diff --git a/docs/api/sphinx_deployment.rst b/docs/api/sphinx_deployment.rst
new file mode 100644
index 0000000..9165b0b
--- /dev/null
+++ b/docs/api/sphinx_deployment.rst
@@ -0,0 +1,26 @@
+sphinx\_deployment package
+==========================
+
+.. automodule:: sphinx_deployment
+   :members:
+   :undoc-members:
+   :show-inheritance:
+
+Submodules
+----------
+
+sphinx\_deployment.cli module
+-----------------------------
+
+.. automodule:: sphinx_deployment.cli
+   :members:
+   :undoc-members:
+   :show-inheritance:
+
+sphinx\_deployment.sphinx\_setup module
+---------------------------------------
+
+.. automodule:: sphinx_deployment.sphinx_setup
+   :members:
+   :undoc-members:
+   :show-inheritance:
diff --git a/docs/conf.py b/docs/conf.py
index 11e5732..b57ddf9 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -1,6 +1,10 @@
 from __future__ import annotations
 
 import importlib.metadata
+import sys
+from pathlib import Path
+
+sys.path.append(Path("../src").resolve())
 
 project = "sphinx-deployment"
 copyright = "2023, msclock"
@@ -16,6 +20,7 @@
     "sphinx_autodoc_typehints",
     "sphinx_copybutton",
     "sphinx_inline_tabs",
+    "sphinx_deployment",
 ]
 
 source_suffix = [".rst", ".md"]
diff --git a/src/sphinx_deployment/__init__.py b/src/sphinx_deployment/__init__.py
index 301e72a..4ff1346 100644
--- a/src/sphinx_deployment/__init__.py
+++ b/src/sphinx_deployment/__init__.py
@@ -8,6 +8,6 @@
 from __future__ import annotations
 
 from ._version import version as __version__
-from .sphinx_ext import setup
+from .sphinx_setup import setup
 
 __all__ = ["__version__", "setup"]
diff --git a/src/sphinx_deployment/sphinx_ext.py b/src/sphinx_deployment/sphinx_setup.py
similarity index 50%
rename from src/sphinx_deployment/sphinx_ext.py
rename to src/sphinx_deployment/sphinx_setup.py
index 64cb4f7..f32bddf 100644
--- a/src/sphinx_deployment/sphinx_ext.py
+++ b/src/sphinx_deployment/sphinx_setup.py
@@ -3,12 +3,20 @@
 from typing import Any
 
 from loguru import logger
-from sphinx.application import Sphinx
 
 from ._version import version
 
 
-def setup(app: Sphinx) -> dict[str, Any]:
+def setup(app: Any) -> dict[str, Any]:
+    """
+    A description of the entire function, its parameters, and its return types.
+
+    Parameters:
+        app: The app to set up.
+
+    Returns:
+        A dictionary with version, parallel_read_safe, and parallel_write_safe keys.
+    """
     logger.info(app.confdir)
     logger.info(app.config)
 
@@ -16,4 +24,4 @@ def setup(app: Sphinx) -> dict[str, Any]:
         "version": version,
         "parallel_read_safe": True,
         "parallel_write_safe": True,
-    }
+    }
\ No newline at end of file