add list_by_type tool

src/basic_memory/api/routers/discovery_router.py

@@ -1,10 +1,12 @@
 """Router for knowledge discovery and analytics operations."""
 
+from typing import Optional
+
 from fastapi import APIRouter
 from loguru import logger
 
 from basic_memory.deps import EntityServiceDep, ObservationServiceDep
-from basic_memory.schemas import EntityTypeList, ObservationCategoryList
+from basic_memory.schemas import EntityTypeList, ObservationCategoryList, TypedEntityList, EntityResponse
 
 router = APIRouter(prefix="/discovery", tags=["discovery"])
 
@@ -23,3 +25,26 @@ async def get_observation_categories(observation_service: ObservationServiceDep)
     logger.debug("Getting all observation categories")
     categories = await observation_service.observation_categories()
     return ObservationCategoryList(categories=categories)
+
+
+@router.get("/entities/{entity_type}", response_model=TypedEntityList)
+async def list_entities_by_type(
+    entity_service: EntityServiceDep,
+    entity_type: str,
+    include_related: bool = False,
+    sort_by: Optional[str] = "updated_at",
+) -> TypedEntityList:
+    """List all entities of a specific type."""
+    logger.debug(f"Listing entities of type: {entity_type}")
+    entities = await entity_service.list_entities(
+        entity_type=entity_type,
+        sort_by=sort_by,
+        include_related=include_related
+    )
+    return TypedEntityList(
+        entity_type=entity_type,
+        entities=[EntityResponse.model_validate(e) for e in entities],
+        total=len(entities),
+        sort_by=sort_by,
+        include_related=include_related
+    )