{"uid":"cap_9S29_z_-oKiAt_0-pqQDC","slug":"capi2-agent-commerce-claim-verifier-a74863de","name":"CAPI2 Agent Commerce Claim Verifier","description":"Programmable authority checks and tamper-evident receipts for autonomous agents, sold through sustainable x402 commerce.","url":"https://capi2-agent-commerce.vandurmedries.workers.dev/v1/claim-verify","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"claim":{"type":"string","maxLength":1200,"minLength":3},"vendor_url":{"type":"string","format":"uri"},"source_urls":{"type":"array","items":{"type":"string","format":"uri"},"maxItems":3}}},"responseSchema":{"type":"json","example":{"confidence":0.88,"verification_status":"supported","evidence_source_urls":["https://example.com/security"]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.1","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":"$0.1/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_YwIecRaEp3bY2hrD21efP","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.1","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Verifies a sustainability or commerce claim against provided evidence URLs and returns a confidence score with verification status and supporting sources.","exampleAgentPrompt":"Can you verify the claim 'Our packaging is 100% recycled materials' made by EcoVend at https://ecovend.com, using these two sources as evidence: https://ecovend.com/materials-report and https://thirdparty-audit.org/ecovend-2024?","exampleUseCases":[{"title":"ESG supplier due diligence","prompt":"I need to verify the claim 'We source only Rainforest Alliance certified cocoa' from vendor CocoaEthics at https://cocoaethics.com — can you check it against these sources: https://rainforest-alliance.org/members/cocoaethics and https://cocoaethics.com/certifications and tell me how confident we should be?"},{"title":"Marketplace listing fact-check","prompt":"Before I approve this seller listing, can you verify their claim 'All electronics are carbon-neutral certified' from https://greengadgets.io using https://greengadgets.io/carbon-cert and https://carbontrust.com/greengadgets as evidence sources?"},{"title":"Sustainable brand audit","prompt":"Can you check whether the claim 'Zero single-use plastics in all product lines' from the brand NaturaPack at https://naturapack.com holds up, using https://naturapack.com/sustainability-report and https://epa.gov/naturapack-audit as supporting sources?"}],"resultDescription":"A JSON object containing a confidence score (0–1 float), a verification_status string (e.g. 'supported', 'unsupported', 'uncertain'), and an array of evidence_source_urls that substantiate the verification result.","failureModes":["Claim text too short (below 3 characters) or too long (above 1200 characters) returns a 400 validation error","Invalid or unreachable vendor_url returns an error or lowers confidence","Source URLs that are inaccessible or irrelevant may result in low confidence score","More than 3 source URLs provided returns a 400 validation error","Payment of 0.1 USDC not completed via x402 protocol results in a 402 Payment Required response","Malformed URI in vendor_url or source_urls returns schema validation error"],"whenToPreferThis":"Choose this endpoint when you need a machine-verifiable, evidence-backed assessment of a sustainability or commerce claim from a specific vendor, especially when you want a confidence score and traceable evidence URLs rather than a simple yes/no. It is particularly suited for agent workflows requiring receipts or audit trails for ESG, green, or product claims before publishing, approving, or transacting.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:35:31.498Z","isFirstParty":false}