fix(api): don't return list for runtime tools (#1686)

# What does this PR do?

Don't return list for runtime tools. Instead return Response object for
pagination and consistency with other APIs.

---------

Signed-off-by: Ihar Hrachyshka <ihar.hrachyshka@gmail.com>

llama_stack/distribution/routers/routers.py

@@ -46,11 +46,11 @@ from llama_stack.apis.scoring import (
 from llama_stack.apis.shields import Shield
 from llama_stack.apis.telemetry import MetricEvent, MetricInResponse, Telemetry
 from llama_stack.apis.tools import (
+    ListToolDefsResponse,
     RAGDocument,
     RAGQueryConfig,
     RAGQueryResult,
     RAGToolRuntime,
-    ToolDef,
     ToolRuntime,
 )
 from llama_stack.apis.vector_io import Chunk, QueryChunksResponse, VectorIO
@@ -707,6 +707,6 @@ class ToolRuntimeRouter(ToolRuntime):
 
     async def list_runtime_tools(
         self, tool_group_id: Optional[str] = None, mcp_endpoint: Optional[URL] = None
-    ) -> List[ToolDef]:
+    ) -> ListToolDefsResponse:
         logger.debug(f"ToolRuntimeRouter.list_runtime_tools: {tool_group_id}")
         return await self.routing_table.get_provider_impl(tool_group_id).list_tools(tool_group_id, mcp_endpoint)

llama_stack/distribution/routers/routing_tables.py

@@ -568,7 +568,7 @@ class ToolGroupsRoutingTable(CommonRoutingTableImpl, ToolGroups):
         tool_defs = await self.impls_by_provider_id[provider_id].list_runtime_tools(toolgroup_id, mcp_endpoint)
         tool_host = ToolHost.model_context_protocol if mcp_endpoint else ToolHost.distribution
 
-        for tool_def in tool_defs:
+        for tool_def in tool_defs.data:
             tools.append(
                 ToolWithACL(
                     identifier=tool_def.name,