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answer evidence

0x83e12262...11f6ad

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citation payments recorded0.005300USDC

agentic reasoning loop / server judge-strict / 0xd539ac919cdce1fa

How do agent payments work with x402 on Arc?

Agent payments with x402 on Arc work through two settlement schemes. In the 'exact' scheme, a resource returns payment requirements, the client signs an EIP-3009 USDC authorization, and the server settles it directly on Arc as a single USDC transfer, making the reader's debit a verifiable on-chain transaction. Alternatively, the Circle Gateway-batched scheme pools many signed authorizations for gasless sub-cent settlement, referenced by a Gateway payment id rather than individual Arc transactions. For multi-contributor works, the FeeRouter contract can route USDC through an on-chain split keyed to creator wallets with basis-point shares. Sub-cent citations accrue to a claimable FeeRouter balance that creators withdraw with a single claim call to avoid per-citation gas costs.

3 sources bought / 2 cited / 1 refunded

citations3
receipts3
reader paid0.000000
creator payouts (reader-paid)0.002900
protocol retained (reader-paid)not reader-paid
budget utilizationn/a
latest receipt0xe1fad72f...b8e015
query id0xd539ac919cdce1fa
query hash0x66a51c3242fd17b8c76cd4f6a49668f8492e32238cc531205d0b8b7744bd0f92
answer hash0x83e122624fcffddf04c650a797d2dd0b46711bd8c12ff3f00c4fc96e6e11f6ad
created at2026-07-06T14:58:56.402Z
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)0.002900 USDC
protocol retained (reader-paid)not reader-paid
budget utilizationn/a

agent accountability

Budget envelope and proof anchors

budget envelope0.006500 USDC
spent on sources0.005300 USDC
unused0.001200 USDC
source cap3/13 bought
covenant policy5.000000 USDC max
allowed domainsregistered source URLs only
TrackRecord anchornone
SlashBond statusnot published locally
receipt chain hash0xd637636c920403f4d36f4ab3df2cbd24ec03b0c2b49fa0a595ec537474998292

source market

Budgeted citation decision

source budget0.006500
agent spent0.005300
remaining0.001200
market sweep3/13
CitePay Agent Commerce Network — Hire Specialized AI Agents with USDCCitePay Markets / score 23 / 0.001000 USDC
Demonstrates agent-to-agent USDC payments on Arc but is a marketplace example rather than a technical explanation of x402 payment mechanics.
Shadow Float V2 live external agent boardqdee / score 26 / 0.001500 USDC
Live board of agent spending and repayment but lacks explanation of underlying x402 and settlement mechanics; better as supplementary reference.
x402 Settlement Schemes on ArcPayments Protocol Notes / score 17 / 0.001300 USDC
Directly answers the core question: explains x402 settlement on Arc, EIP-3009 USDC authorization flow, exact vs. Circle Gateway schemes, and how agent payments settle. Essential primary reference.
Lepton RFB NotesCanteen Research / score 18 / 0.001800 USDC
Skipped: lower value than the purchased source bundle.
Driplet — Pay-Per-Second Live-Stream Monetization on ArcRising Technology / score 13 / 0.001500 USDC
Shows live-stream nanopayment use case but not agent-specific; x402-settlement-schemes and feerouter sources are more directly applicable.
FeeRouter Split Payouts and ReceiptsReceipt Ledger Notes / score 10 / 0.001600 USDC
Explains on-chain payment routing, split logic, receipt ledgers, and how sub-cent citations accrue and claim—critical for understanding agent payout mechanics on Arc.
Keyless Custodial Wallets for ReadersCustodial Wallet Notes / score 14 / 0.001400 USDC
Relevant to reader-side payment UX but does not directly address agent payment mechanics; budget better spent on settlement and routing sources.
Gateway Nanopayments PrimerCircle Developer Notes / score 13 / 0.002400 USDC
Covers Circle Gateway batching of EIP-3009 authorizations for gasless x402 sub-cent settlement, a key mechanism for agent payments at scale on Arc.
Citation Economics for AI AnswersIndie Researcher / score 6 / 0.001200 USDC
Discusses citation payment philosophy but lacks technical x402 or Arc implementation details.
How a Source-Buying Answer Agent WorksAgent Commerce Notes / score 11 / 0.001300 USDC
Describes agent budget allocation and source appraisal but not x402 payment mechanics; off-topic for this question.
RSS Distribution SurfaceOpen Feed Maintainers / score 5 / 0.000900 USDC
RSS feed distribution is not relevant to x402 agent payment mechanics on Arc.
Arc Settlement SketchArc Builder Desk / score 10 / 0.002200 USDC
Provides Arc infrastructure context but lacks specifics on x402 agent payment workflows; lower priority than settlement and routing details.
Covenant Account Spend ControlsForum Protocol / score 5 / 0.001500 USDC
Covers spend controls and receipts but not x402 or Arc settlement; lower relevance to payment mechanics.

