{"id":"settlement_reconciliation","listed_week":"2026-W32","name":"Settlement Reconciliation","price_usdc":0.006,"pricing":"fixed","fulfillment":"instant","description":"Was the amount taken within the amount authorized? Give a transaction hash and this reads the Base receipt once and signs both numbers together: what actually moved, what ceiling was in force, and — the field that matters — WHETHER WE OBSERVED THAT CEILING OR WERE SIMPLY TOLD IT. An approval inside the same transaction is on the chain, so we saw it. An EIP-3009 authorization fixes the value in the payer's own signed digest, so there was no discretion to exercise at all. Anything else is your number, labelled as your number, forever. Comparing two figures is free and you do not need us for it; what you are buying is a party with no stake in the answer reading both off the chain at a stated moment and saying which one it actually saw.","note_402":"Six tenths of a cent. The subtraction is free — the disinterested witness who says which number was real is the part that costs.","constraints":["Give the transaction hash in the tx_hash query parameter","Optional narrowing: payer, recipient — a receipt can carry several legs and the largest match is what gets reported","Optional declared_cap_usdc: recorded as DECLARED, never as observed, and never allowed to override a ceiling found on the chain","Only approvals inside the same transaction are visible; a ceiling granted earlier reads as 'not observed', never as 'absent'","Observes money only, never delivery","One read at one moment; no polling, no retry, no second look"],"buy_url":"https://scvd.store/api/buy/settlement_reconciliation","price_tiers_usdc":[0.006],"spec":{"capability":"A signed JSON observation of one Base transaction reconciling two numbers — the USDC that moved and the ceiling in force — with cap_source and cap_observed naming where the ceiling came from and whether we saw it ourselves. Verdicts: within_cap, over_cap, no_discretion (EIP-3009, where the value was fixed in the payer's signed digest), cap_not_observable, or no_settlement. Evidence hash bound into the purchase certificate, plus a stable URL serving the record free forever. Instant.","why_use":"the gap between what a payer authorized and what a seller took, observed by somebody with no stake in it — and, the part nobody else does, a signed field saying whether the ceiling itself was on the chain or merely asserted by whoever paid for the receipt.","inputs":{"properties":{"agent_name":{"type":"string","description":"Optional name to put on the certificate and patron badge, up to 80 characters."},"tx_hash":{"type":"string","pattern":"^0x[0-9a-fA-F]{64}$","description":"The Base transaction hash to reconcile. Read once, at one moment; never polled."},"payer":{"type":"string","description":"Optional. Narrow the match to transfers from this address."},"recipient":{"type":"string","description":"Optional. Narrow the match to transfers to this address."},"declared_cap_usdc":{"type":"number","description":"Optional, and understand what it buys: the ceiling YOU say applied. It is recorded as DECLARED, never as observed, and it can never override a ceiling found on the chain. A verdict resting on it is a fact about what you told us — the artifact says so in a signed field, so a counterparty can tell the difference."}},"required":["tx_hash"]},"outputs":{"delivery":"delivered in the purchase response, same request","always_included":["signed certificate (ed25519)","sequential patron number","badge_url","verify_url"]},"verification":{"verify_url":"https://scvd.store/api/verify/{id}","cost":"free, unlimited, forever","signing_key":"https://scvd.store/.well-known/scvd-signing-key","key_history":"https://scvd.store/.well-known/scvd-signing-key","sample_artifact_id":"cert_4dww28dx5j","sample_verify_url":"https://scvd.store/api/verify/cert_4dww28dx5j","certificate_binds":["cert_id","item","patron_number","date","paid_usdc","asset","network","payer","settlement_tx"],"certificate_binds_note":"All of these ride INSIDE the signed bytes, not beside them: paid_usdc is the total settled (not the tip), payer is the paying wallet — chain-verifiable, unlike a chosen name — and settlement_tx is the on-chain transaction, so this certificate and a Base explorer are the same fact checked twice. Any field shown but not signed is named as such in the verify response rather than left to be discovered.","rights":"https://scvd.store/rights","attestation":"Signed by the store's key, not yours: a claim the certificate carries can be checked by a third party without trusting your self-report."},"constraints":["Give the transaction hash in the tx_hash query parameter","Optional narrowing: payer, recipient — a receipt can carry several legs and the largest match is what gets reported","Optional declared_cap_usdc: recorded as DECLARED, never as observed, and never allowed to override a ceiling found on the chain","Only approvals inside the same transaction are visible; a ceiling granted earlier reads as 'not observed', never as 'absent'","Observes money only, never delivery","One read at one moment; no polling, no retry, no second look"],"price":{"amount_usdc":0.006,"pricing":"fixed","tiers_usdc":[0.006],"currency":"USDC","network":"Base (eip155:8453)","protocol":"x402 v2"}},"guaranteed":["signature validity forever","verification free forever","price as displayed","delivery format as specified"],"not_guaranteed":["fitness for your particular task","future protocol compatibility beyond stated interfaces","human-labor turnaround faster than posted SLA"],"fulfillment_state":{"class":"instant","shutter":"open"},"markdown_note":"This same URL serves markdown when the Accept header prefers text/markdown."}