diff --git a/ParadoxSaveParser.WebAPI/ParadoxSaveParser.WebAPI.csproj b/ParadoxSaveParser.WebAPI/ParadoxSaveParser.WebAPI.csproj
index 1700ba8..f47d841 100644
--- a/ParadoxSaveParser.WebAPI/ParadoxSaveParser.WebAPI.csproj
+++ b/ParadoxSaveParser.WebAPI/ParadoxSaveParser.WebAPI.csproj
@@ -14,5 +14,14 @@
 
     <ItemGroup>
         <PackageReference Include="DTLib.Web" Version="1.3.0"/>
+        <PackageReference Include="Google.Protobuf" Version="3.30.2" />
     </ItemGroup>
+
+    <ItemGroup>
+        <Compile Include="obj\Protobuf\*.g.cs" />
+    </ItemGroup>
+
+    <Target Name="PreBuild" BeforeTargets="PreBuildEvent">
+        <Exec Command="sh -c &quot;mkdir -p obj/Protobuf &amp;&amp; protoc Protobuf/*.proto --csharp_out=obj/Protobuf --csharp_opt=file_extension=.g.cs&quot;" />
+    </Target>
 </Project>
diff --git a/ParadoxSaveParser.WebAPI/Protobuf/ParsedData.proto b/ParadoxSaveParser.WebAPI/Protobuf/ParsedData.proto
new file mode 100644
index 0000000..2cc00a5
--- /dev/null
+++ b/ParadoxSaveParser.WebAPI/Protobuf/ParsedData.proto
@@ -0,0 +1,20 @@
+syntax = "proto3";
+option csharp_namespace = "ParadoxSaveParser.WebAPI.MyProtobuf";
+
+message Item {
+  oneof value {
+    int64 i64 = 1;
+    double f64 = 2;
+    string str = 3;
+    ItemList list = 4;
+    ItemListMap map = 5;
+  }
+}
+
+message ItemList {
+  repeated Item items = 1;
+}
+
+message ItemListMap {
+  map<string, ItemList> items_map = 1;
+}
diff --git a/README.md b/README.md
index 802165f..e28356a 100644
--- a/README.md
+++ b/README.md
@@ -14,3 +14,5 @@ Yet another save files parser.
 - **[ParadoxSaveParser.WebAPI](./ParadoxSaveParser.WebAPI)** - 
     Backend for my save file analytics website (TODO: add repo link).
 
+## Building
+1. Install protobuf compiler https://protobuf.dev/installation/