diff --git a/setup.cfg b/setup.cfg
index b153f6a4a..6760ecc27 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -14,5 +14,17 @@ use_parentheses = true
 known_first_party = supervisor,tests
 
 [flake8]
+exclude = .venv,.git,.tox,docs,venv,bin,lib,deps,build
+doctests = True
 max-line-length = 88
-ignore = E501, W503
+# E501: line too long
+# W503: Line break occurred before a binary operator
+# E203: Whitespace before ':'
+# D202 No blank lines allowed after function docstring
+# W504 line break after binary operator
+ignore =
+    E501,
+    W503,
+    E203,
+    D202,
+    W504
diff --git a/supervisor/addons/build.py b/supervisor/addons/build.py
index 0bd6823db..13ef6c410 100644
--- a/supervisor/addons/build.py
+++ b/supervisor/addons/build.py
@@ -31,7 +31,7 @@ class AddonBuild(JsonConfig, CoreSysAttributes):
 
     @property
     def base_image(self) -> str:
-        """Base images for this add-on."""
+        """Return base image for this add-on."""
         return self._data[ATTR_BUILD_FROM].get(
             self.sys_arch.default, f"homeassistant/{self.sys_arch.default}-base:latest"
         )
diff --git a/supervisor/addons/validate.py b/supervisor/addons/validate.py
index a0527984f..debb34342 100644
--- a/supervisor/addons/validate.py
+++ b/supervisor/addons/validate.py
@@ -170,7 +170,7 @@ MACHINE_ALL = [
 
 
 def _simple_startup(value):
-    """Simple startup schema."""
+    """Define startup schema."""
     if value == "before":
         return STARTUP_SERVICES
     if value == "after":
diff --git a/supervisor/bootstrap.py b/supervisor/bootstrap.py
index c4e52e55e..26421a87e 100644
--- a/supervisor/bootstrap.py
+++ b/supervisor/bootstrap.py
@@ -182,7 +182,7 @@ def migrate_system_env(coresys: CoreSys):
 
 
 def initialize_logging():
-    """Setup the logging."""
+    """Initialize the logging."""
     logging.basicConfig(level=logging.INFO)
     fmt = "%(asctime)s %(levelname)s (%(threadName)s) [%(name)s] %(message)s"
     colorfmt = f"%(log_color)s{fmt}%(reset)s"
@@ -256,7 +256,7 @@ def reg_signal(loop):
 
 
 def supervisor_debugger(coresys: CoreSys) -> None:
-    """Setup debugger if needed."""
+    """Start debugger if needed."""
     if not coresys.config.debug:
         return
     # pylint: disable=import-outside-toplevel
diff --git a/supervisor/core.py b/supervisor/core.py
index 5e0cf18f7..93f546530 100644
--- a/supervisor/core.py
+++ b/supervisor/core.py
@@ -57,7 +57,7 @@ class Core(CoreSysAttributes):
             )
 
     async def setup(self):
-        """Setup supervisor orchestration."""
+        """Start setting up supervisor orchestration."""
         self.state = CoreStates.STARTUP
 
         # Load DBus
diff --git a/supervisor/coresys.py b/supervisor/coresys.py
index bb7bbc5f8..7ebc6a300 100644
--- a/supervisor/coresys.py
+++ b/supervisor/coresys.py
@@ -550,9 +550,9 @@ class CoreSysAttributes:
         return self.coresys.hassos
 
     def sys_run_in_executor(self, funct, *args) -> asyncio.Future:
-        """Wrapper for executor pool."""
+        """Add an job to the executor pool."""
         return self.sys_loop.run_in_executor(None, funct, *args)
 
     def sys_create_task(self, coroutine) -> asyncio.Task:
-        """Wrapper for async task."""
+        """Create an async task."""
         return self.sys_loop.create_task(coroutine)
diff --git a/supervisor/dbus/utils.py b/supervisor/dbus/utils.py
index 34b61caac..bce8f4c40 100644
--- a/supervisor/dbus/utils.py
+++ b/supervisor/dbus/utils.py
@@ -4,7 +4,7 @@ from ..exceptions import DBusNotConnectedError
 
 
 def dbus_connected(method):
-    """Wrapper for check if D-Bus is connected."""
+    """Wrap check if D-Bus is connected."""
 
     def wrap_dbus(api, *args, **kwargs):
         """Check if D-Bus is connected before call a method."""
diff --git a/supervisor/docker/__init__.py b/supervisor/docker/__init__.py
index 484dc9a7e..59d21b8c9 100644
--- a/supervisor/docker/__init__.py
+++ b/supervisor/docker/__init__.py
@@ -97,7 +97,7 @@ class DockerAPI:
         ipv4: Optional[IPv4Address] = None,
         **kwargs: Dict[str, Any],
     ) -> docker.models.containers.Container:
-        """"Create a Docker container and run it.
+        """Create a Docker container and run it.
 
