diff --git a/src/Assets/PackManifest.cs b/src/Assets/PackManifest.cs
index 013d587..0243644 100644
--- a/src/Assets/PackManifest.cs
+++ b/src/Assets/PackManifest.cs
@@ -2,8 +2,8 @@
 
 internal static class PackManifest
 {
-    private const string Uuid = "2fef88eb-05b4-47eb-97a8-67d3d5e8f31c";
-    private const string Data = $$"""
+    internal const string Uuid = "2fef88eb-05b4-47eb-97a8-67d3d5e8f31c";
+    internal const string Data = $$"""
         {
           "format_version": 2,
           "header": {
@@ -24,7 +24,7 @@ internal static class PackManifest
               "language": "javascript",
               "uuid": "8c78f4ed-aa7f-46e8-af4f-cb460e0a3de5",
               "version": [0, 1, 0],
-              "entry": "scripts/121eiqkr.yel.js"
+              "entry": "scripts/main.js"
             }
           ],
           "dependencies": [
diff --git a/src/Assets/Prepare.cs b/src/Assets/Prepare.cs
index 8cd6a45..3869a82 100644
--- a/src/Assets/Prepare.cs
+++ b/src/Assets/Prepare.cs
@@ -1,4 +1,5 @@
-using Hosihikari.Minecraft.Extension.GlobalService;
+using System.Text.Json.Nodes;
+using Hosihikari.Minecraft.Extension.PackHelper;
 
 namespace Hosihikari.VanillaScript.Assets;
 
@@ -6,7 +7,43 @@ internal static class Prepare
 {
     internal static void Init()
     {
-        var cd = Environment.CurrentDirectory;
-        //Global.FilePathManager.OnInit(path => { });
+        var pack = Path.GetFullPath(Path.Combine("config", nameof(VanillaScript), "pack"));
+        var manifest = Path.Combine(pack, "manifest.json");
+        var scripts = Path.Combine(pack, "scripts");
+        if (!Directory.Exists(pack))
+            Directory.CreateDirectory(pack);
+        if (!Directory.Exists(scripts))
+            Directory.CreateDirectory(scripts);
+        //if (!File.Exists(manifest))
+        File.WriteAllText(manifest, PackManifest.Data);
+        File.WriteAllText(Path.Combine(scripts, "main.js"), "'EntryPoint';");
+        PackHelper.AddPack(
+            PackType.BehaviorPack,
+            pack,
+            new(Guid.Parse(PackManifest.Uuid), (0, 1, 0))
+        );
+        FixConfig();
+    }
+
+    private static void FixConfig()
+    {
+        var configFile = Path.GetFullPath(Path.Combine("config", "default", "permissions.json"));
+        if (File.Exists(configFile))
+        {
+            var json = JsonNode.Parse(File.ReadAllText(configFile));
+            if (json is not null)
+            {
+                json["permissions"] = new JsonArray
+                {
+                    "@minecraft/server-gametest",
+                    "@minecraft/server",
+                    "@minecraft/server-ui",
+                    "@minecraft/server-admin",
+                    "@minecraft/server-editor",
+                    "@minecraft/server-net"
+                };
+                File.WriteAllText(configFile, json.ToString());
+            }
+        }
     }
 }