginmessaging.api.AziPluginMessagingConfig;
 import net.azisaba.azipluginmessaging.api.AziPluginMessagingProvider;
 import net.azisaba.azipluginmessaging.api.Logger;
 import net.azisaba.azipluginmessaging.api.entity.Player;
 import net.azisaba.azipluginmessaging.api.protocol.message.EncryptionMessage;
 import net.azisaba.azipluginmessaging.api.server.PacketSender;
-import net.azisaba.azipluginmessaging.api.util.Constants;
 import org.jetbrains.annotations.NotNull;
 
 import java.io.DataInputStream;
@@ -36,7 +36,7 @@ public void handle(@NotNull PacketSender sender, @NotNull EncryptionMessage msg)
         // Enable encryption
         sender.setEncrypted(true);
 
-        if (Constants.DEBUG) {
+        if (AziPluginMessagingConfig.debug) {
             Logger.getCurrentLogger().info("Encryption enabled for " + sender);
         }
 
diff --git a/api/src/main/java/net/azisaba/azipluginmessaging/api/util/Constants.java b/api/src/main/java/net/azisaba/azipluginmessaging/api/util/Constants.java
index f494336..ebfccff 100644
--- a/api/src/main/java/net/azisaba/azipluginmessaging/api/util/Constants.java
+++ b/api/src/main/java/net/azisaba/azipluginmessaging/api/util/Constants.java
@@ -5,5 +5,4 @@
 
 public class Constants {
     public static final List<Integer> SARA_GROUPS = Arrays.asList(10000, 5000, 2000, 1000, 500, 100);
-    public static final boolean DEBUG = true;
 }
diff --git a/spigot/src/main/java/net/azisaba/azipluginmessaging/spigot/SpigotPlugin.java b/spigot/src/main/java/net/azisaba/azipluginmessaging/spigot/SpigotPlugin.java
index 055faa5..63a8726 100644
--- a/spigot/src/main/java/net/azisaba/azipluginmessaging/spigot/SpigotPlugin.java
+++ b/spigot/src/main/java/net/azisaba/azipluginmessaging/spigot/SpigotPlugin.java
@@ -1,6 +1,7 @@
 package net.azisaba.azipluginmessaging.spigot;
 
 import net.azisaba.azipluginmessaging.api.AziPluginMessaging;
+import net.azisaba.azipluginmessaging.api.AziPluginMessagingConfig;
 import net.azisaba.azipluginmessaging.api.AziPluginMessagingProvider;
 import net.azisaba.azipluginmessaging.api.AziPluginMessagingProviderProvider;
 import net.azisaba.azipluginmessaging.api.protocol.Protocol;
@@ -29,6 +30,7 @@ public void onLoad() {
         plugin = this;
         AziPluginMessaging api = new AziPluginMessagingSpigot(this);
         AziPluginMessagingProviderProvider.register(api);
+        AziPluginMessagingConfig.reload();
     }
 
     @Override
@@ -39,6 +41,9 @@ public void onEnable() {
             Bukkit.getMessenger().registerIncomingPluginChannel(this, Protocol.LEGACY_CHANNEL_ID, new PluginMessageReceiver());
         } catch (IllegalArgumentException e) {
             getLogger().info("Could not register legacy channel, you can ignore this message if you're running on 1.13+");
+            if (AziPluginMessagingConfig.debug) {
+                e.printStackTrace();
+            }
         }
         Bukkit.getMessenger().registerOutgoingPluginChannel(this, Protocol.CHANNEL_ID);
         Bukkit.getMessenger().registerIncomingPluginChannel(this, Protocol.CHANNEL_ID, new PluginMessageReceiver());