x402 Settlement Schemes on Arc
Payments Protocol Notes / 0.001300 USDCreceipt evidence
0xd7c53986...361e70
creator amount0.001300USDC
accrued -> claimable on-chain
Payments Protocol Notes
This receipt binds a source payment to the answer that used it; FeeRouter-routed receipts accrue into creator-claimable balances. The previous hash links it into the append-only attribution ledger.
payment statusaccrued -> claimable on-chain
settlement modeforum-routed
amount0.001300 USDC
receipt hash0xd7c539861bbc2c2c02b93e76ca486f2cdc54ef06803b068db9bb7de762361e70
previous hash0x42292df9b92dd44313b1a7d637b6452a76c49e0ae5aa82527a88a02fcde5cc42
query id0x65006411d9806434
source idx402-settlement-schemes
creator wallet0x7777...7777
created at2026-07-07T03:36:14.193Z
payment resourceforum-fee-router:0xeff9bc359e8f2a5eabce55af3f1bb24f98eabf59
query payment hashnot reader-paid
payer0x4164F5B52ecc6F847f03071A287b0B59954cbcEe
Arc tx0x401c627c...ec1e97
FeeRouter split165
FeeRouter createSplit0x239b744b...443490
FeeRouter pay0x401c627c...ec1e97
contributorssingle recipient
canonical URLhttps://x402.org/
content fetched at2026-07-07T03:36:14.193Z
source content hash0xd96e190dd988ed140b94b726858ff04aa8fe7d0e088e1c163fc4423029fb2b97
source excerpt hash0x73ba7ecb49bae825c4bbe8a00893c8c9fc983094c4b2ac78197903350c9cda90
ownership proofseed-demo
ownership signernot verified
answer context
How should AI agents pay creators per citation on Arc?
Based on the purchased sources, AI agents should pay creators per citation on Arc using settlement schemes that handle sub-cent transactions efficiently. The 'exact' scheme settles payment directly on Arc as a single USDC transfer via EIP-3009 authorization, making the reader's debit a verifiable on-chain transaction. Alternatively, the Circle Gateway-batched scheme pools multiple signed authorizations for gasless sub-cent settlement. To manage the volume of sub-cent citations, creators should use FeeRouter, which routes USDC through an on-chain split contract keyed to the creator's wallet, accumulates sub-cent citations to a claimable balance, and allows the creator to withdraw with a single claim call—keeping per-citation gas costs manageable.
Open answer evidenceExplains x402 HTTP 402 payment protocol and Arc settlement mechanics for USDC citations. Essential technical foundation.Seed/demo content from Payments Protocol Notes. Title: x402 Settlement Schemes on Arc. Excerpt: x402 turns HTTP 402 into a real payment step: a resource returns payment requirements, the client signs an EIP-3009 USDC authorization, and the server settles it. The 'exact' scheme settles that authorization directly on Arc as a single USDC transfer, so the reader's debit is a verifiable on-chain transaction. The Circle Gateway-batched scheme instead pools many signed authorizations for gasless sub-cent settlement, referenced by a Gateway payment id rather than one Arc tx. Tags: x402, eip-3009, settlement, arc, usdc. Canonical URL: https://x402.org/.