We have upgraded the product to App Kit and recommend using it for all production deployments. USDCKit will remain available as a private beta product. Thank you.
@circle-fin/usdckit - v0.25.4
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    Type Alias CreateContractExecutionTransactionInput

    CreateContractExecutionTransactionInput: Merge<
        Omit<_CreateContractExecutionTransactionInput, "walletId">,
        {
            blockchain?: Blockchain;
            callData?: `0x${string}`;
            sourceAddress?: string;
            waitForTransactionHash?: boolean;
            walletId?: string;
        } & ControlFlowOptions,
    >