         Need run inside executor.
         """
diff --git a/supervisor/docker/addon.py b/supervisor/docker/addon.py
index f52b26332..aa8d4e69d 100644
--- a/supervisor/docker/addon.py
+++ b/supervisor/docker/addon.py
@@ -164,7 +164,7 @@ class DockerAddon(DockerInterface):
 
     @property
     def security_opt(self) -> List[str]:
-        """Controlling security options."""
+        """Control security options."""
         security = []
 
         # AppArmor
@@ -175,7 +175,7 @@ class DockerAddon(DockerInterface):
             security.append(f"apparmor={self.addon.slug}")
 
         # Disable Seccomp / We don't support it official and it
-        # make troubles on some kind of host systems.
+        # causes problems on some types of host systems.
         security.append("seccomp=unconfined")
 
         return security
diff --git a/supervisor/docker/interface.py b/supervisor/docker/interface.py
index d355edcef..1337b9d3a 100644
--- a/supervisor/docker/interface.py
+++ b/supervisor/docker/interface.py
@@ -227,9 +227,9 @@ class DockerInterface(CoreSysAttributes):
         return self.sys_run_in_executor(self._remove)
 
     def _remove(self) -> None:
-        """remove docker images.
+        """Remove docker images.
 
-        Need run inside executor.
+        Needs run inside executor.
         """
         # Cleanup container
         with suppress(DockerAPIError):
diff --git a/supervisor/homeassistant.py b/supervisor/homeassistant.py
index 779b7c2f9..feeffe657 100644
--- a/supervisor/homeassistant.py
+++ b/supervisor/homeassistant.py
@@ -483,7 +483,7 @@ class HomeAssistant(JsonConfig, CoreSysAttributes):
         return ConfigResult(True, log)
 
     async def ensure_access_token(self) -> None:
-        """Ensures there is an access token."""
+        """Ensure there is an access token."""
         if (
             self.access_token is not None
             and self._access_token_expires > datetime.utcnow()
diff --git a/supervisor/host/services.py b/supervisor/host/services.py
index 6dd6367f4..3885e8dcc 100644
--- a/supervisor/host/services.py
+++ b/supervisor/host/services.py
@@ -20,7 +20,7 @@ class ServiceManager(CoreSysAttributes):
         self._services = set()
 
     def __iter__(self):
-        """Iterator trought services."""
+        """Iterate through services."""
         return iter(self._services)
 
     def _check_dbus(self, unit=None):
diff --git a/supervisor/plugins/dns.py b/supervisor/plugins/dns.py
index 0922cb182..4415dbedd 100644
--- a/supervisor/plugins/dns.py
+++ b/supervisor/plugins/dns.py
@@ -414,6 +414,7 @@ class CoreDNS(JsonConfig, CoreSysAttributes):
 
     def is_fails(self) -> Awaitable[bool]:
         """Return True if a Docker container is fails state.
+
         Return a coroutine.
         """
         return self.instance.is_fails()
diff --git a/supervisor/plugins/multicast.py b/supervisor/plugins/multicast.py
index 088b97f3f..c02974679 100644
--- a/supervisor/plugins/multicast.py
+++ b/supervisor/plugins/multicast.py
@@ -192,6 +192,7 @@ class Multicast(JsonConfig, CoreSysAttributes):
 
     def is_fails(self) -> Awaitable[bool]:
         """Return True if a Docker container is fails state.
+
         Return a coroutine.
         """
         return self.instance.is_fails()
diff --git a/supervisor/snapshots/__init__.py b/supervisor/snapshots/__init__.py
index a998f809b..6746b408c 100644
--- a/supervisor/snapshots/__init__.py
+++ b/supervisor/snapshots/__init__.py
@@ -58,7 +58,7 @@ class SnapshotManager(CoreSysAttributes):
         self.snapshots_obj = {}
 
