ADK for TypeScript: API Reference
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    Variable requestInputToolConst

    requestInputTool: LongRunningFunctionTool<
        ZodObject<
            {
                message: ZodString;
                response_schema: ZodOptional<ZodRecord<ZodString, ZodUnknown>>;
            },
            $strip,
        >,
    > = ...

    A long-running tool that presents a custom message to the user and awaits unstructured or structured input.

    response_schema is spelled the way a workflow's RequestInput spells it on the wire (RESPONSE_SCHEMA_ARG in workflow/utils/hitl_utils), so a client reads one key whichever way the pause was raised — the dev UI builds its reply form from it either way.