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answer evidence

0x43f62a81...5f983c

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citation payments recorded0.005900USDC

agentic reasoning loop / server judge-strict / 0x677da74ffbe3f5b7

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 receipt0x9f6fabb0...5a0010
query id0x677da74ffbe3f5b7
query hash0x20d43b57895d9834a7beceda0cc809fcd13eee55230ad7e482a3827575d5e92a
answer hash0x43f62a81aacded36bf272da911187e7d66112a78046e5b71a7a65829cc5f983c
created at2026-07-06T14:27:20.477Z
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 hash0xca6e96ff09186833f26775e7532ad1aff9c3f8713e53b26a5cf006ff1f28d81d

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 on Arc using USDC; application context but not x402 settlement explanation.
x402 Settlement Schemes on ArcPayments Protocol Notes / score 18 / 0.001300 USDC
Directly answers the question: explains x402 settlement on Arc, EIP-3009 authorization flow, 'exact' scheme (single USDC transfer), and Circle Gateway-batched scheme. Core technical content.
Shadow Float V2 live external agent boardqdee / score 21 / 0.001500 USDC
Live agent spend board on Arc; operational example but not x402 settlement documentation.
Lepton RFB NotesCanteen Research / score 17 / 0.001800 USDC
Mentions x402 and Arc but focuses on Lepton's sub-cent value moves for agents/creators. Does not explain x402 settlement mechanics on Arc.
Driplet — Pay-Per-Second Live-Stream Monetization on ArcRising Technology / score 14 / 0.001500 USDC
Application example (live-stream monetization) using Arc/Circle nanopayments, but not a technical reference for x402 settlement.
Keyless Custodial Wallets for ReadersCustodial Wallet Notes / score 15 / 0.001400 USDC
Covers Circle W3S custodial wallets and x402 EIP-3009 signing, but focuses on reader UX rather than settlement mechanics on Arc.
Gateway Nanopayments PrimerCircle Developer Notes / score 13 / 0.002400 USDC
Covers x402 payment clearing via Circle Gateway batching of EIP-3009 authorizations, sub-cent settlement without per-payment gas. Complements exact scheme with batched alternative.
Arc Settlement SketchArc Builder Desk / score 10 / 0.002200 USDC
Describes Arc's stablecoin-native settlement with USDC, sub-second finality, and payment app kits. Provides Arc infrastructure context for x402 settlement.
How a Source-Buying Answer Agent WorksAgent Commerce Notes / score 10 / 0.001300 USDC
Describes agent source-buying workflow, not x402 or Arc settlement.
FeeRouter Split Payouts and ReceiptsReceipt Ledger Notes / score 9 / 0.001600 USDC
Describes FeeRouter payout routing and receipt ledger, relevant to creator payment distribution but not x402 settlement mechanism itself.
Citation Economics for AI AnswersIndie Researcher / score 1 / 0.001200 USDC
General citation payment philosophy; does not explain x402 or Arc settlement.

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, EIP-3009 authorization flow, 'exact' scheme (single USDC transfer), and Circle Gateway-batched scheme. Core technical content. | circle-gateway-nano: Covers x402 payment clearing via Circle Gateway batching of EIP-3009 authorizations, sub-cent settlement without per-payment gas. Complements exact scheme with batched alternative. | arc-finality-usdc: Describes Arc's stablecoin-native settlement with USDC, sub-second finality, and payment app kits. Provides Arc infrastructure context for x402 settlement.
  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.0xca6e96ff09186833f26775e7532ad1aff9c3f8713e53b26a5cf006ff1f28d81d

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, EIP-3009 authorization flow, 'exact' scheme (single USDC transfer), and Circle Gateway-batched scheme. Core technical content.
Source page0x9f6fabb0...5a0010

Gateway Nanopayments Primer

Circle Developer Notes / 0.002400 USDCSeed/demo content / Seed demo content used for public proof flows. / excerpt 0x040ead00...888d00Covers x402 payment clearing via Circle Gateway batching of EIP-3009 authorizations, sub-cent settlement without per-payment gas. Complements exact scheme with batched alternative.
Source page0x98f41b37...dc33a2

Arc Settlement Sketch

Arc Builder Desk / 0.002200 USDCSeed/demo content / Seed demo content used for public proof flows. / excerpt 0x85aff545...4d10e6Describes Arc's stablecoin-native settlement with USDC, sub-second finality, and payment app kits. Provides Arc infrastructure context for x402 settlement.
Source page0xca6e96ff...28d81d

answer receipts

Payment trail

Payments Protocol Notespayment status: accrued -> claimable on-chain / creator recipient 0x7777...7777ledger 0x9f6fabb0...5a0010 / prev 0xc777d206...a50049
0.001300Arc tx0x9f6fabb0...5a0010
Circle Developer Notespayment status: refunded / creator recipient 0x2222...2222ledger 0x98f41b37...dc33a2 / prev 0x9f6fabb0...5a0010
0.0024000x98f41b37...dc33a2
Arc Builder Deskpayment status: accrued -> claimable on-chain / creator recipient 0x3333...3333ledger 0xca6e96ff...28d81d / prev 0x98f41b37...dc33a2
0.002200Arc tx0xca6e96ff...28d81d