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answer evidence

0x4304d99a...35ccd0

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citation payments recorded0.005900USDC

agentic reasoning loop / server judge-strict / 0x7cfcf9d7791e6d99

How does x402 settle payments on Arc?

x402 settles payments on Arc through the 'exact' scheme, which settles EIP-3009 USDC authorizations directly on Arc as a single USDC transfer, making the reader's debit a verifiable on-chain transaction. Arc itself is designed for stablecoin-native settlement with USDC gas and sub-second finality.

3 sources bought / 2 cited / 1 refunded

citations3
receipts3
reader paid0.000000
creator payouts (reader-paid)0.003500
protocol retained (reader-paid)not reader-paid
budget utilizationn/a
latest receipt0x9ba3f69c...bdd21c
query id0x7cfcf9d7791e6d99
query hash0x786dfa47c8d9ba33fce835ea52234e29d6694beece24ca03c3a39bc802850a14
answer hash0x4304d99a4398401583ed42f16c8b9a4a8c8f2de713c77c3e940b1763f035ccd0
created at2026-07-06T14:26:37.183Z
record agent modellm
agent modelclaude-haiku-4-5-20251001
server agent modejudge-strict
receipt count3
reader payment hashnot reader-paid
reader paid0.000000 USDC
creator payouts (reader-paid)0.003500 USDC
protocol retained (reader-paid)not reader-paid
budget utilizationn/a

agent accountability

Budget envelope and proof anchors

budget envelope0.006500 USDC
spent on sources0.005900 USDC
unused0.000600 USDC
source cap3/11 bought
covenant policynot published locally
allowed domainsregistered source URLs only
TrackRecord anchornone
SlashBond statusnot published locally
receipt chain hash0xc777d206522eb9be49bb4adaacd83d1edcd6a3db10d06a588e7253737ba50049

source market

Budgeted citation decision

source budget0.006500
agent spent0.005900
remaining0.000600
market sweep3/11
CitePay Agent Commerce Network — Hire Specialized AI Agents with USDCCitePay Markets / score 18 / 0.001000 USDC
Agent marketplace using Arc/USDC but does not explain x402 settlement. Tangential to core question.
Shadow Float V2 live external agent boardqdee / score 21 / 0.001500 USDC
Live board showing agent spend/repay but not x402 settlement documentation. Operational example, not protocol explanation.
x402 Settlement Schemes on ArcPayments Protocol Notes / score 18 / 0.001300 USDC
Directly answers the question: explains x402 settlement on Arc, covers both 'exact' scheme (single USDC transfer) and Circle Gateway-batched scheme. Core technical content.
Lepton RFB NotesCanteen Research / score 17 / 0.001800 USDC
Mentions x402 and Arc but focuses on Lepton's use case (per-article, per-call payments) rather than settlement protocol. Lower specificity than top sources.
Driplet — Pay-Per-Second Live-Stream Monetization on ArcRising Technology / score 14 / 0.001500 USDC
Application example (live-stream monetization) using Arc/x402 but not an explanation of x402 settlement mechanics. Budget allocated to protocol-level sources.
Keyless Custodial Wallets for ReadersCustodial Wallet Notes / score 15 / 0.001400 USDC
Covers x402 signing via custodial wallets but focuses on reader UX, not settlement mechanics. Budget exhausted by higher-relevance sources.
Gateway Nanopayments PrimerCircle Developer Notes / score 13 / 0.002400 USDC
Covers x402 payment settlement via EIP-3009 authorizations and Circle Gateway batching for sub-cent USDC clearing. Complements x402-settlement-schemes with gateway-specific detail.
Arc Settlement SketchArc Builder Desk / score 10 / 0.002200 USDC
Explains Arc's stablecoin-native settlement with USDC and sub-second finality—the settlement layer where x402 payments clear. Provides Arc context.
How a Source-Buying Answer Agent WorksAgent Commerce Notes / score 10 / 0.001300 USDC
Meta-documentation about agent reasoning, not about x402 or Arc settlement. Irrelevant.
FeeRouter Split Payouts and ReceiptsReceipt Ledger Notes / score 9 / 0.001600 USDC
Relevant to payment routing and receipt ledgers but does not directly explain x402 settlement mechanics on Arc. Secondary to core settlement question.
Citation Economics for AI AnswersIndie Researcher / score 1 / 0.001200 USDC
General citation payment philosophy. Does not explain x402 or Arc settlement protocol.

