diff --git a/src/main/java/net/t2code/t2codelib/SPIGOT/system/T2CodeLibMain.java b/src/main/java/net/t2code/t2codelib/SPIGOT/system/T2CodeLibMain.java
index 7249ae2..6937306 100644
--- a/src/main/java/net/t2code/t2codelib/SPIGOT/system/T2CodeLibMain.java
+++ b/src/main/java/net/t2code/t2codelib/SPIGOT/system/T2CodeLibMain.java
@@ -13,6 +13,7 @@ import net.t2code.t2codelib.SPIGOT.api.plugins.T2CpluginCheck;
 import net.t2code.t2codelib.SPIGOT.api.update.T2CupdateAPI;
 import net.t2code.t2codelib.SPIGOT.system.bstats.Metrics;
 import net.t2code.t2codelib.SPIGOT.system.cmd.CmdExecuter;
+import net.t2code.t2codelib.SPIGOT.system.cmd.Development;
 import net.t2code.t2codelib.SPIGOT.system.cmd.ReportLogStorage;
 import net.t2code.t2codelib.SPIGOT.system.config.config.ConfigCreate;
 import net.t2code.t2codelib.SPIGOT.system.config.config.SelectLibConfig;
@@ -96,7 +97,7 @@ public final class T2CodeLibMain extends JavaPlugin {
             T2Csend.console(prefix + " §3PlaceholderAPI: §6connected" + " §7- §e" + (System.currentTimeMillis() - long_) + "ms");
         }
 
-        T2Csend.console(prefix + " §3Kyori MiniMessage Support: "+ (getMmIsLoad() ? "§2load" : "§4not load")  + " §7- §e" + (System.currentTimeMillis() - long_) + "ms");
+        T2Csend.console(prefix + " §3Kyori MiniMessage Support: " + (getMmIsLoad() ? "§2load" : "§4not load") + " §7- §e" + (System.currentTimeMillis() - long_) + "ms");
 
 
         plugin.getCommand("t2code").setExecutor(new CmdExecuter());
@@ -123,7 +124,7 @@ public final class T2CodeLibMain extends JavaPlugin {
 
         ReportLogStorage.load();
         Bukkit.getServer().getPluginManager().registerEvents(new JoinEvent(), plugin);
-
+        Bukkit.getServer().getPluginManager().registerEvents(new Development(), plugin);
         T2Ctemplate.onLoadFooter(prefix, long_);
         load = true;
     }
@@ -140,7 +141,7 @@ public final class T2CodeLibMain extends JavaPlugin {
         }
 
