Arc Paymaster Economics

Model Circle Paymaster USDC-as-gas economics on Arc vs native gas on Ethereum. Circle Paymaster implements ERC-4337 account abstraction — allowing agents and users to pay gas in USDC or be sponsored. Outputs per-UserOperation costs, sponsorship break-even, and a CFO memo. Grounded in ERC-4337 spec and Circle Arc Paymaster documentation. Client-side. Zero PII.

AP2 Export Wave 10 ERC-4337 USDC Gas · Paymaster Arc L1 treasury_mandate

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UserOperation & Gas Profile

Monthly UserOperations (count) ERC-4337 UserOperations per month (agent transactions + bundler overhead)

Gas per UserOperation (gas units) Estimated gas units per ERC-4337 UserOperation. Simple transfer ~21k; account abstraction adds validation overhead (~100–200k total).

Arc gas price (Gwei) Arc L1 gas price in Gwei. Arc targets sub-cent fees. Default: 0.001 Gwei (estimate — adjust to current network conditions).

ETH price (USD) ETH/USD price for gas cost conversion (used for Ethereum comparison baseline)

Sponsorship % (Paymaster covers gas) % of UserOperations where a Paymaster sponsors (covers) gas on behalf of user/agent. 0 = user pays all. 100 = full sponsorship.

Paymaster overhead per sponsored UOp (USD) Paymaster infrastructure cost per sponsored UserOperation (bundler premium, Paymaster deposit management). User-adjustable estimate.

Ethereum L1 gas price (Gwei, for comparison) Current Ethereum L1 base fee in Gwei (for baseline comparison). Does not affect Arc cost.

Cost Comparison — Arc Paymaster vs Ethereum

UserOperation cost table

Configuration	Gas price	Cost per UOp (USD)	Monthly cost	Annual cost

CFO Memo — Paymaster Economics