diff --git a/src/index.js b/src/index.js
index 84e73c3..57d39e3 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1 +1,41 @@
-// Module entry point
+import os from "node:os";
+import path from "node:path";
+import { pathToFileURL } from "node:url";
+
+export function getUserConfigDir() {
+  if (process.platform === "win32") {
+    return process.env.LOCALAPPDATA ?? path.join(os.homedir(), "AppData", "Local");
+  }
+
+  return process.env.XDG_CONFIG_HOME ?? path.join(os.homedir(), ".config");
+}
+
+export async function loadConfig(type) {
+  const configBaseDir = getUserConfigDir();
+  const configType = typeof type === "string" ? type.toLowerCase() : "";
+  let configFileName;
+
+  switch (configType) {
+    case "public":
+    case "p":
+      configFileName = "public-config.js";
+      break;
+    case "confidential":
+    case "c":
+      configFileName = "confidential-config.js";
+      break;
+    default:
+      configFileName = null;
+  }
+
+  if (!configFileName) {
+    throw new Error(
+      `Invalid config type: ${type}. Expected "public"|"p" or "confidential"|"c".`,
+    );
+  }
+
+  const configPath = path.join(configBaseDir, "sk-az-tools", configFileName);
+  const configUrl = pathToFileURL(configPath).href;
+  const { config } = await import(configUrl);
+  return config;
+}