diff --git a/gcalendar/calendar_tools.py b/gcalendar/calendar_tools.py
index 68959346..57067331 100644
--- a/gcalendar/calendar_tools.py
+++ b/gcalendar/calendar_tools.py
@@ -18,6 +18,8 @@
 from auth.service_decorator import require_google_service
 from core.utils import handle_http_errors
 
+from mcp.types import ToolAnnotations
+
 from core.server import server
 
 
@@ -301,7 +303,12 @@ def _correct_time_format_for_api(
     return time_str
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="List Calendars",
+        readOnlyHint=True,
+    ),
+)
 @handle_http_errors("list_calendars", is_read_only=True, service_type="calendar")
 @require_google_service("calendar", "calendar_read")
 async def list_calendars(service, user_google_email: str) -> str:
diff --git a/gchat/chat_tools.py b/gchat/chat_tools.py
index 36f25433..86bc050a 100644
--- a/gchat/chat_tools.py
+++ b/gchat/chat_tools.py
@@ -12,6 +12,8 @@
 
 # Auth & server utilities
 from auth.service_decorator import require_google_service
+from mcp.types import ToolAnnotations
+
 from core.server import server
 from core.utils import handle_http_errors
 
diff --git a/gdocs/docs_tools.py b/gdocs/docs_tools.py
index 62b3853a..75f6ee48 100644
--- a/gdocs/docs_tools.py
+++ b/gdocs/docs_tools.py
@@ -11,6 +11,8 @@
 
 from googleapiclient.http import MediaIoBaseDownload, MediaIoBaseUpload
 
+from mcp.types import ToolAnnotations
+
 # Auth & server utilities
 from auth.service_decorator import require_google_service, require_multiple_services
 from core.utils import extract_office_xml_text, handle_http_errors
@@ -49,7 +51,12 @@
 logger = logging.getLogger(__name__)
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Search Docs",
+        readOnlyHint=True,
+    ),
+)
 @handle_http_errors("search_docs", is_read_only=True, service_type="docs")
 @require_google_service("drive", "drive_read")
 async def search_docs(
@@ -91,7 +98,12 @@ async def search_docs(
     return "\n".join(output)
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Get Doc Content",
+        readOnlyHint=True,
+    ),
+)
 @handle_http_errors("get_doc_content", is_read_only=True, service_type="docs")
 @require_multiple_services(
     [
@@ -276,7 +288,12 @@ def process_tab_hierarchy(tab, level=0):
     return header + body_text
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="List Docs in Folder",
+        readOnlyHint=True,
+    ),
+)
 @handle_http_errors("list_docs_in_folder", is_read_only=True, service_type="docs")
 @require_google_service("drive", "drive_read")
 async def list_docs_in_folder(
@@ -314,7 +331,12 @@ async def list_docs_in_folder(
     return "\n".join(out)
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Create Doc",
+        destructiveHint=False,
+    ),
+)
 @handle_http_errors("create_doc", service_type="docs")
 @require_google_service("docs", "docs_write")
 async def create_doc(
@@ -350,7 +372,12 @@ async def create_doc(
     return msg
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Modify Doc Text",
+        destructiveHint=True,
+    ),
+)
 @handle_http_errors("modify_doc_text", service_type="docs")
 @require_google_service("docs", "docs_write")
 async def modify_doc_text(
@@ -559,7 +586,12 @@ async def modify_doc_text(
     return f"{operation_summary} in document {document_id}.{text_info} Link: {link}"
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Find and Replace in Doc",
+        destructiveHint=True,
+    ),
+)
 @handle_http_errors("find_and_replace_doc", service_type="docs")
 @require_google_service("docs", "docs_write")
