diff --git a/paperforge/commands/content_discovery.py b/paperforge/commands/content_discovery.py
index 555dec13..deb19464 100644
--- a/paperforge/commands/content_discovery.py
+++ b/paperforge/commands/content_discovery.py
@@ -2,10 +2,12 @@
 
 from __future__ import annotations
 
+import argparse
+
 from paperforge.retrieval import gateway
 
 
-def run(args) -> int:
+def run(args: argparse.Namespace) -> int:
     """Execute ``content-discovery`` via the Layer 4 gateway."""
     result = gateway.route_gateway(
         args.vault_path,
diff --git a/paperforge/commands/paper_lookup.py b/paperforge/commands/paper_lookup.py
index 35e022da..4deddb22 100644
--- a/paperforge/commands/paper_lookup.py
+++ b/paperforge/commands/paper_lookup.py
@@ -2,10 +2,12 @@
 
 from __future__ import annotations
 
+import argparse
+
 from paperforge.retrieval import gateway
 
 
-def run(args) -> int:
+def run(args: argparse.Namespace) -> int:
     """Execute ``paper-lookup`` via the Layer 4 gateway."""
     result = gateway.route_gateway(
         args.vault_path,
diff --git a/paperforge/commands/paper_navigation.py b/paperforge/commands/paper_navigation.py
index 9cc3a90f..8c6dd586 100644
--- a/paperforge/commands/paper_navigation.py
+++ b/paperforge/commands/paper_navigation.py
@@ -2,6 +2,7 @@
 
 from __future__ import annotations
 
+import argparse
 import json
 
 from paperforge import __version__ as PF_VERSION
@@ -9,7 +10,7 @@ from paperforge.core.result import PFResult
 from paperforge.retrieval import gateway
 
 
-def run(args) -> int:
+def run(args: argparse.Namespace) -> int:
     """Execute ``paper-navigation`` via the Layer 4 gateway."""
     result = gateway.route_gateway(
         args.vault_path,
diff --git a/paperforge/commands/scoped_fetch.py b/paperforge/commands/scoped_fetch.py
index add1467d..8073c254 100644
--- a/paperforge/commands/scoped_fetch.py
+++ b/paperforge/commands/scoped_fetch.py
@@ -2,13 +2,14 @@
 
 from __future__ import annotations
 
+import argparse
 import json
 from pathlib import Path
 
 from paperforge.retrieval import gateway
 
 
-def run(args) -> int:
+def run(args: argparse.Namespace) -> int:
     """Execute ``scoped-fetch`` via the Layer 4 gateway."""
     vault = Path(args.vault_path)
     result = gateway.route_gateway(