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

Ask your agent

Copy this paragraph into Claude, OpenClaw, or any MCP-aware agent to run this exact tool, with this sample, and verify the artifact.

Run the AINumbers MCP tool `model_arc_paymaster_economics`. Task: Model Circle Paymaster USDC-as-gas economics on Arc vs native ETH gas on Ethereum for ERC-4337 UserOperations.
Call it with arguments: {"policy_parameters":{"gas_per_uop":150000,"gas_price_gwei":30,"eth_price_usd":3500,"arc_usdc_per_gas_unit":0.000001,"monthly_uops":50000,"merchant_sponsorship_pct":80,"impl_months":3}}
Verify before trusting: call `verify_execution_hash` on mcp.ainumbers.co (https://mcp.ainumbers.co/mcp) with the parameter `claimed_hash` set to the returned `execution_hash`, passing the full artifact the run returned (the object containing `policy_parameters` + `output_payload` + `execution_hash`; equivalently `policy_parameters` + `output_payload` with `claimed_hash`), not the bare hash string.
Return the ledger link https://ledger.ainumbers.co/ so a human can re-verify without contacting us.
PII rule: All inputs are processed locally in your browser. No data is transmitted. Do not enter real personal data — use synthetic or anonymised inputs only.
Open the tool with the sample prefilled: https://ainumbers.co/chaingraph/art-46-arc-paymaster-model.html#p=v1.H4sIAAAAAAAA_wGjAFz_eyJnYXNfcGVyX3VvcCI6MTUwMDAwLCJnYXNfcHJpY2VfZ3dlaSI6MzAsImV0aF9wcmljZV91c2QiOjM1MDAsImFyY191c2RjX3Blcl9nYXNfdW5pdCI6MC4wMDAwMDEsIm1vbnRobHlfdW9wcyI6NTAwMDAsIm1lcmNoYW50X3Nwb25zb3JzaGlwX3BjdCI6ODAsImltcGxfbW9udGhzIjozfQzOIeSjAAAA