 async def find_and_replace_doc(
@@ -606,7 +638,12 @@ async def find_and_replace_doc(
     return f"Replaced {replacements} occurrence(s) of '{find_text}' with '{replace_text}' in document {document_id}. Link: {link}"
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Insert Doc Elements",
+        destructiveHint=True,
+    ),
+)
 @handle_http_errors("insert_doc_elements", service_type="docs")
 @require_google_service("docs", "docs_write")
 async def insert_doc_elements(
@@ -688,7 +725,12 @@ async def insert_doc_elements(
     return f"Inserted {description} at index {index} in document {document_id}. Link: {link}"
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Insert Doc Image",
+        destructiveHint=True,
+    ),
+)
 @handle_http_errors("insert_doc_image", service_type="docs")
 @require_multiple_services(
     [
@@ -780,7 +822,12 @@ async def insert_doc_image(
     return f"Inserted {source_description}{size_info} at index {index} in document {document_id}. Link: {link}"
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Update Doc Headers/Footers",
+        destructiveHint=True,
+    ),
+)
 @handle_http_errors("update_doc_headers_footers", service_type="docs")
 @require_google_service("docs", "docs_write")
 async def update_doc_headers_footers(
@@ -837,7 +884,12 @@ async def update_doc_headers_footers(
         return f"Error: {message}"
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Batch Update Doc",
+        destructiveHint=True,
+    ),
+)
 @handle_http_errors("batch_update_doc", service_type="docs")
 @require_google_service("docs", "docs_write")
 async def batch_update_doc(
@@ -894,7 +946,12 @@ async def batch_update_doc(
         return f"Error: {message}"
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Inspect Doc Structure",
+        readOnlyHint=True,
+    ),
+)
 @handle_http_errors("inspect_doc_structure", is_read_only=True, service_type="docs")
 @require_google_service("docs", "docs_read")
 async def inspect_doc_structure(
@@ -1022,7 +1079,12 @@ async def inspect_doc_structure(
     return f"Document structure analysis for {document_id}:\n\n{json.dumps(result, indent=2)}\n\nLink: {link}"
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Create Table with Data",
+        destructiveHint=False,
+    ),
+)
 @handle_http_errors("create_table_with_data", service_type="docs")
 @require_google_service("docs", "docs_write")
 async def create_table_with_data(
@@ -1120,7 +1182,12 @@ async def create_table_with_data(
         return f"ERROR: {message}"
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Debug Table Structure",
+        readOnlyHint=True,
+    ),
+)
 @handle_http_errors("debug_table_structure", is_read_only=True, service_type="docs")
 @require_google_service("docs", "docs_read")
 async def debug_table_structure(
@@ -1207,7 +1274,12 @@ async def debug_table_structure(
     return f"Table structure debug for table {table_index}:\n\n{json.dumps(debug_info, indent=2)}\n\nLink: {link}"
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Export Doc to PDF",
+        destructiveHint=False,
+    ),
+)
 @handle_http_errors("export_doc_to_pdf", service_type="drive")
 @require_google_service("drive", "drive_file")
 async def export_doc_to_pdf(
diff --git a/gdrive/drive_tools.py b/gdrive/drive_tools.py
index 1e7980b3..1f41bbf5 100644
--- a/gdrive/drive_tools.py
+++ b/gdrive/drive_tools.py
@@ -19,6 +19,8 @@
 from googleapiclient.errors import HttpError
 from googleapiclient.http import MediaIoBaseDownload, MediaIoBaseUpload
 
