diff --git a/README.md b/README.md
index 45a9ea8..b800834 100644
--- a/README.md
+++ b/README.md
@@ -181,7 +181,7 @@ Get up and running in three simple steps:
     ```bash
     viu anilist auth
     ```
-    This will open your browser. Authorize the app and paste the obtained token back into the terminal.
+    This will open your browser. Authorize the app and paste the obtained token back into the terminal. Alternatively, you can pass the token directly as an argument, or provide a path to a text file containing the token.
 
 2.  **Launch the Interactive TUI:**
     ```bash
diff --git a/tests/cli/commands/anilist/commands/test_auth.py b/tests/cli/commands/anilist/commands/test_auth.py
new file mode 100644
index 0000000..45fcb4f
--- /dev/null
+++ b/tests/cli/commands/anilist/commands/test_auth.py
@@ -0,0 +1,284 @@
+from unittest.mock import MagicMock, patch
+
+import pytest
+from click.testing import CliRunner
+
+from viu_media.cli.commands.anilist.commands.auth import auth
+
+
+@pytest.fixture
+def runner():
+    return CliRunner()
+
+
+@pytest.fixture
+def mock_config():
+    config = MagicMock()
+    config.user.interactive = True
+    return config
+
+
+@pytest.fixture
+def mock_auth_service():
+    with patch("viu_media.cli.service.auth.AuthService") as mock:
+        yield mock
+
+
+@pytest.fixture
+def mock_feedback_service():
+    with patch("viu_media.cli.service.feedback.FeedbackService") as mock:
+        yield mock
+
+
+@pytest.fixture
+def mock_selector():
+    with patch("viu_media.libs.selectors.selector.create_selector") as mock:
+        yield mock
+
+
+@pytest.fixture
+def mock_api_client():
+    with patch("viu_media.libs.media_api.api.create_api_client") as mock:
+        yield mock
+
+
+@pytest.fixture
+def mock_webbrowser():
+    with patch("viu_media.cli.commands.anilist.commands.auth.webbrowser") as mock:
+        yield mock
+
+
+def test_auth_with_token_argument(
+    runner,
+    mock_config,
+    mock_auth_service,
+    mock_feedback_service,
+    mock_selector,
+    mock_api_client,
+):
+    """Test 'viu anilist auth <token>'."""
+    api_client_instance = mock_api_client.return_value
+    profile_mock = MagicMock()
+    profile_mock.name = "testuser"
+    api_client_instance.authenticate.return_value = profile_mock
+
+    auth_service_instance = mock_auth_service.return_value
+    auth_service_instance.get_auth.return_value = None
+
+    result = runner.invoke(auth, ["test_token"], obj=mock_config)
+
+    assert result.exit_code == 0
+    mock_api_client.assert_called_with("anilist", mock_config)
+    api_client_instance.authenticate.assert_called_with("test_token")
+    auth_service_instance.save_user_profile.assert_called_with(
+        profile_mock, "test_token"
+    )
+    feedback_instance = mock_feedback_service.return_value
+    feedback_instance.info.assert_called_with("Successfully logged in as testuser! ✨")
+
+
+def test_auth_with_token_file(
+    runner,
+    mock_config,
+    mock_auth_service,
+    mock_feedback_service,
+    mock_selector,
+    mock_api_client,
+    tmp_path,
+):
+    """Test 'viu anilist auth <path/to/token.txt>'."""
+    token_file = tmp_path / "token.txt"
+    token_file.write_text("file_token")
+
+    api_client_instance = mock_api_client.return_value
+    profile_mock = MagicMock()
+    profile_mock.name = "testuser"
+    api_client_instance.authenticate.return_value = profile_mock
+
+    auth_service_instance = mock_auth_service.return_value
+    auth_service_instance.get_auth.return_value = None
+
+    result = runner.invoke(auth, [str(token_file)], obj=mock_config)
+
+    assert result.exit_code == 0
+    mock_api_client.assert_called_with("anilist", mock_config)
+    api_client_instance.authenticate.assert_called_with("file_token")
+    auth_service_instance.save_user_profile.assert_called_with(
+        profile_mock, "file_token"
+    )
+    feedback_instance = mock_feedback_service.return_value
+    feedback_instance.info.assert_called_with("Successfully logged in as testuser! ✨")
+
+
+def test_auth_with_empty_token_file(
+    runner,
+    mock_config,
+    mock_auth_service,
+    mock_feedback_service,
+    mock_selector,
+    mock_api_client,
+    tmp_path,
+):
+    """Test 'viu anilist auth' with an empty token file."""
+    token_file = tmp_path / "token.txt"
+    token_file.write_text("")
+
