diff --git a/src/shared/apis/window-api-consts.ts b/src/shared/apis/window-api-consts.ts
new file mode 100644
index 0000000..d26eeba
--- /dev/null
+++ b/src/shared/apis/window-api-consts.ts
@@ -0,0 +1,17 @@
+export class WindowApiConst {
+  /** Channel used by the renderer process to send data to the main process */
+  public static readonly MULTIPLES_INPUT = 'getMultiplesInput';
+
+  /** Channel used by the renderer process to receive data from the main process */
+  public static readonly MULTIPLES_OUTPUT = 'getMultiplesOutput';
+
+  /** Whitelist of the safe channels to use when sending data to the main process */
+  public static readonly SENDING_SAFE_CHANNELS = [
+    WindowApiConst.MULTIPLES_INPUT,
+  ];
+
+  /** Whitelist of the safe channels to use when receiving data from the main process */
+  public static readonly RECEIVING_SAFE_CHANNELS = [
+    WindowApiConst.MULTIPLES_OUTPUT,
+  ];
+}
diff --git a/src/shared/apis/window-api.ts b/src/shared/apis/window-api.ts
new file mode 100644
index 0000000..a32e482
--- /dev/null
+++ b/src/shared/apis/window-api.ts
@@ -0,0 +1,15 @@
+export interface WindowApi {
+  /**
+   * This method is used by the renderer process to receive data from the main process
+   * @param channel used by the renderer to receive data and by the main to send them
+   * @param func the callback function to execute when data are available
+   */
+  receive(channel: any, func: (...data: any) => void): void;
+
+  /**
+   * This method is used by the renderer process to send data to the main process
+   * @param channel used by the renderer to send data and by the main to receive them
+   * @param data the data sent by the renderer process to the main process
+   */
+  send(channel: string, ...data: any): void;
+}
diff --git a/src/shared/index.ts b/src/shared/index.ts
new file mode 100644
index 0000000..c86958d
--- /dev/null
+++ b/src/shared/index.ts
@@ -0,0 +1,2 @@
+export * from './apis/window-api';
+export * from './apis/window-api-consts';
diff --git a/src/shared/tsconfig.json b/src/shared/tsconfig.json
new file mode 100644
index 0000000..117475e
--- /dev/null
+++ b/src/shared/tsconfig.json
@@ -0,0 +1,9 @@
+{
+  "extends": "../../tsconfig.json",
+  "compilerOptions": {
+    "composite": true,
+    "declaration": true,
+    "outDir": "../../dist/node_modules/shared"
+  },
+  "include": ["./**/*.ts"]
+}