diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..7a94e31
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+*.go
+*.rs
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..2af2e72
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "go-capnp"]
+	path = go-capnp
+	url = https://github.com/capnproto/go-capnp.git
diff --git a/README.md b/README.md
deleted file mode 100644
index 4a5a7a4..0000000
--- a/README.md
+++ /dev/null
@@ -1,2 +0,0 @@
-# hermes-backend-typings
-
diff --git a/data.capnp b/data.capnp
new file mode 100644
index 0000000..a0a1974
--- /dev/null
+++ b/data.capnp
@@ -0,0 +1,126 @@
+@0x92a7c8962141ef12;
+
+using Go = import "/go.capnp";
+$Go.package("commonbackend");
+$Go.import("git.terah.dev/imterah/hermes/backend/commonbackend");
+
+enum Protocol {
+  tcp @0;
+  udp @1;
+}
+
+enum StatusCode {
+  success @0;
+  failure @1; 
+}
+
+struct Start {
+  id        @0 :UInt8 = 0;
+  arguments @1 :Data;
+}
+
+struct Stop {
+  id @0 :UInt8 = 1;
+}
+
+struct AddProxy {
+  id         @0 :UInt8 = 2;
+  sourceIP   @1 :Data;
+  sourcePort @2 :UInt16;
+  destPort   @3 :UInt16;
+  protocol   @4 :Protocol;
+}
+
+struct RemoveProxy {
+  id         @0 :UInt8 = 3;
+  sourceIP   @1 :Data;
+  sourcePort @2 :UInt16;
+  destPort   @3 :UInt16;
+  protocol   @4 :Protocol;
+}
+
+struct ProxyStatusRequest {
+  id         @0 :UInt8 = 4;
+  sourceIP   @1 :Data;
+  sourcePort @2 :UInt16;
+  destPort   @3 :UInt16;
+  protocol   @4 :Protocol;
+}
+
+struct ProxyStatusResponse {
+  id         @0 :UInt8 = 5;
+  sourceIP   @1 :Data;
+  sourcePort @2 :UInt16;
+  destPort   @3 :UInt16;
+  protocol   @4 :Protocol;
+  isActive   @5 :Bool;
+}
+
+struct ProxyInstanceRequest {
+  id @0 :UInt8 = 6;
+}
+
+struct ProxyInstanceResponse {
+  id @0      :UInt8 = 7;
+  proxies @1 :List(ProxyInstance);
+
+  struct ProxyInstance {
+    sourceIP   @0 :Text;
+    sourcePort @1 :UInt16;
+    destPort   @2 :UInt16;
+    protocol   @3 :Protocol;
+  }
+}
+
+struct BackendStatusRequest {
+  id @0 :UInt8 = 8;
+}
+
+struct BackendStatusResponse {
+  id         @0 :UInt8 = 9;
+  isRunning  @1 :Bool;
+  statusCode @2 :StatusCode;
+  message    @3 :Text;
+}
+
+struct ProxyConnectionsRequest {
+  id @0 :UInt8 = 10;
+}
+
+struct ProxyConnectionsResponse {
+  id          @0 :UInt8 = 11;
+  connections @1 :List(Connection);
+
+  struct Connection {
+    sourceIP   @0 :Data;
+    sourcePort @1 :UInt16;
+    destPort   @2 :UInt16;
+    clientIP   @3 :Data;
+    clientPort @4 :UInt16;
+  }
+}
+
+struct CheckClientParameters {
+  id         @0 :UInt8 = 12;
+  sourceIP   @1 :Data;
+  sourcePort @2 :UInt16;
+  destPort   @3 :UInt16;
+  protocol   @4 :Protocol;
+}
+
+struct CheckServerParameters {
+  id        @0 :UInt8 = 13;
+  arguments @1 :Data;
+}
+
+struct CheckParametersResponse {
+  id           @0 :UInt8 = 14;
+  inResponseTo @1 :InResponseTo;
+  isValid      @2 :Bool;
+  message      @3 :Text;
+
+  enum InResponseTo {
+    checkClientParameters @0;
+    checkServerParameters @1;
+  }
+}
\ No newline at end of file
diff --git a/go-capnp b/go-capnp
new file mode 160000
index 0000000..f9295d9
--- /dev/null
+++ b/go-capnp
@@ -0,0 +1 @@
+Subproject commit f9295d9b67d8cf9f3f992cb70e793c09f0b2b2d5
diff --git a/scripts/go-build.sh b/scripts/go-build.sh
new file mode 100755
index 0000000..3c937e0
--- /dev/null
+++ b/scripts/go-build.sh
@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+echo $PATH
+capnp compile -I ./go-capnp/std -ogo ./*.capnp
\ No newline at end of file
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..1bd3834
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,7 @@
+{
+  pkgs ? import <nixpkgs> { },
+}: pkgs.mkShell {
+  buildInputs = with pkgs; [
+    capnproto
+  ];
+}