diff --git a/src/ohmyapi/router.py b/src/ohmyapi/router.py
index ed96e12..52116e1 100644
--- a/src/ohmyapi/router.py
+++ b/src/ohmyapi/router.py
@@ -1,2 +1,29 @@
+import importlib
+import inspect
+import pkgutil
+import pathlib
+
 from fastapi import APIRouter, Depends, HTTPException
 from http import HTTPStatus
+from typing import Generator
+
+
+def package_routers(
+        package_name: str,
+        package_path: str | pathlib.Path) -> Generator[APIRouter, None, None]:
+    """
+    Discover all APIRouter instances in submodules of the given package.
+    """
+    if isinstance(package_path, str):
+        package_path = pathlib.Path(package_path).parent
+
+    for module_info in pkgutil.iter_modules([str(package_path)]):
+        if module_info.name.startswith("_"):
+            continue  # skip private modules like __init__.py
+
+        module_fqname = f"{package_name}.{module_info.name}"
+        module = importlib.import_module(module_fqname)
+
+        for _, obj in inspect.getmembers(module):
+            if isinstance(obj, APIRouter):
+                yield obj