+from mcp.types import ToolAnnotations
+
 from auth.service_decorator import require_google_service
 from auth.oauth_config import is_stateless_mode
 from core.attachment_storage import get_attachment_storage, get_attachment_url
@@ -44,7 +46,12 @@
 UPLOAD_CHUNK_SIZE_BYTES = 5 * 1024 * 1024  # 5 MB (Google recommended minimum)
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Search Drive Files",
+        readOnlyHint=True,
+    ),
+)
 @handle_http_errors("search_drive_files", is_read_only=True, service_type="drive")
 @require_google_service("drive", "drive_read")
 async def search_drive_files(
@@ -118,7 +125,12 @@ async def search_drive_files(
     return text_output
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Get Drive File Content",
+        readOnlyHint=True,
+    ),
+)
 @handle_http_errors("get_drive_file_content", is_read_only=True, service_type="drive")
 @require_google_service("drive", "drive_read")
 async def get_drive_file_content(
@@ -209,7 +221,12 @@ async def get_drive_file_content(
     return header + body_text
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Get Drive File Download URL",
+        readOnlyHint=True,
+    ),
+)
 @handle_http_errors(
     "get_drive_file_download_url", is_read_only=True, service_type="drive"
 )
@@ -385,7 +402,12 @@ async def get_drive_file_download_url(
         )
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="List Drive Items",
+        readOnlyHint=True,
+    ),
+)
 @handle_http_errors("list_drive_items", is_read_only=True, service_type="drive")
 @require_google_service("drive", "drive_read")
 async def list_drive_items(
@@ -445,7 +467,12 @@ async def list_drive_items(
     return text_output
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Create Drive File",
+        destructiveHint=False,
+    ),
+)
 @handle_http_errors("create_drive_file", service_type="drive")
 @require_google_service("drive", "drive_file")
 async def create_drive_file(
@@ -680,7 +707,12 @@ async def create_drive_file(
     return confirmation_message
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Get Drive File Permissions",
+        readOnlyHint=True,
+    ),
+)
 @handle_http_errors(
     "get_drive_file_permissions", is_read_only=True, service_type="drive"
 )
@@ -789,7 +821,12 @@ async def get_drive_file_permissions(
         return f"Error getting file permissions: {e}"
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Check Drive File Public Access",
+        readOnlyHint=True,
+    ),
+)
 @handle_http_errors(
     "check_drive_file_public_access", is_read_only=True, service_type="drive"
 )
@@ -886,7 +923,12 @@ async def check_drive_file_public_access(
     return "\n".join(output_parts)
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Update Drive File",
+        destructiveHint=True,
+    ),
+)
 @handle_http_errors("update_drive_file", is_read_only=False, service_type="drive")
 @require_google_service("drive", "drive_file")
 async def update_drive_file(
@@ -1063,7 +1105,12 @@ async def _resolve_parent_arguments(parent_arg: Optional[str]) -> Optional[str]:
     return "\n".join(output_parts)
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Get Drive Shareable Link",
+        readOnlyHint=True,
+    ),
+)
 @handle_http_errors("get_drive_shareable_link", is_read_only=True, service_type="drive")
 @require_google_service("drive", "drive_read")
 async def get_drive_shareable_link(
@@ -1123,7 +1170,12 @@ async def get_drive_shareable_link(
     return "\n".join(output_parts)
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Share Drive File",
+        destructiveHint=False,
+    ),
+)
 @handle_http_errors("share_drive_file", is_read_only=False, service_type="drive")
 @require_google_service("drive", "drive_file")
 async def share_drive_file(
@@ -1219,7 +1271,12 @@ async def share_drive_file(
     return "\n".join(output_parts)
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Batch Share Drive File",
+        destructiveHint=False,
+    ),
+)
 @handle_http_errors("batch_share_drive_file", is_read_only=False, service_type="drive")
 @require_google_service("drive", "drive_file")
 async def batch_share_drive_file(
@@ -1362,7 +1419,12 @@ async def batch_share_drive_file(
     return "\n".join(output_parts)
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Update Drive Permission",
+        destructiveHint=True,
+    ),
+)
 @handle_http_errors("update_drive_permission", is_read_only=False, service_type="drive")
 @require_google_service("drive", "drive_file")
 async def update_drive_permission(
@@ -1443,7 +1505,12 @@ async def update_drive_permission(
     return "\n".join(output_parts)
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Remove Drive Permission",
+        destructiveHint=True,
+    ),
+)
 @handle_http_errors("remove_drive_permission", is_read_only=False, service_type="drive")
 @require_google_service("drive", "drive_file")
 async def remove_drive_permission(
@@ -1487,7 +1554,12 @@ async def remove_drive_permission(
     return "\n".join(output_parts)
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Transfer Drive Ownership",
+        destructiveHint=True,
+    ),
+)
 @handle_http_errors(
     "transfer_drive_ownership", is_read_only=False, service_type="drive"
 )
diff --git a/gforms/forms_tools.py b/gforms/forms_tools.py
index a2a52254..3945b0c8 100644
--- a/gforms/forms_tools.py
+++ b/gforms/forms_tools.py
@@ -10,6 +10,8 @@
 