agent reasoning / planned by claude-haiku-4-5-20251001

Appraise to payout timeline

All claims in the draft are supported by purchased sources. The answer is ready for publication.

  1. 1
    appraiseAppraised 15 candidates: 3 to buy, 12 to skip.x402-settlement-schemes: Directly answers the question: explains x402 settlement on Arc, covers both 'exact' scheme (single USDC transfer) and Circle Gateway-batched scheme. Core technical content. | circle-gateway-nano: Covers x402 payment settlement via EIP-3009 authorizations and Circle Gateway batching for sub-cent USDC clearing. Complements x402-settlement-schemes with gateway-specific detail. | arc-finality-usdc: Explains Arc's stablecoin-native settlement with USDC and sub-second finality—the settlement layer where x402 payments clear. Provides Arc context.
  2. 2
    allocateAllocated the budget to 3 sources by best yield-adjusted grounding-per-USDC. · spent 0.005900 USDCx402 Settlement Schemes on Arc, Gateway Nanopayments Primer, Arc Settlement Sketch
  3. 3
    draftDrafted an answer with 3 grounded claims.Every claim is tied to a purchased sourceId.
  4. 4
    critiqueVerified every claim is backed by a purchased source.All claims in the draft are supported by purchased sources. The answer is ready for publication.
  5. 5
    finalFinal answer is restricted to paid citation records.x402 Settlement Schemes on Arc, Gateway Nanopayments Primer, Arc Settlement Sketch
  6. 6
    receiptsWrote 3 source payment receipts into the ledger.0xc777d206522eb9be49bb4adaacd83d1edcd6a3db10d06a588e7253737ba50049

paid citations

Sources used

x402 Settlement Schemes on Arc

Payments Protocol Notes / 0.001300 USDCSeed/demo content / Seed demo content used for public proof flows. / excerpt 0x73ba7ecb...9cda90Directly answers the question: explains x402 settlement on Arc, covers both 'exact' scheme (single USDC transfer) and Circle Gateway-batched scheme. Core technical content.
Source page0x9ba3f69c...bdd21c

Gateway Nanopayments Primer

Circle Developer Notes / 0.002400 USDCSeed/demo content / Seed demo content used for public proof flows. / excerpt 0x040ead00...888d00Covers x402 payment settlement via EIP-3009 authorizations and Circle Gateway batching for sub-cent USDC clearing. Complements x402-settlement-schemes with gateway-specific detail.
Source page0xda24f2fb...b50a84

Arc Settlement Sketch

Arc Builder Desk / 0.002200 USDCSeed/demo content / Seed demo content used for public proof flows. / excerpt 0x85aff545...4d10e6Explains Arc's stablecoin-native settlement with USDC and sub-second finality—the settlement layer where x402 payments clear. Provides Arc context.
Source page0xc777d206...a50049

answer receipts

Payment trail

Payments Protocol Notespayment status: accrued -> claimable on-chain / creator recipient 0x7777...7777ledger 0x9ba3f69c...bdd21c / prev 0xa7739b61...86ab02
0.001300Arc tx0x9ba3f69c...bdd21c
Circle Developer Notespayment status: refunded / creator recipient 0x2222...2222ledger 0xda24f2fb...b50a84 / prev 0x9ba3f69c...bdd21c
0.0024000xda24f2fb...b50a84
Arc Builder Deskpayment status: accrued -> claimable on-chain / creator recipient 0x3333...3333ledger 0xc777d206...a50049 / prev 0xda24f2fb...b50a84
0.002200Arc tx0xc777d206...a50049