Arize Phoenix TS
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    anthropicToolChoiceSchema: ZodDiscriminatedUnion<
        [
            ZodObject<{ name: ZodString; type: ZodLiteral<"tool"> }, $strip>,
            ZodObject<{ type: ZodLiteral<"auto"> }, $strip>,
            ZodObject<{ type: ZodLiteral<"any"> }, $strip>,
        ],
        "type",
    > = ...

    Anthropic's tool choice schema