+    auth_service_instance = mock_auth_service.return_value
+    auth_service_instance.get_auth.return_value = None
+
+    result = runner.invoke(auth, [str(token_file)], obj=mock_config)
+
+    assert result.exit_code == 0
+    feedback_instance = mock_feedback_service.return_value
+    feedback_instance.error.assert_called_with(f"Token file is empty: {token_file}")
+
+
+def test_auth_interactive(
+    runner,
+    mock_config,
+    mock_auth_service,
+    mock_feedback_service,
+    mock_selector,
+    mock_api_client,
+    mock_webbrowser,
+):
+    """Test 'viu anilist auth' interactive mode."""
+    mock_webbrowser.open.return_value = True
+
+    selector_instance = mock_selector.return_value
+    selector_instance.ask.return_value = "interactive_token"
+
+    api_client_instance = mock_api_client.return_value
+    profile_mock = MagicMock()
+    profile_mock.name = "testuser"
+    api_client_instance.authenticate.return_value = profile_mock
+
+    auth_service_instance = mock_auth_service.return_value
+    auth_service_instance.get_auth.return_value = None
+
+    result = runner.invoke(auth, [], obj=mock_config)
+
+    assert result.exit_code == 0
+    selector_instance.ask.assert_called_with("Enter your AniList Access Token")
+    api_client_instance.authenticate.assert_called_with("interactive_token")
+    auth_service_instance.save_user_profile.assert_called_with(
+        profile_mock, "interactive_token"
+    )
+    feedback_instance = mock_feedback_service.return_value
+    feedback_instance.info.assert_called_with("Successfully logged in as testuser! ✨")
+
+
+def test_auth_status_logged_in(
+    runner, mock_config, mock_auth_service, mock_feedback_service
+):
+    """Test 'viu anilist auth --status' when logged in."""
+    auth_service_instance = mock_auth_service.return_value
+    user_data_mock = MagicMock()
+    user_data_mock.user_profile = "testuser"
+    auth_service_instance.get_auth.return_value = user_data_mock
+
+    result = runner.invoke(auth, ["--status"], obj=mock_config)
+
+    assert result.exit_code == 0
+    feedback_instance = mock_feedback_service.return_value
+    feedback_instance.info.assert_called_with("Logged in as: testuser")
+
+
+def test_auth_status_logged_out(
+    runner, mock_config, mock_auth_service, mock_feedback_service
+):
+    """Test 'viu anilist auth --status' when logged out."""
+    auth_service_instance = mock_auth_service.return_value
+    auth_service_instance.get_auth.return_value = None
+
+    result = runner.invoke(auth, ["--status"], obj=mock_config)
+
+    assert result.exit_code == 0
+    feedback_instance = mock_feedback_service.return_value
+    feedback_instance.error.assert_called_with("Not logged in.")
+
+
+def test_auth_logout(
+    runner, mock_config, mock_auth_service, mock_feedback_service, mock_selector
+):
+    """Test 'viu anilist auth --logout'."""
+    selector_instance = mock_selector.return_value
+    selector_instance.confirm.return_value = True
+
+    result = runner.invoke(auth, ["--logout"], obj=mock_config)
+
+    assert result.exit_code == 0
+    auth_service_instance = mock_auth_service.return_value
+    auth_service_instance.clear_user_profile.assert_called_once()
+    feedback_instance = mock_feedback_service.return_value
+    feedback_instance.info.assert_called_with("You have been logged out.")
+
+
+def test_auth_logout_cancel(
+    runner, mock_config, mock_auth_service, mock_feedback_service, mock_selector
+):
+    """Test 'viu anilist auth --logout' when user cancels."""
+    selector_instance = mock_selector.return_value
+    selector_instance.confirm.return_value = False
+
+    result = runner.invoke(auth, ["--logout"], obj=mock_config)
+
+    assert result.exit_code == 0
+    auth_service_instance = mock_auth_service.return_value
+    auth_service_instance.clear_user_profile.assert_not_called()
+
+
+def test_auth_already_logged_in_relogin_yes(
+    runner,
+    mock_config,
+    mock_auth_service,
+    mock_feedback_service,
+    mock_selector,
+    mock_api_client,
+):
+    """Test 'viu anilist auth' when already logged in and user chooses to relogin."""
+    auth_service_instance = mock_auth_service.return_value
+    auth_profile_mock = MagicMock()
+    auth_profile_mock.user_profile.name = "testuser"
+    auth_service_instance.get_auth.return_value = auth_profile_mock
+