 
 from auth.service_decorator import require_google_service
+from mcp.types import ToolAnnotations
+
 from core.server import server
 from core.utils import handle_http_errors
 
diff --git a/gmail/gmail_tools.py b/gmail/gmail_tools.py
index 5b4e2b23..568bf549 100644
--- a/gmail/gmail_tools.py
+++ b/gmail/gmail_tools.py
@@ -16,6 +16,8 @@
 from fastapi import Body
 from pydantic import Field
 
+from mcp.types import ToolAnnotations
+
 from auth.service_decorator import require_google_service
 from core.utils import handle_http_errors
 from core.server import server
@@ -381,7 +383,12 @@ def _format_gmail_results_plain(
     return "\n".join(lines)
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Search Gmail Messages",
+        readOnlyHint=True,
+    ),
+)
 @handle_http_errors("search_gmail_messages", is_read_only=True, service_type="gmail")
 @require_google_service("gmail", "gmail_read")
 async def search_gmail_messages(
@@ -445,7 +452,12 @@ async def search_gmail_messages(
     return formatted_output
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Get Gmail Message Content",
+        readOnlyHint=True,
+    ),
+)
 @handle_http_errors(
     "get_gmail_message_content", is_read_only=True, service_type="gmail"
 )
@@ -544,7 +556,12 @@ async def get_gmail_message_content(
     return "\n".join(content_lines)
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Get Gmail Messages Batch",
+        readOnlyHint=True,
+    ),
+)
 @handle_http_errors(
     "get_gmail_messages_content_batch", is_read_only=True, service_type="gmail"
 )
@@ -741,7 +758,12 @@ async def fetch_message_with_retry(mid: str, max_retries: int = 3):
     return final_output
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Get Gmail Attachment",
+        readOnlyHint=True,
+    ),
+)
 @handle_http_errors(
     "get_gmail_attachment_content", is_read_only=True, service_type="gmail"
 )
@@ -888,7 +910,12 @@ async def get_gmail_attachment_content(
         return "\n".join(result_lines)
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Send Gmail Message",
+        destructiveHint=False,
+    ),
+)
 @handle_http_errors("send_gmail_message", service_type="gmail")
 @require_google_service("gmail", GMAIL_SEND_SCOPE)
 async def send_gmail_message(
@@ -994,7 +1021,12 @@ async def send_gmail_message(
     return f"Email sent! Message ID: {message_id}"
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Draft Gmail Message",
+        destructiveHint=False,
+    ),
+)
 @handle_http_errors("draft_gmail_message", service_type="gmail")
 @require_google_service("gmail", GMAIL_COMPOSE_SCOPE)
 async def draft_gmail_message(
@@ -1189,7 +1221,12 @@ def _format_thread_content(thread_data: dict, thread_id: str) -> str:
     return "\n".join(content_lines)
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Get Gmail Thread Content",
+        readOnlyHint=True,
+    ),
+)
 @require_google_service("gmail", "gmail_read")
 @handle_http_errors("get_gmail_thread_content", is_read_only=True, service_type="gmail")
 async def get_gmail_thread_content(
@@ -1217,7 +1254,12 @@ async def get_gmail_thread_content(
     return _format_thread_content(thread_response, thread_id)
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Get Gmail Threads Batch",
+        readOnlyHint=True,
+    ),
+)
 @require_google_service("gmail", "gmail_read")
 @handle_http_errors(
     "get_gmail_threads_content_batch", is_read_only=True, service_type="gmail"
@@ -1326,7 +1368,12 @@ async def fetch_thread_with_retry(tid: str, max_retries: int = 3):
     return header + "\n\n" + "\n---\n\n".join(output_threads)
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="List Gmail Labels",
+        readOnlyHint=True,
+    ),
+)
 @handle_http_errors("list_gmail_labels", is_read_only=True, service_type="gmail")
 @require_google_service("gmail", "gmail_read")
 async def list_gmail_labels(service, user_google_email: str) -> str:
@@ -1374,7 +1421,12 @@ async def list_gmail_labels(service, user_google_email: str) -> str:
     return "\n".join(lines)
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Manage Gmail Label",
+        destructiveHint=True,
+    ),
+)
 @handle_http_errors("manage_gmail_label", service_type="gmail")
 @require_google_service("gmail", GMAIL_LABELS_SCOPE)
 async def manage_gmail_label(
@@ -1453,7 +1505,12 @@ async def manage_gmail_label(
         return f"Label '{label_name}' (ID: {label_id}) deleted successfully!"
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="List Gmail Filters",
+        readOnlyHint=True,
+    ),
+)
 @handle_http_errors("list_gmail_filters", is_read_only=True, service_type="gmail")
 @require_google_service("gmail", "gmail_settings_basic")
 async def list_gmail_filters(service, user_google_email: str) -> str:
@@ -1531,7 +1588,12 @@ async def list_gmail_filters(service, user_google_email: str) -> str:
     return "\n".join(lines).rstrip()
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Create Gmail Filter",
+        destructiveHint=False,
+    ),
+)
 @handle_http_errors("create_gmail_filter", service_type="gmail")
 @require_google_service("gmail", "gmail_settings_basic")
 async def create_gmail_filter(
@@ -1571,7 +1633,12 @@ async def create_gmail_filter(
     return f"Filter created successfully!\nFilter ID: {filter_id}"
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Delete Gmail Filter",
+        destructiveHint=True,
+    ),
+)
 @handle_http_errors("delete_gmail_filter", service_type="gmail")
 @require_google_service("gmail", "gmail_settings_basic")
 async def delete_gmail_filter(
@@ -1610,7 +1677,12 @@ async def delete_gmail_filter(
     )
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Modify Gmail Message Labels",
+        destructiveHint=True,
+    ),
+)
 @handle_http_errors("modify_gmail_message_labels", service_type="gmail")
 @require_google_service("gmail", GMAIL_MODIFY_SCOPE)
 async def modify_gmail_message_labels(
@@ -1666,7 +1738,12 @@ async def modify_gmail_message_labels(
     return f"Message labels updated successfully!\nMessage ID: {message_id}\n{'; '.join(actions)}"
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Batch Modify Gmail Labels",
+        destructiveHint=True,
+    ),
+)
 @handle_http_errors("batch_modify_gmail_message_labels", service_type="gmail")
 @require_google_service("gmail", GMAIL_MODIFY_SCOPE)
 async def batch_modify_gmail_message_labels(
diff --git a/gsearch/search_tools.py b/gsearch/search_tools.py
index 6afb0fd6..77da95cf 100644
--- a/gsearch/search_tools.py
+++ b/gsearch/search_tools.py
@@ -10,6 +10,8 @@
 from typing import Optional, List, Literal
 