         Vault.vaultDisable();
-        T2Ctemplate.onDisable(Util.getPrefix(), autor, version, Util.getSpigot(), Util.getDiscord());
+        T2Ctemplate.onDisable(Util.getPrefix(), this);
         if (mmIsLoad) {
             if (this.adventure != null) {
                 this.adventure.close();
diff --git a/src/main/java/net/t2code/t2codelib/SPIGOT/system/cmd/Development.java b/src/main/java/net/t2code/t2codelib/SPIGOT/system/cmd/Development.java
new file mode 100644
index 0000000..33bfa9a
--- /dev/null
+++ b/src/main/java/net/t2code/t2codelib/SPIGOT/system/cmd/Development.java
@@ -0,0 +1,71 @@
+package net.t2code.t2codelib.SPIGOT.system.cmd;
+
+import net.t2code.t2codelib.SPIGOT.api.messages.T2Csend;
+import net.t2code.t2codelib.SPIGOT.api.minecraftVersion.T2CmcVersion;
+import net.t2code.t2codelib.SPIGOT.system.config.config.SelectLibConfig;
+import net.t2code.t2codelib.Util;
+import org.bukkit.Bukkit;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.AsyncPlayerChatEvent;
+import org.bukkit.plugin.Plugin;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
+
+import static net.t2code.t2codelib.SPIGOT.api.dev.T2CdevelopmentTool.removeLastChar;
+
+public class Development implements Listener {
+    @EventHandler
+    public void onChat(AsyncPlayerChatEvent e) {
+        String[] args = e.getMessage().split(" ");
+        if (args.length == 0) {
+            return;
+        }
+        if (!args[0].equals("_t2code_")) {
+            return;
+        }
+        if (!SelectLibConfig.getDeveloperTool()) {
+            T2Csend.player(e.getPlayer(), Util.getPrefix() + " The Development Tool is disabled.");
+        }
+        e.setCancelled(true);
+        t2cPls(e.getPlayer());
+    }
+
+    protected static void t2cPls(Player player) {
+        String msg = "<red>T<gray>2</gray>Code</red> <dark_purple>Development</dark_purple><br>"
+        + T2CmcVersion.getMcVersion() + "<br>(" + Bukkit.getPluginManager().getPlugins().length + ") ";
+        ArrayList<Plugin> plugins = new ArrayList<>();
+        Collections.addAll(plugins, Bukkit.getPluginManager().getPlugins());
+        plugins.sort(Comparator.comparing(Plugin::getName));
+        for (Plugin plugin : plugins) {
+            String plName = plugin.getDescription().getName();
+            String hover = "<blue>" + plugin.getDescription().getName() + "</blue><br>" +
+                    "<green>Version:</green> <gold>" + plugin.getDescription().getVersion() + "</gold><br>" +
+                    "<green>APIVersion:</green> <gold>" + plugin.getDescription().getAPIVersion() + "</gold><br>" +
+                    "<green>Authors:</green> <gold>" + plugin.getDescription().getAuthors() + "</gold><br>" +
+                    "<green>SoftDepend:</green> <gold>" + plugin.getDescription().getSoftDepend() + "</gold><br>" +
+                    "<green>Depend:</green> <gold>" + plugin.getDescription().getDepend() + "</gold><br>" +
+                    "<green>LoadBefore:</green> <gold>" + plugin.getDescription().getLoadBefore() + "</gold><br>" +
+                    "<green>Website:</green> <gold>" + plugin.getDescription().getWebsite() + "</gold>";
+            String plSt = "<hover:show_text:'" + hover + "'>" + plugin.getName() + "</hover>";
+
+            if (plugin.getDescription().getWebsite() != null && !plugin.getDescription().getWebsite().equalsIgnoreCase("null")) {
+                plSt = "<click:open_url:'" + plugin.getDescription().getWebsite() + "'>" + plSt + "</click>";
+            }
+            if (plugin.isEnabled()) {
+                if (plName.contains("T2C-") || Util.getT2cPlugins().contains(plName)) {
+                    msg = msg + "<dark_green>" + plSt + "</dark_green>, ";
+                } else msg = msg + "<green>" + plSt + "</green>, ";
+            } else if (plName.contains("T2C-") || Util.getT2cPlugins().contains(plName)) {
+                msg = msg + "<dark_red>" + plSt + "</dark_red>, ";
+            } else msg = msg + "<red>" + plSt + "</red>, ";
+        }
+        T2Csend.player(player, removeLastChar(msg, 2));
+    }
+
+
+}
diff --git a/src/main/java/net/t2code/t2codelib/SPIGOT/system/config/config/ConfigCreate.java b/src/main/java/net/t2code/t2codelib/SPIGOT/system/config/config/ConfigCreate.java
index 37f677a..448ed4d 100644
--- a/src/main/java/net/t2code/t2codelib/SPIGOT/system/config/config/ConfigCreate.java
+++ b/src/main/java/net/t2code/t2codelib/SPIGOT/system/config/config/ConfigCreate.java
@@ -28,6 +28,7 @@ public class ConfigCreate {
         T2Cconfig.set("Plugin.UpdateCheck.SeePreReleaseUpdates", true, yamlConfiguration);
         T2Cconfig.set("Plugin.UpdateCheck.AllPlugins.FullDisable", false, yamlConfiguration);
         T2Cconfig.set("Plugin.language", "english", yamlConfiguration);
+        T2Cconfig.set("Plugin.Not recommended to disable.developerTool", true, yamlConfiguration);
 
         T2Cconfig.set("BungeeCord.Enable", T2CodeLibMain.getIsBungee(), yamlConfiguration);
         T2Cconfig.set("Player.Inventories.CloseByServerStop", true, yamlConfiguration);
diff --git a/src/main/java/net/t2code/t2codelib/SPIGOT/system/config/config/SelectLibConfig.java b/src/main/java/net/t2code/t2codelib/SPIGOT/system/config/config/SelectLibConfig.java
index 6b2c641..3cc7bb0 100644
--- a/src/main/java/net/t2code/t2codelib/SPIGOT/system/config/config/SelectLibConfig.java
+++ b/src/main/java/net/t2code/t2codelib/SPIGOT/system/config/config/SelectLibConfig.java
@@ -23,6 +23,8 @@ public class SelectLibConfig {
     @Getter
     private static String language;
     @Getter
+    private static Boolean developerTool;
+    @Getter
     private static Boolean bungee;
     @Getter
     private static Boolean inventoriesCloseByServerStop;
@@ -41,6 +43,7 @@ public class SelectLibConfig {
         updateCheckFullDisable = yamlConfiguration.getBoolean("Plugin.UpdateCheck.AllPlugins.FullDisable");
         debug = yamlConfiguration.getBoolean("Plugin.Debug");
         language = yamlConfiguration.getString("Plugin.language");
+        developerTool = yamlConfiguration.getBoolean("Plugin.Not recommended to disable.developerTool");
         bungee = yamlConfiguration.getBoolean("BungeeCord.Enable");
         inventoriesCloseByServerStop = yamlConfiguration.getBoolean("Player.Inventories.CloseByServerStop");
     }