+    selector_instance = mock_selector.return_value
+    selector_instance.confirm.return_value = True
+    selector_instance.ask.return_value = "new_token"
+
+    api_client_instance = mock_api_client.return_value
+    new_profile_mock = MagicMock()
+    new_profile_mock.name = "newuser"
+    api_client_instance.authenticate.return_value = new_profile_mock
+
+    result = runner.invoke(auth, [], obj=mock_config)
+
+    assert result.exit_code == 0
+    selector_instance.confirm.assert_called_with(
+        "You are already logged in as testuser. Would you like to relogin"
+    )
+    auth_service_instance.save_user_profile.assert_called_with(
+        new_profile_mock, "new_token"
+    )
+    feedback_instance = mock_feedback_service.return_value
+    feedback_instance.info.assert_called_with("Successfully logged in as newuser! ✨")
+
+
+def test_auth_already_logged_in_relogin_no(
+    runner, mock_config, mock_auth_service, mock_feedback_service, mock_selector
+):
+    """Test 'viu anilist auth' when already logged in and user chooses not to relogin."""
+    auth_service_instance = mock_auth_service.return_value
+    auth_profile_mock = MagicMock()
+    auth_profile_mock.user_profile.name = "testuser"
+    auth_service_instance.get_auth.return_value = auth_profile_mock
+
+    selector_instance = mock_selector.return_value
+    selector_instance.confirm.return_value = False
+
+    result = runner.invoke(auth, [], obj=mock_config)
+
+    assert result.exit_code == 0
+    auth_service_instance.save_user_profile.assert_not_called()
+    feedback_instance = mock_feedback_service.return_value
+    feedback_instance.info.assert_not_called()
diff --git a/tests/libs/__init__.py b/tests/libs/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/libs/media_api/__init__.py b/tests/libs/media_api/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/libs/media_api/anilist/__init__.py b/tests/libs/media_api/anilist/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/libs/media_api/anilist/test_mapper.py b/tests/libs/media_api/anilist/test_mapper.py
new file mode 100644
index 0000000..1aaa828
--- /dev/null
+++ b/tests/libs/media_api/anilist/test_mapper.py
@@ -0,0 +1,54 @@
+from typing import Any
+
+from viu_media.libs.media_api.anilist.mapper import to_generic_user_profile
+from viu_media.libs.media_api.anilist.types import AnilistViewerData
+from viu_media.libs.media_api.types import UserProfile
+
+
+def test_to_generic_user_profile_success():
+    data: AnilistViewerData = {
+        "data": {
+            "Viewer": {
+                "id": 123,
+                "name": "testuser",
+                "avatar": {
+                    "large": "https://example.com/avatar.png",
+                    "medium": "https://example.com/avatar_medium.png",
+                    "extraLarge": "https://example.com/avatar_extraLarge.png",
+                    "small": "https://example.com/avatar_small.png",
+                },
+                "bannerImage": "https://example.com/banner.png",
+                "token": "test_token",
+            }
+        }
+    }
+    profile = to_generic_user_profile(data)
+    assert isinstance(profile, UserProfile)
+    assert profile.id == 123
+    assert profile.name == "testuser"
+    assert profile.avatar_url == "https://example.com/avatar.png"
+    assert profile.banner_url == "https://example.com/banner.png"
+
+
+def test_to_generic_user_profile_data_none():
+    data: Any = {"data": None}
+    profile = to_generic_user_profile(data)
+    assert profile is None
+
+
+def test_to_generic_user_profile_no_data_key():
+    data: Any = {"errors": [{"message": "Invalid token"}]}
+    profile = to_generic_user_profile(data)
+    assert profile is None
+
+
+def test_to_generic_user_profile_no_viewer_key():
+    data: Any = {"data": {"Page": {}}}
+    profile = to_generic_user_profile(data)
+    assert profile is None
+
+
+def test_to_generic_user_profile_viewer_none():
+    data: Any = {"data": {"Viewer": None}}
+    profile = to_generic_user_profile(data)
+    assert profile is None
diff --git a/viu_media/cli/cli.py b/viu_media/cli/cli.py
index 60bbbf8..675aabc 100644
--- a/viu_media/cli/cli.py
+++ b/viu_media/cli/cli.py
@@ -189,7 +189,7 @@ You can disable this message by turning off the welcome_screen option in the con
             ):
                 import subprocess
 
