Fee Manager

The system contract that holds accumulated protocol fees. The owner can withdraw the contract's full balance to a recipient address. There is no other operation; fees are paid into this address by the protocol and accumulate until withdrawn.

Address

Constant	Address
PRECOMPILE_FEE_MANAGER	0x0000000000000000000000000000000000520fee

Authority

Constant	Default address
DEFAULT_FEE_MANAGER_AUTH	0xa7bf6a9168fe8a111307b7c94b8883fe02b30934

The owner defaults to the genesis-init value. Live networks rotate it. The contract reads its stored owner first and falls back to the default only when the slot is zero. changeOwner(address) transfers ownership (zero-address rejected); renounceOwnership() sets the owner to the system address (0xfffffffffffffffffffffffffffffffffffffffe).

Interface

function withdraw(address recipient) external;
function changeOwner(address newOwner) external;
function owner() external view returns (address);
function renounceOwnership() external;

withdraw is owner-only and transfers the contract's full balance to recipient. Reverts if the contract balance is zero (fee-manager: nothing to withdraw).

Events

event FeeWithdrawn(address recipient, uint256 amount);
event OwnerChanged(address newOwner);

Errors

All failure paths use Rust panic! and surface as EVM revert. Messages:

• fee-manager: incorrect caller
• fee-manager: nothing to withdraw
• fee-manager: can't send funds to recipient
• fee-manager: can't obtain self balance

Routing note

PRECOMPILE_FEE_MANAGER is not in EXECUTE_USING_SYSTEM_RUNTIME_ADDRESSES. The contract is pre-deployed at genesis and executes as a normal rWasm contract — no system-runtime envelope, no per-runtime storage prefetch. Standard CALL semantics apply.

Source

fluentbase/contracts/fee-manager/