feat: populate tool call name and id in when token streaming (#2639)

letta/interfaces/anthropic_streaming_interface.py

@@ -277,7 +277,9 @@ class AnthropicStreamingInterface:
                                 # Otherwise, it is a normal tool call - buffer or yield based on inner thoughts status
                                 tool_call_msg = ToolCallMessage(
                                     id=self.letta_tool_message_id,
-                                    tool_call=ToolCallDelta(arguments=delta.partial_json),
+                                    tool_call=ToolCallDelta(
+                                        name=self.tool_call_name, tool_call_id=self.tool_call_id, arguments=delta.partial_json
+                                    ),
                                     date=datetime.now(timezone.utc).isoformat(),
                                 )
                                 if self.inner_thoughts_complete:

letta/interfaces/openai_streaming_interface.py

@@ -295,7 +295,7 @@ class OpenAIStreamingInterface:
                                                 id=self.letta_tool_message_id,
                                                 date=datetime.now(timezone.utc),
                                                 tool_call=ToolCallDelta(
-                                                    name=None,
+                                                    name=self.function_name_buffer,
                                                     arguments=combined_chunk,
                                                     tool_call_id=self.function_id_buffer,
                                                 ),