-                _cli_cmd_name="viu" if not shutil.which("viu-media") else "viu-media"
+                _cli_cmd_name = "viu" if not shutil.which("viu-media") else "viu-media"
                 cmd = [_cli_cmd_name, "config", "--update"]
                 print(f"running '{' '.join(cmd)}'...")
                 subprocess.run(cmd)
diff --git a/viu_media/cli/commands/anilist/commands/auth.py b/viu_media/cli/commands/anilist/commands/auth.py
index d6060e1..ee77aba 100644
--- a/viu_media/cli/commands/anilist/commands/auth.py
+++ b/viu_media/cli/commands/anilist/commands/auth.py
@@ -1,25 +1,72 @@
-import click
 import webbrowser
+from pathlib import Path
+import click
 
 from .....core.config.model import AppConfig
 
 
+def _get_token(feedback, selector, token_input: str | None) -> str | None:
+    """
+    Retrieves the authentication token from a file path, a direct string, or an interactive prompt.
+    """
+    if token_input:
+        path = Path(token_input)
+        if path.is_file():
+            try:
+                token = path.read_text().strip()
+                if not token:
+                    feedback.error(f"Token file is empty: {path}")
+                    return None
+                return token
+            except Exception as e:
+                feedback.error(f"Error reading token from file: {e}")
+                return None
+        return token_input
+
+    from .....core.constants import ANILIST_AUTH
+
+    open_success = webbrowser.open(ANILIST_AUTH, new=2)
+    if open_success:
+        feedback.info("Your browser has been opened to obtain an AniList token.")
+        feedback.info(
+            f"Or you can visit the site manually [magenta][link={ANILIST_AUTH}]here[/link][/magenta]."
+        )
+    else:
+        feedback.warning(
+            f"Failed to open the browser. Please visit the site manually [magenta][link={ANILIST_AUTH}]here[/link][/magenta]."
+        )
+    feedback.info(
+        "After authorizing, copy the token from the address bar and paste it below."
+    )
+    return selector.ask("Enter your AniList Access Token")
+
+
 @click.command(help="Login to your AniList account to enable progress tracking.")
 @click.option("--status", "-s", is_flag=True, help="Check current login status.")
 @click.option("--logout", "-l", is_flag=True, help="Log out and erase credentials.")
+@click.argument("token_input", required=False, type=str)
 @click.pass_obj
-def auth(config: AppConfig, status: bool, logout: bool):
-    """Handles user authentication and credential management."""
-    from .....core.constants import ANILIST_AUTH
+def auth(config: AppConfig, status: bool, logout: bool, token_input: str | None):
+    """
+    Handles user authentication and credential management.
+
+    This command allows you to log in to your AniList account to enable
+    progress tracking and other features.
+
+    You can provide your authentication token in three ways:
+    1. Interactively: Run the command without arguments to open a browser
+       and be prompted to paste the token.
+    2. As an argument: Pass the token string directly to the command.
+       $ viu anilist auth "your_token_here"
+    3. As a file: Pass the path to a text file containing the token.
+       $ viu anilist auth /path/to/token.txt
+    """
     from .....libs.media_api.api import create_api_client
-    from .....libs.selectors.selector import create_selector
     from ....service.auth import AuthService
     from ....service.feedback import FeedbackService
 
     auth_service = AuthService("anilist")
     feedback = FeedbackService(config)
-    selector = create_selector(config)
-    feedback.clear_console()
 
     if status:
         user_data = auth_service.get_auth()
@@ -29,6 +76,11 @@ def auth(config: AppConfig, status: bool, logout: bool):
             feedback.error("Not logged in.")
         return
 
+    from .....libs.selectors.selector import create_selector
+
+    selector = create_selector(config)
+    feedback.clear_console()
+
     if logout:
         if selector.confirm("Are you sure you want to log out and erase your token?"):
             auth_service.clear_user_profile()
@@ -40,27 +92,14 @@ def auth(config: AppConfig, status: bool, logout: bool):
             f"You are already logged in as {auth_profile.user_profile.name}.Would you like to relogin"
         ):
             return
-    api_client = create_api_client("anilist", config)
+    token = _get_token(feedback, selector, token_input)
 
