Contract Reference

Constructor

constructor(address _usdc, address _treasury)

Parameter	Description
`_usdc`	USDC token address
`_treasury`	Treasury wallet for fee collection

Sets owner to msg.sender. Fee starts at 0%.

Functions

split

function split(address collector, uint256 amount) external

Split a USDC payment between the publisher (collector) and treasury.

Parameter	Type	Description
`collector`	address	Publisher’s wallet address
`amount`	uint256	USDC amount in satoshis (6 decimals)

Requirements:

Not paused
amount between 1 and 1,000,000 (inclusive)
Caller has approved sufficient USDC on the splitter

Behavior:

Transfers amount - fee to collector
Transfers fee to treasury (if fee > 0)
Emits Split event

setFee

function setFee(uint256 _newFeeBps) external

Update the fee in basis points. Owner only.

Parameter	Type	Description
`_newFeeBps`	uint256	New fee in basis points (max 99)

setTreasury

function setTreasury(address _newTreasury) external

Update the treasury address. Owner only.

setPaused

function setPaused(bool _paused) external

Pause or unpause the contract. Owner only.

Events

Split

event Split(
    address indexed payer,
    address indexed collector,
    uint256 amount,
    uint256 fee
)

Emitted on every successful split() call.

Field	Description
`payer`	Agent wallet that sent the payment
`collector`	Publisher wallet that received the payment
`amount`	Gross USDC amount (satoshis)
`fee`	Fee deducted (satoshis)

Constants

uint256 public constant MAX_FEE_BPS = 99;  // 0.99% — immutable

State variables

Variable	Type	Description
`owner`	address	Contract owner
`treasury`	address	Fee collection wallet
`usdc`	IERC20 (immutable)	USDC token
`paused`	bool	Pause flag
`feeBps`	uint256	Current fee in basis points

ABI (human-readable)

const SPLITTER_ABI = [
  "function split(address collector, uint256 amount) external",
  "function setFee(uint256 _newFeeBps) external",
  "function setTreasury(address _newTreasury) external",
  "function setPaused(bool _paused) external",
  "function owner() view returns (address)",
  "function treasury() view returns (address)",
  "function feeBps() view returns (uint256)",
  "function paused() view returns (bool)",
  "function MAX_FEE_BPS() view returns (uint256)",
  "event Split(address indexed payer, address indexed collector, uint256 amount, uint256 fee)",
];

Fee calculation

fee = (amount * feeBps) / 10_000
net = amount - fee

Examples (at 99 bps / 0.99%):

Amount (USD)	USDC units	Fee	Net
$0.003	3,000	29	2,971
$0.01	10,000	99	9,901
$0.10	100,000	990	99,010
$1.00	1,000,000	9,900	990,100

At the current fee of 0%, all amounts go directly to the publisher.

Getting Started

MCP Server

Smart Contract

Integrations

Examples

Contract Reference

Constructor

Functions

split

setFee

setTreasury

setPaused

Events

Split

Constants

State variables

ABI (human-readable)

Fee calculation

​Constructor

​Functions

​split

​setFee

​setTreasury

​setPaused

​Events

​Split

​Constants

​State variables

​ABI (human-readable)

​Fee calculation

Constructor

Functions

split

setFee

setTreasury

setPaused

Events

Split

Constants

State variables

ABI (human-readable)

Fee calculation