Set tool metadata in calendar (#182710)

Co-authored-by: Claude <noreply@anthropic.com>

homeassistant/components/calendar/llm.py

@@ -14,6 +14,7 @@ from homeassistant.helpers.llm import (
     LLM_API_ASSIST,
     LLMContext,
     Tool,
+    ToolAnnotations,
     ToolInput,
     ToolResult,
 )
@@ -27,11 +28,16 @@ class CalendarGetEventsTool(Tool):
     """LLM Tool allowing querying a calendar."""
 
     name = "calendar__get_events"
+    title = "Get calendar events"
     description = (
         "Get events from a calendar. "
         "When asked if something happens, search the whole week. "
         "Results are RFC 5545 which means 'end' is exclusive."
     )
+    annotations = ToolAnnotations(
+        read_only=True, destructive=False, idempotent=True, open_world=False
+    )
+    integration = DOMAIN
 
     def __init__(self, calendars: list[str]) -> None:
         """Init the get events tool."""

tests/components/calendar/test_llm.py

@@ -62,6 +62,11 @@ async def test_calendar_get_events_tool(hass: HomeAssistant) -> None:
     )
     assert tool is not None
     assert tool.parameters.schema["calendar"].container == ["Mock Calendar Name"]
+    assert tool.title == "Get calendar events"
+    assert tool.integration == calendar.DOMAIN
+    assert tool.annotations == llm.ToolAnnotations(
+        read_only=True, destructive=False, idempotent=True, open_world=False
+    )
 
     calls = async_mock_service(
         hass,