Include script description in LLM exposed entities (#118749)

* Include script description in LLM exposed entities

* Fix race in test

* Fix type

* Expose script

* Remove fields

homeassistant/helpers/llm.py

@@ -29,6 +29,7 @@ from . import (
     entity_registry as er,
     floor_registry as fr,
     intent,
+    service,
 )
 from .singleton import singleton
 
@@ -407,6 +408,7 @@ def _get_exposed_entities(
         entity_entry = entity_registry.async_get(state.entity_id)
         names = [state.name]
         area_names = []
+        description: str | None = None
 
         if entity_entry is not None:
             names.extend(entity_entry.aliases)
@@ -426,11 +428,25 @@ def _get_exposed_entities(
                     area_names.append(area.name)
                     area_names.extend(area.aliases)
 
+            if (
+                state.domain == "script"
+                and entity_entry.unique_id
+                and (
+                    service_desc := service.async_get_cached_service_description(
+                        hass, "script", entity_entry.unique_id
+                    )
+                )
+            ):
+                description = service_desc.get("description")
+
         info: dict[str, Any] = {
             "names": ", ".join(names),
             "state": state.state,
         }
 
+        if description:
+            info["description"] = description
+
         if area_names:
             info["areas"] = ", ".join(area_names)
 

homeassistant/helpers/service.py

@@ -655,6 +655,14 @@ def _load_services_files(
     return [_load_services_file(hass, integration) for integration in integrations]
 
 
+@callback
+def async_get_cached_service_description(
+    hass: HomeAssistant, domain: str, service: str
+) -> dict[str, Any] | None:
+    """Return the cached description for a service."""
+    return hass.data.get(SERVICE_DESCRIPTION_CACHE, {}).get((domain, service))
+
+
 @bind_hass
 async def async_get_all_descriptions(
     hass: HomeAssistant,

tests/helpers/test_llm.py

@@ -5,6 +5,7 @@ from unittest.mock import patch
 import pytest
 import voluptuous as vol
 
+from homeassistant.components.homeassistant.exposed_entities import async_expose_entity
 from homeassistant.components.intent import async_register_timer_handler
 from homeassistant.core import Context, HomeAssistant, State
 from homeassistant.exceptions import HomeAssistantError
@@ -293,6 +294,26 @@ async def test_assist_api_prompt(
     )
 
     # Expose entities
+
+    # Create a script with a unique ID
+    assert await async_setup_component(
+        hass,
+        "script",
+        {
+            "script": {
+                "test_script": {
+                    "description": "This is a test script",
+                    "sequence": [],
+                    "fields": {
+                        "beer": {"description": "Number of beers"},
+                        "wine": {},
+                    },
+                }
+            }
+        },
+    )
+    async_expose_entity(hass, "conversation", "script.test_script", True)
+
     entry = MockConfigEntry(title=None)
     entry.add_to_hass(hass)
     device = device_registry.async_get_or_create(
@@ -471,6 +492,11 @@ async def test_assist_api_prompt(
             "names": "Unnamed Device",
             "state": "unavailable",
         },
+        "script.test_script": {
+            "description": "This is a test script",
+            "names": "test_script",
+            "state": "off",
+        },
     }
     exposed_entities_prompt = (
         "An overview of the areas and the devices in this smart home:\n"