[fix] anthropic during call error

[uc4w6c]

Relevant issues

#N/A

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Type

🐛 Bug Fix
✅ Test

Changes

Fixed the issue where calling a guardrail during during_call from /v1/messages requests triggered the following error.

traceback:"  File "/usr/lib/python3.13/site-packages/litellm/proxy/anthropic_endpoints/endpoints.py", line 53, in anthropic_response
    result = await base_llm_response_processor.base_process_llm_request(
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<16 lines>...
    )
    ^
  File "/usr/lib/python3.13/site-packages/litellm/proxy/common_request_processing.py", line 560, in base_process_llm_request
    responses = await llm_responses
                ^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.13/site-packages/litellm/proxy/utils.py", line 1305, in during_call_hook
    raise e
  File "/usr/lib/python3.13/site-packages/litellm/proxy/utils.py", line 1302, in during_call_hook
    await asyncio.gather(*guardrail_tasks)
  File "/usr/lib/python3.13/site-packages/litellm/proxy/guardrails/guardrail_hooks/unified_guardrail/unified_guardrail.py", line 135, in async_moderation_hook
    CallTypes(call_type)
    ~~~~~~~~~^^^^^^^^^^^
  File "/usr/lib/python3.13/enum.py", line 726, in __call__
    return cls.__new__(cls, value)
           ~~~~~~~~~~~^^^^^^^^^^^^
  File "/usr/lib/python3.13/enum.py", line 1203, in __new__
    raise ve_exc
",
error_code:"",
error_class:"ValueError",
llm_provider:"",
error_message:"None is not a valid CallTypes"

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Project	Deployment	Review	Updated (UTC)
litellm	Ready	Preview, Comment	Jan 14, 2026 4:59am