BerriAI/litellm · error · ValueError

request is required for completion bridge

Error message

request is required for completion bridge

What it means

Error "request is required for completion bridge" thrown in BerriAI/litellm.

Source

Thrown at litellm/a2a_protocol/main.py:448

                message={"role": "user", "parts": [{"kind": "text", "text": "Hello!"}], "messageId": uuid4().hex}
            )
        )
        response = await asend_message(
            request=request,
            api_base="http://localhost:2024",
            litellm_params={"custom_llm_provider": "langgraph", "model": "agent"},
        )
        ```
    """
    litellm_params = litellm_params or {}
    logging_obj: Final = kwargs.get("litellm_logging_obj")
    trace_id = getattr(logging_obj, "litellm_trace_id", None) if logging_obj else None
    custom_llm_provider: Final = litellm_params.get("custom_llm_provider")

    # Route through completion bridge if custom_llm_provider is set
    if custom_llm_provider:
        if request is None:
            raise ValueError("request is required for completion bridge")
        return await _send_message_via_completion_bridge(
            request=request,
            custom_llm_provider=custom_llm_provider,
            api_base=api_base,
            litellm_params=litellm_params,
            agent_extra_headers=agent_extra_headers,
        )

    # Standard A2A client flow
    if request is None:
        raise ValueError("request is required")

    # Create A2A client if not provided but api_base is available
    if a2a_client is None:
        if api_base is None:
            raise ValueError("Either a2a_client or api_base is required for standard A2A flow")
        trace_id = trace_id or str(uuid.uuid4())
        extra_headers: Final[dict[str, str]] = {"X-LiteLLM-Trace-Id": trace_id}

View on GitHub (pinned to 6c2dcb801b)

Solutions

1. Pass a request object when invoking the completion bridge.

When it happens

Trigger: Thrown at litellm/a2a_protocol/main.py:448 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of BerriAI/litellm@6c2dcb801b (2026-08-15). Data as JSON: /api/errors/d89fc413885934bc. Report an issue: GitHub.