         async def _load_snapshot(tar_file):
-            """Internal function to load snapshot."""
+            """Load the snapshot."""
             snapshot = Snapshot(self.coresys, tar_file)
             if await snapshot.load():
                 self.snapshots_obj[snapshot.slug] = snapshot
diff --git a/supervisor/snapshots/snapshot.py b/supervisor/snapshots/snapshot.py
index d5cf38529..9774e8e40 100644
--- a/supervisor/snapshots/snapshot.py
+++ b/supervisor/snapshots/snapshot.py
@@ -356,7 +356,7 @@ class Snapshot(CoreSysAttributes):
         folder_list = set(folder_list or ALL_FOLDERS)
 
         def _folder_save(name):
-            """Internal function to snapshot a folder."""
+            """Take snapshot of a folder."""
             slug_name = name.replace("/", "_")
             tar_name = Path(self._tmp.name, f"{slug_name}.tar.gz")
             origin_dir = Path(self.sys_config.path_supervisor, name)
diff --git a/supervisor/store/__init__.py b/supervisor/store/__init__.py
index 3a5454dfc..7b1942c22 100644
--- a/supervisor/store/__init__.py
+++ b/supervisor/store/__init__.py
@@ -55,7 +55,7 @@ class StoreManager(CoreSysAttributes):
 
         # add new repository
         async def _add_repository(url):
-            """Helper function to async add repository."""
+            """Add a repository."""
             repository = Repository(self.coresys, url)
             if not await repository.load():
                 _LOGGER.error("Can't load from repository %s", url)
diff --git a/supervisor/utils/__init__.py b/supervisor/utils/__init__.py
index 969542142..bb4a43499 100644
--- a/supervisor/utils/__init__.py
+++ b/supervisor/utils/__init__.py
@@ -34,7 +34,8 @@ def process_lock(method):
 
 
 class AsyncThrottle:
-    """
+    """A class for throttling the execution of tasks.
+
     Decorator that prevents a function from being called more than once every
     time period with blocking.
     """
@@ -46,10 +47,10 @@ class AsyncThrottle:
         self.synchronize: Optional[asyncio.Lock] = None
 
     def __call__(self, method):
-        """Throttle function"""
+        """Throttle function."""
 
         async def wrapper(*args, **kwargs):
-            """Throttle function wrapper"""
+            """Throttle function wrapper."""
             if not self.synchronize:
                 self.synchronize = asyncio.Lock()
 
@@ -65,7 +66,8 @@ class AsyncThrottle:
 
 
 class AsyncCallFilter:
-    """
+    """A class for throttling the execution of tasks, with a filter.
+
     Decorator that prevents a function from being called more than once every
     time period.
     """
@@ -76,10 +78,10 @@ class AsyncCallFilter:
         self.time_of_last_call = datetime.min
 
     def __call__(self, method):
-        """Throttle function"""
+        """Throttle function."""
 
         async def wrapper(*args, **kwargs):
-            """Throttle function wrapper"""
+            """Throttle function wrapper."""
             now = datetime.now()
             time_since_last_call = now - self.time_of_last_call
 
diff --git a/supervisor/utils/gdbus.py b/supervisor/utils/gdbus.py
index 80615e569..6b29c3b10 100644
--- a/supervisor/utils/gdbus.py
+++ b/supervisor/utils/gdbus.py
@@ -223,7 +223,7 @@ class DBus:
                 return signal
 
     def __getattr__(self, name: str) -> DBusCallWrapper:
-        """Mapping to dbus method."""
+        """Map to dbus method."""
         return getattr(DBusCallWrapper(self, self.bus_name), name)
 
 
@@ -236,12 +236,12 @@ class DBusCallWrapper:
         self.interface: str = interface
 
     def __call__(self) -> None:
-        """Should never be called."""
+        """Catch this method from being called."""
         _LOGGER.error("DBus method %s not exists!", self.interface)
         raise DBusFatalError()
 
     def __getattr__(self, name: str):
-        """Mapping to dbus method."""
+        """Map to dbus method."""
         interface = f"{self.interface}.{name}"
 
         if interface not in self.dbus.methods:
diff --git a/supervisor/utils/tar.py b/supervisor/utils/tar.py
index 2648c0fea..7c14066b2 100644
--- a/supervisor/utils/tar.py
+++ b/supervisor/utils/tar.py
@@ -140,7 +140,7 @@ def exclude_filter(
     """Create callable filter function to check TarInfo for add."""
 
