diff --git a/src/operator_repo/checks/bundle.py b/src/operator_repo/checks/bundle.py
index f342ecc..a1c9ff0 100644
--- a/src/operator_repo/checks/bundle.py
+++ b/src/operator_repo/checks/bundle.py
@@ -7,6 +7,7 @@ from ..utils import lookup_dict
 
 
 def check_operator_name(bundle: Bundle) -> Iterator[Tuple[str, str]]:
+    """Check if the operator names used in CSV, metadata and filesystem are consistent"""
     name = bundle.annotations.get("operators.operatorframework.io.bundle.package.v1")
     if name is None:
         yield "fail", "Bundle does not define the operator name in annotations.yaml"
@@ -18,6 +19,7 @@ def check_operator_name(bundle: Bundle) -> Iterator[Tuple[str, str]]:
 
 
 def check_image(bundle: Bundle) -> Iterator[Tuple[str, str]]:
+    """Check if containerImage is properly defined and used in a deployment"""
     try:
         container_image = lookup_dict(bundle.csv, "metadata.annotations.containerImage")
         if container_image is None:
@@ -37,6 +39,7 @@ def check_image(bundle: Bundle) -> Iterator[Tuple[str, str]]:
 
 
 def check_semver(bundle: Bundle) -> Iterator[Tuple[str, str]]:
+    """Check that the bundle version is semver compliant"""
     try:
         _ = Version.parse(bundle.operator_version)
     except ValueError:
diff --git a/src/operator_repo/checks/operator.py b/src/operator_repo/checks/operator.py
index c8f488c..21a3992 100644
--- a/src/operator_repo/checks/operator.py
+++ b/src/operator_repo/checks/operator.py
@@ -4,6 +4,7 @@ from .. import Operator
 
 
 def check_upgrade(operator: Operator) -> Iterator[Tuple[str, str]]:
+    """Validate upgrade graphs for all channels"""
     all_channels = operator.channels | {operator.default_channel} - {None}
     for channel in sorted(all_channels):
         try:
diff --git a/src/operator_repo/cli.py b/src/operator_repo/cli.py
index 24bfa07..f23c269 100644
--- a/src/operator_repo/cli.py
+++ b/src/operator_repo/cli.py
@@ -97,6 +97,18 @@ def action_check(repo_path: Path, *what: str, recursive: bool = False) -> None:
             action_check_bundle(target)
 
 
+def action_check_list() -> None:
+    for check_type_name, check_type in (
+        ("Operator", operator_checks),
+        ("Bundle", bundle_checks),
+    ):
+        print(f"{check_type_name} checks:")
+        for check_name, check in getmembers(check_type, isfunction):
+            if check_name.startswith("check_"):
+                display_name = check_name.removeprefix("check_")
+                print(f" - {display_name}: {check.__doc__}")
+
+
 def main() -> None:
     main_parser = argparse.ArgumentParser(
         description="Operator repository manipulation tool",
@@ -127,6 +139,9 @@ def main() -> None:
         "check",
         help="check validity of an operator or bundle",
     )
+    check_parser.add_argument(
+        "--list", action="store_true", help="list available checks"
+    )
     check_parser.add_argument(
         "-R", "--recursive", action="store_true", help="descend the tree"
     )
@@ -151,7 +166,12 @@ def main() -> None:
     if args.action in ("list", "ls"):
         action_list(args.repo or Path.cwd(), *args.target, recursive=args.recursive)
     elif args.action == "check":
-        action_check(args.repo or Path.cwd(), *args.target, recursive=args.recursive)
+        if args.list:
+            action_check_list()
+        else:
+            action_check(
+                args.repo or Path.cwd(), *args.target, recursive=args.recursive
+            )
     else:
         main_parser.print_help()
 
diff --git a/tox.ini b/tox.ini
index 2bf3a60..f30d31c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py{38,39,310,311}, pypy39
+envlist = py{39,310,311}, pypy39
 isolated_build = True  ; This is required for a pyproject.toml based project.
 
 [testenv]