BerriAI/litellm · error · OCIError

OCI only supports function tools

Error message

OCI only supports function tools

What it means

Error "OCI only supports function tools" thrown in BerriAI/litellm.

Source

Thrown at litellm/llms/oci/chat/generic.py:222

            new_messages.append(adapt_messages_to_generic_oci_standard_tool_response(role, tool_call_id, content))

    return new_messages


# ---------------------------------------------------------------------------
# Tool definition adaptation
# ---------------------------------------------------------------------------


def adapt_tool_definition_to_oci_standard(tools: list[dict], vendor: OCIVendors) -> list[OCIToolDefinition]:
    """Convert OpenAI-format tool definitions to OCI GENERIC format.

    Resolves ``$ref``/``$defs`` and ``anyOf`` that the OCI endpoint rejects.
    """
    new_tools: Final = []
    for tool in tools:
        if tool["type"] != "function":
            raise OCIError(status_code=400, message="OCI only supports function tools")

        tool_function = tool.get("function")
        if not isinstance(tool_function, dict):
            raise OCIError(status_code=400, message="Tool `function` must be a dictionary")

        raw_params = tool_function.get("parameters", {})
        resolved_params = sanitize_oci_schema(resolve_oci_schema_anyof(resolve_oci_schema_refs(raw_params)))

        new_tools.append(
            OCIToolDefinition(
                type="FUNCTION",
                name=tool_function.get("name"),
                description=tool_function.get("description", ""),
                parameters=resolved_params,
            )
        )

    return new_tools

View on GitHub (pinned to 6c2dcb801b)

Solutions

1. Use only function tools for OCI.

When it happens

Trigger: Thrown at litellm/llms/oci/chat/generic.py:222 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/2257061b02e487fd. Report an issue: GitHub.