Arize Phoenix TS
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    Tool call information.

    Represents a complete tool call made by an LLM, including the call ID and function details.

    interface ToolCall {
        function?: ToolCallFunction;
        id?: string;
        reasoningSignature?: string;
    }
    Index

    Properties

    function?: ToolCallFunction
    id?: string
    reasoningSignature?: string

    Opaque vendor-issued reasoning echo token attached to a tool call. Maps to Gemini thoughtSignature when it is attached to a functionCall part. The value is preserved verbatim for stateless replay.