-    open_success = webbrowser.open(ANILIST_AUTH, new=2)
-    if open_success:
-        feedback.info("Your browser has been opened to obtain an AniList token.")
-        feedback.info(
-            f"or you can visit the site manually [magenta][link={ANILIST_AUTH}]here[/link][/magenta]."
-        )
-    else:
-        feedback.warning(
-            f"Failed to open the browser. Please visit the site manually [magenta][link={ANILIST_AUTH}]here[/link][/magenta]."
-        )
-    feedback.info(
-        "After authorizing, copy the token from the address bar and paste it below."
-    )
-
-    token = selector.ask("Enter your AniList Access Token")
     if not token:
-        feedback.error("Login cancelled.")
+        if not token_input:
+            feedback.error("Login cancelled.")
         return
 
+    api_client = create_api_client("anilist", config)
     # Use the API client to validate the token and get profile info
     profile = api_client.authenticate(token.strip())
 
diff --git a/viu_media/libs/media_api/anilist/mapper.py b/viu_media/libs/media_api/anilist/mapper.py
index da731e2..d56f15d 100644
--- a/viu_media/libs/media_api/anilist/mapper.py
+++ b/viu_media/libs/media_api/anilist/mapper.py
@@ -323,7 +323,14 @@ def to_generic_user_list_result(data: AnilistMediaLists) -> Optional[MediaSearch
 def to_generic_user_profile(data: AnilistViewerData) -> Optional[UserProfile]:
     """Maps a raw AniList viewer response to a generic UserProfile."""
 
-    viewer_data: Optional[AnilistCurrentlyLoggedInUser] = data["data"]["Viewer"]
+    data_node = data.get("data")
+    if not data_node:
+        return None
+
+    viewer_data: Optional[AnilistCurrentlyLoggedInUser] = data_node.get("Viewer")
+
+    if not viewer_data:
+        return None
 
     return UserProfile(
         id=viewer_data["id"],
diff --git a/viu_media/libs/provider/anime/animepahe/constants.py b/viu_media/libs/provider/anime/animepahe/constants.py
index 1973bb1..a7a27e0 100644
--- a/viu_media/libs/provider/anime/animepahe/constants.py
+++ b/viu_media/libs/provider/anime/animepahe/constants.py
@@ -27,7 +27,7 @@ SERVER_HEADERS = {
     "Accept-Encoding": "Utf-8",
     "DNT": "1",
     "Connection": "keep-alive",
-    "Referer": ANIMEPAHE_BASE + '/',
+    "Referer": ANIMEPAHE_BASE + "/",
     "Upgrade-Insecure-Requests": "1",
     "Sec-Fetch-Dest": "iframe",
     "Sec-Fetch-Mode": "navigate",
@@ -44,7 +44,7 @@ STREAM_HEADERS = {
     "Origin": CDN_PROVIDER_BASE,
     "Sec-GPC": "1",
     "Connection": "keep-alive",
-    "Referer": CDN_PROVIDER_BASE + '/',
+    "Referer": CDN_PROVIDER_BASE + "/",
     "Sec-Fetch-Dest": "empty",
     "Sec-Fetch-Mode": "cors",
     "Sec-Fetch-Site": "cross-site",
diff --git a/viu_media/libs/provider/anime/animepahe/mappers.py b/viu_media/libs/provider/anime/animepahe/mappers.py
index ef59922..bc59dc7 100644
--- a/viu_media/libs/provider/anime/animepahe/mappers.py
+++ b/viu_media/libs/provider/anime/animepahe/mappers.py
@@ -98,4 +98,6 @@ def map_to_server(
         )
         for link in stream_links
     ]
-    return Server(name="kwik", links=links, episode_title=episode.title, headers=headers)
+    return Server(
+        name="kwik", links=links, episode_title=episode.title, headers=headers
+    )
diff --git a/viu_media/libs/provider/anime/animepahe/provider.py b/viu_media/libs/provider/anime/animepahe/provider.py
index 1e42d0a..3e0a432 100644
--- a/viu_media/libs/provider/anime/animepahe/provider.py
+++ b/viu_media/libs/provider/anime/animepahe/provider.py
@@ -184,9 +184,11 @@ class AnimePahe(BaseAnimeProvider):
             headers = {
                 "User-Agent": self.client.headers["User-Agent"],
                 "Host": stream_host or CDN_PROVIDER,
-                **STREAM_HEADERS
+                **STREAM_HEADERS,
             }
-            yield map_to_server(episode, translation_type, stream_links, headers=headers)
+            yield map_to_server(
+                episode, translation_type, stream_links, headers=headers
+            )
 
     @lru_cache()
     def _get_episode_info(