{"uid":"cap_UBtQB3EV7h4aLUj4VWcEy","slug":"agoranome-fair-offer-certify-b7c1f3a2","name":"Agoranome Fair Offer Certify","description":"Fair Offer certification for an x402 API: every claim in your 402's fair-offer block checked against live behaviour. Your public receipts are reconciled against Base, your free sample is attested, the block is checked against the 0.2 schema and across two requests, and the listing price against the Bazaar. Pass or fail, the signed result is published at a public URL.","url":"https://api.agoranome.com/v1/fair-offer/certify?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"url":{"type":"string","description":"Your paid endpoint's public https URL"}}},"responseSchema":{"type":"json","example":{"result":{"url":"https://.../v1/fair-offer/certifications/cert_...","verdict":"pass","failures":[],"certification_id":"cert_<24 hex>"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"1","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$1/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"1","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"1","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_x1tj5QbU69D60iBovsjCp","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"1","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Certifies an x402 API's fair-offer block by checking all claims against live behaviour, reconciling receipts on Base, attesting the free sample, validating the schema, and publishing a signed pass/fail result at a public URL.","exampleAgentPrompt":"Run a Fair Offer certification on my x402 API at https://api.myservice.com/v1/data and publish the signed result so buyer agents can see whether it passes.","exampleUseCases":[{"title":"Pre-launch compliance check","prompt":"Before I list my new x402 API on the Bazaar, certify https://api.mytools.com/v1/search and tell me if it passes the fair-offer checks or what it's failing on."},{"title":"Rebuilding buyer trust after complaints","prompt":"Some buyer agents have said my API at https://api.dataco.com/v1/prices isn't delivering what the 402 block promises — can you run a Fair Offer certification and get me a public signed result I can share?"},{"title":"Routine compliance audit for live API","prompt":"Certify the fair-offer block on https://api.analyticsco.com/v1/report against live behaviour and publish the certificate so I can link to it from my docs."}],"resultDescription":"A JSON object containing a public URL where the signed certification is hosted, a verdict of 'pass' or 'fail', an array of specific failures (empty on pass), and a unique certification_id (cert_ followed by 24 hex characters).","failureModes":["Endpoint URL is unreachable or returns non-HTTPS responses — certification cannot proceed","x402 fair-offer block is malformed or missing — schema validation fails with specific error details","Live behaviour does not match declared claims — verdict is 'fail' with itemised failures array","On-chain receipts on Base cannot be reconciled — receipt attestation step fails","Bazaar listing price does not match declared price — pricing mismatch failure returned","Free sample attestation fails if the sample endpoint returns errors or inconsistent output"],"whenToPreferThis":"Choose this endpoint when you need a tamper-evident, signed, publicly accessible certification that an x402 API's fair-offer block accurately reflects its real behaviour — covering schema compliance, on-chain receipt reconciliation, free-sample attestation, and Bazaar price alignment in a single call. Prefer it over manual inspection or partial linting tools when you need a definitive pass/fail verdict with a public URL suitable for sharing with buyer agents or listing directories.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-30T12:32:35.276Z","isFirstParty":false,"canonicalSlug":"agoranome-fair-offer-certify-b7c1f3a2"}