Reactor Fee Manager

Application contracts use the Fee Manager only for read-only pricing and configuration. Obtain its address from IReactorGateway.feeManager().


interface IReactorFeeManager {
    function actionFeeDiscounts(string calldata action, address token) external view returns (uint256);
    function actionFees(string calldata destination, string calldata action, address token) external view returns (uint256);
    function callerFeeDiscounts(address caller, address token) external view returns (uint256);
    function callerFees(string calldata destination, address caller, address token) external view returns (uint256);
    function destinationFeeDiscounts(string calldata destination, address token) external view returns (uint256);
    function feeDiscounts(address token) external view returns (uint256);
    function feesPerByte(string calldata destination, address token) external view returns (uint256);
    function getSendFee(string calldata destination, string calldata action, address caller, address token, uint256 payloadSize) external view returns (uint256);
    function maxPayloadSize() external view returns (uint256);
    function paymentTokens(address token) external view returns (bool);
    function sendFees(string calldata destination, address token) external view returns (uint256);
}

For normal sends, call getSendFee(destination, action, address(this), paymentToken, payload.length). It combines the configured base, per-byte, caller, and action fees, applies discounts, verifies the payment token, and enforces the maximum payload size.

The developer SDK omits every setter, payment-token mutation, withdrawal, and role-management function.