Question : Custom model : Instructor does not support multiple tool calls, use List[Model] instead.

[俞航]

Hi,

I am trying to use a custom openai endpoint model (basically a service with openai api proxy that runs a custom model behind the scene, pretty much like ollama but fully compatible with openai module).

I am having this error:

Task exception was never retrieved
future: <Task finished name='Task-14' coro=<generate_related_queries() done, defined at /home/hangyu5/Documents/Gitrepo-My/AIResearchVault/repo/LLMApp/farfalle/src/backend/related_queries.py:45> exception=AssertionError('Instructor does not support multiple tool calls, use List[Model] instead.')>
Traceback (most recent call last):
  File "/home/hangyu5/Documents/Gitrepo-My/AIResearchVault/repo/LLMApp/farfalle/src/backend/related_queries.py", line 53, in generate_related_queries
    related = await client.chat.completions.create(
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/hangyu5/anaconda3/envs/farfalle/lib/python3.11/site-packages/instructor/client.py", line 273, in create
    return await self.create_fn(
           ^^^^^^^^^^^^^^^^^^^^^
  File "/home/hangyu5/anaconda3/envs/farfalle/lib/python3.11/site-packages/instructor/patch.py", line 119, in new_create_async
    response = await retry_async(
               ^^^^^^^^^^^^^^^^^^
  File "/home/hangyu5/anaconda3/envs/farfalle/lib/python3.11/site-packages/instructor/retry.py", line 219, in retry_async
    async for attempt in max_retries:
  File "/home/hangyu5/anaconda3/envs/farfalle/lib/python3.11/site-packages/tenacity/_asyncio.py", line 123, in __anext__
    do = await self.iter(retry_state=self._retry_state)
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/hangyu5/anaconda3/envs/farfalle/lib/python3.11/site-packages/tenacity/_asyncio.py", line 110, in iter
    result = await action(retry_state)
             ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/hangyu5/anaconda3/envs/farfalle/lib/python3.11/site-packages/tenacity/_asyncio.py", line 78, in inner
    return fn(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^
  File "/home/hangyu5/anaconda3/envs/farfalle/lib/python3.11/site-packages/tenacity/__init__.py", line 410, in exc_check
    raise retry_exc.reraise()
          ^^^^^^^^^^^^^^^^^^^
  File "/home/hangyu5/anaconda3/envs/farfalle/lib/python3.11/site-packages/tenacity/__init__.py", line 183, in reraise
    raise self.last_attempt.result()
          ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/hangyu5/anaconda3/envs/farfalle/lib/python3.11/concurrent/futures/_base.py", line 449, in result
    return self.__get_result()
           ^^^^^^^^^^^^^^^^^^^
  File "/home/hangyu5/anaconda3/envs/farfalle/lib/python3.11/concurrent/futures/_base.py", line 401, in __get_result
    raise self._exception
  File "/home/hangyu5/anaconda3/envs/farfalle/lib/python3.11/site-packages/instructor/retry.py", line 226, in retry_async
    return await process_response_async(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/hangyu5/anaconda3/envs/farfalle/lib/python3.11/site-packages/instructor/process_response.py", line 75, in process_response_async
    model = response_model.from_response(
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/hangyu5/anaconda3/envs/farfalle/lib/python3.11/site-packages/instructor/function_calls.py", line 115, in from_response
    return cls.parse_tools(completion, validation_context, strict)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/hangyu5/anaconda3/envs/farfalle/lib/python3.11/site-packages/instructor/function_calls.py", line 201, in parse_tools
    len(message.tool_calls or []) == 1
AssertionError: Instructor does not support multiple tool calls, use List[Model] instead.

Simply want to confirm that it is my model that cannot proceed with these function calls, nothing to do with instructor or farfalle, right?

Thanks!

[rashad]

If you're getting this error consistently it's likely that the model does not support function calls.

[俞航]

Thanks!