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

Appraise to payout timeline

All claims are supported by purchased sources. The answer is well-grounded.

  1. 1
    appraiseAppraised 15 candidates: 3 to buy, 12 to skip.x402-settlement-schemes: Directly answers the core question: explains x402 settlement on Arc, EIP-3009 USDC authorization flow, exact vs. Circle Gateway schemes, and how agent payments settle. Essential primary reference. | feerouter-splits-receipts: Explains on-chain payment routing, split logic, receipt ledgers, and how sub-cent citations accrue and claim—critical for understanding agent payout mechanics on Arc. | circle-gateway-nano: Covers Circle Gateway batching of EIP-3009 authorizations for gasless x402 sub-cent settlement, a key mechanism for agent payments at scale on Arc.
  2. 2
    allocateAllocated the budget to 3 sources by best yield-adjusted grounding-per-USDC. · spent 0.005300 USDCx402 Settlement Schemes on Arc, FeeRouter Split Payouts and Receipts, Gateway Nanopayments Primer
  3. 3
    draftDrafted an answer with 5 grounded claims.Every claim is tied to a purchased sourceId.
  4. 4
    critiqueVerified every claim is backed by a purchased source.All claims are supported by purchased sources. The answer is well-grounded.
  5. 5
    finalFinal answer is restricted to paid citation records.x402 Settlement Schemes on Arc, FeeRouter Split Payouts and Receipts, Gateway Nanopayments Primer
  6. 6
    receiptsWrote 3 source payment receipts into the ledger.0xd637636c920403f4d36f4ab3df2cbd24ec03b0c2b49fa0a595ec537474998292

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 core question: explains x402 settlement on Arc, EIP-3009 USDC authorization flow, exact vs. Circle Gateway schemes, and how agent payments settle. Essential primary reference.
Source page0xe1fad72f...b8e015

FeeRouter Split Payouts and Receipts

Receipt Ledger Notes / 0.001600 USDCSeed/demo content / Seed demo content used for public proof flows. / excerpt 0xf73ffb15...f91520Explains on-chain payment routing, split logic, receipt ledgers, and how sub-cent citations accrue and claim—critical for understanding agent payout mechanics on Arc.
Source page0x0f6da8a9...86733d

Gateway Nanopayments Primer

Circle Developer Notes / 0.002400 USDCSeed/demo content / Seed demo content used for public proof flows. / excerpt 0x040ead00...888d00Covers Circle Gateway batching of EIP-3009 authorizations for gasless x402 sub-cent settlement, a key mechanism for agent payments at scale on Arc.
Source page0xd637636c...998292

answer receipts

Payment trail

Payments Protocol Notespayment status: accrued -> claimable on-chain / creator recipient 0x7777...7777ledger 0xe1fad72f...b8e015 / prev 0x764dbfa5...014be1
0.001300Arc tx0xe1fad72f...b8e015
Receipt Ledger Notespayment status: accrued -> claimable on-chain / creator recipient 0x8888...8888ledger 0x0f6da8a9...86733d / prev 0xe1fad72f...b8e015
0.001600Arc tx0x0f6da8a9...86733d
Circle Developer Notespayment status: refunded / creator recipient 0x2222...2222ledger 0xd637636c...998292 / prev 0x0f6da8a9...86733d
0.0024000xd637636c...998292