     def my_filter(tar: tarfile.TarInfo) -> Optional[tarfile.TarInfo]:
-        """Custom exclude filter."""
+        """Filter to filter excludes."""
         file_path = Path(tar.name)
         for exclude in exclude_list:
             if not file_path.match(exclude):
diff --git a/supervisor/utils/validate.py b/supervisor/utils/validate.py
index 920289c47..886ab65c0 100644
--- a/supervisor/utils/validate.py
+++ b/supervisor/utils/validate.py
@@ -8,7 +8,7 @@ def schema_or(schema):
     """Allow schema or empty."""
 
     def _wrapper(value):
-        """Wrapper for validator."""
+        """Define a wrapper for validator."""
         if not value:
             return value
         return schema(value)
diff --git a/supervisor/validate.py b/supervisor/validate.py
index 81429a548..f1d87932c 100644
--- a/supervisor/validate.py
+++ b/supervisor/validate.py
@@ -52,7 +52,7 @@ token = vol.Match(r"^[0-9a-f]{32,256}$")
 
 
 def dns_url(url: str) -> str:
-    """ takes a DNS url (str) and validates that it matches the scheme dns://<ip address>."""
+    """Take a DNS url (str) and validates that it matches the scheme dns://<ip address>."""
     if not url.lower().startswith("dns://"):
         raise vol.Invalid("Doesn't start with dns://")
     address: str = url[6:]  # strip the dns:// off
diff --git a/tests/addons/test_config.py b/tests/addons/test_config.py
index 08fefeedb..8cea64350 100644
--- a/tests/addons/test_config.py
+++ b/tests/addons/test_config.py
@@ -48,7 +48,7 @@ def test_invalid_repository():
 
 
 def test_valid_repository():
-    """Validate basic config with different valid repositories"""
+    """Validate basic config with different valid repositories."""
     config = load_json_fixture("basic-addon-config.json")
 
     custom_registry = "registry.gitlab.com/company/add-ons/core/test-example"
@@ -58,7 +58,7 @@ def test_valid_repository():
 
 
 def test_valid_map():
-    """Validate basic config with different valid maps"""
+    """Validate basic config with different valid maps."""
     config = load_json_fixture("basic-addon-config.json")
 
     config["map"] = ["backup:rw", "ssl:ro", "config"]
diff --git a/tests/test_validate.py b/tests/test_validate.py
index 223fd1ae7..e4030f873 100644
--- a/tests/test_validate.py
+++ b/tests/test_validate.py
@@ -19,29 +19,29 @@ BAD = ["hello world", "https://foo.bar", "", "dns://example.com"]
 
 
 async def test_dns_url_v4_good():
-    """ tests the DNS validator with known-good ipv6 DNS URLs """
+    """Test the DNS validator with known-good ipv6 DNS URLs."""
     for url in GOOD_V4:
         assert supervisor.validate.dns_url(url)
 
 
 async def test_dns_url_v6_good():
-    """ tests the DNS validator with known-good ipv6 DNS URLs """
+    """Test the DNS validator with known-good ipv6 DNS URLs."""
     for url in GOOD_V6:
         assert supervisor.validate.dns_url(url)
 
 
 async def test_dns_server_list_v4():
-    """ test a list with v4 addresses """
+    """Test a list with v4 addresses."""
     assert supervisor.validate.dns_server_list(GOOD_V4)
 
 
 async def test_dns_server_list_v6():
-    """ test a list with v6 addresses """
+    """Test a list with v6 addresses."""
     assert supervisor.validate.dns_server_list(GOOD_V6)
 
 
 async def test_dns_server_list_combined():
-    """ test a list with both v4 and v6 addresses """
+    """Test a list with both v4 and v6 addresses."""
     combined = GOOD_V4 + GOOD_V6
     # test the matches
     assert supervisor.validate.dns_server_list(combined)
@@ -53,14 +53,14 @@ async def test_dns_server_list_combined():
 
 
 async def test_dns_server_list_bad():
-    """ test the bad list """
+    """Test the bad list."""
     # test the matches
     with pytest.raises(voluptuous.error.Invalid):
         assert supervisor.validate.dns_server_list(BAD)
 
 
 async def test_dns_server_list_bad_combined():
-    """ test the bad list, combined with the good """
+    """Test the bad list, combined with the good."""
     combined = GOOD_V4 + GOOD_V6 + BAD
 
     with pytest.raises(voluptuous.error.Invalid):