 from auth.service_decorator import require_google_service
+from mcp.types import ToolAnnotations
+
 from core.server import server
 from core.utils import handle_http_errors
 
diff --git a/gsheets/sheets_tools.py b/gsheets/sheets_tools.py
index db6a9cd0..3804d4ad 100644
--- a/gsheets/sheets_tools.py
+++ b/gsheets/sheets_tools.py
@@ -11,6 +11,8 @@
 from typing import List, Optional, Union
 
 from auth.service_decorator import require_google_service
+from mcp.types import ToolAnnotations
+
 from core.server import server
 from core.utils import handle_http_errors, UserInputError
 from core.comments import create_comment_tools
@@ -957,7 +959,12 @@ async def create_spreadsheet(
     return text_output
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Create Sheet",
+        destructiveHint=False,
+    ),
+)
 @handle_http_errors("create_sheet", service_type="sheets")
 @require_google_service("sheets", "sheets_write")
 async def create_sheet(
diff --git a/gslides/slides_tools.py b/gslides/slides_tools.py
index 2c2c9be0..5c0866fb 100644
--- a/gslides/slides_tools.py
+++ b/gslides/slides_tools.py
@@ -10,6 +10,8 @@
 
 
 from auth.service_decorator import require_google_service
+from mcp.types import ToolAnnotations
+
 from core.server import server
 from core.utils import handle_http_errors
 from core.comments import create_comment_tools
@@ -17,7 +19,12 @@
 logger = logging.getLogger(__name__)
 
 
-@server.tool()
+@server.tool(
+    annotations=ToolAnnotations(
+        title="Create Presentation",
+        destructiveHint=False,
+    ),
+)
 @handle_http_errors("create_presentation", service_type="slides")
 @require_google_service("slides", "slides")
 async def create_presentation(
diff --git a/gtasks/tasks_tools.py b/gtasks/tasks_tools.py
index 70489cdf..9f18510d 100644
--- a/gtasks/tasks_tools.py
+++ b/gtasks/tasks_tools.py
@@ -13,6 +13,8 @@
 from mcp import Resource
 
 from auth.service_decorator import require_google_service
+from mcp.types import ToolAnnotations
+
 from core.server import server
 from core.utils import handle_http_errors
 
@@ -67,9 +69,14 @@ def _adjust_due_max_for_tasks_api(due_max: str) -> str:
     return adjusted.isoformat()
 
 
-@server.tool()  # type: ignore
-@require_google_service("tasks", "tasks_read")  # type: ignore
-@handle_http_errors("list_task_lists", service_type="tasks")  # type: ignore
+@server.tool(
+    annotations=ToolAnnotations(
+        title="List Task Lists",
+        readOnlyHint=True,
+    ),
+)
+@require_google_service("tasks", "tasks_read")
+@handle_http_errors("list_task_lists", service_type="tasks")
 async def list_task_lists(
     service: Resource,
     user_google_email: str,