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The XenarchSplitter is a minimal Solidity contract that splits incoming USDC payments between content publishers and the Xenarch treasury. It is the single settlement mechanism for all Xenarch payments.

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Deployments

NetworkAddressUSDC
Base Mainnet0xC6D3a6B6fcCD6319432CDB72819cf317E88662ae0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Base Sepolia0x7ecfe8f83eab6ba170063d1f1fe7c33695a9ce1d0xc5aDdd66Da733101A5468857Aa3C6689Af9d1DDc (mock)
Both contracts are verified on Basescan.

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How it works

  1. Agent approves USDC on the splitter contract
  2. Agent calls split(collector, amount) where collector is the publisher’s wallet
  3. Contract calculates fee: fee = (amount * feeBps) / 10_000
  4. Contract transfers amount - fee to publisher, fee to treasury
  5. Contract emits a Split event with payer, collector, amount, and fee

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Key properties

PropertyValue
Fee0% (currently), capped at 0.99% forever
Max payment$1.00 (1,000,000 USDC satoshis)
Min payment$0.000001 (1 USDC satoshi)
Fee capMAX_FEE_BPS = 99 — immutable constant, cannot be changed
PausableOwner can pause splits for emergencies
USDC onlyHardcoded to USDC on Base

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Security

  • Immutable fee cap: The MAX_FEE_BPS constant cannot be changed after deployment. Publishers are guaranteed fees will never exceed 0.99%.
  • SafeERC20: Uses OpenZeppelin’s SafeERC20 for all USDC transfers.
  • No reentrancy risk: No external calls before state changes.
  • Verified source: Bytecode published and verified on Basescan.
  • Minimal surface: 57 lines of Solidity. Single responsibility.

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Building from source

# Install Foundry
curl -L https://foundry.paradigm.xyz | bash
foundryup

# Clone and build
git clone https://github.com/xenarch-ai/xenarch-contract
cd xenarch-contract
forge build

# Run tests
forge test -vvv