{"uid":"cap_eTmJnoh1Qo5-RMdcYXMlB","slug":"capi2-claim-verify-337207df","name":"capi2 Claim Verify","description":"Agent-native evidence-backed claim verification with x402 micropayments on Base USDC.","url":"https://capi2-claim-verify.onrender.com/v1/claim-verify","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"claim":{"type":"string","maxLength":1200,"minLength":3,"description":"Vendor, product, compliance, security, or commercial claim to verify."},"claim_id":{"type":"string","maxLength":200},"vendor_url":{"type":"string","format":"uri","description":"Public source URL containing evidence relevant to the claim."},"source_urls":{"type":"array","items":{"type":"string","format":"uri"},"maxItems":3,"minItems":1,"description":"Optional list of up to three public evidence URLs. These are checked together; vendor_url remains supported for backward compatibility.","uniqueItems":true},"vendor_name":{"type":"string","maxLength":200},"request_type":{"type":"string","maxLength":120},"verification_type":{"type":"string","maxLength":120}}},"responseSchema":{"type":"json","example":{"claim":"Vendor states that customer data is encrypted at rest.","caveats":["Checks only the supplied public URL."],"verdict":"SUPPORTED_BY_SUPPLIED_SOURCE","evidence":[{"text":"Customer data is encrypted at rest.","score":0.9,"source_url":"https://example.com/security"}],"protocol":"capi2.claim_verify/1.6.1","checked_at":"2026-08-26T15:00:00Z","confidence":0.88,"request_id":"cv_018f5f8f0c2b4f7a","vendor_url":"https://example.com/security","source_results":[{"status":"checked","final_url":"https://example.com/security","requested_url":"https://example.com/security"}],"sources_checked":1,"evidence_summary":"Customer data is encrypted at rest.","verification_result":"supported","verification_status":"supported","evidence_source_urls":["https://example.com/security"]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_mqzyM0wrKG-tYeDAygyyh","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Verifies a public vendor, product, security, compliance, or commercial claim against a supplied URL and returns a machine-readable verdict, evidence, and confidence score.","exampleAgentPrompt":"Can you verify this claim for me — 'Acme Corp is SOC 2 Type II certified' — using their public trust page at https://trust.acmecorp.com and tell me if it checks out with a confidence score?","exampleUseCases":[{"title":"Security certification due diligence","prompt":"Verify the claim that 'CloudBase is ISO 27001 certified' using their security page at https://cloudbase.io/security — I need a machine-readable verdict and evidence before we finalize the procurement."},{"title":"SaaS product feature validation","prompt":"Check whether the claim 'DataFlow supports real-time streaming with sub-100ms latency' holds up against what's published at https://dataflow.io/features and give me your confidence level."},{"title":"Compliance claim check for vendor onboarding","prompt":"I need to verify that Stripe is GDPR compliant — can you check that claim against https://stripe.com/privacy and return a structured verdict with supporting evidence?"}],"resultDescription":"A machine-readable JSON response containing a verdict (e.g. supported, unsupported, uncertain), extracted evidence from the supplied URL, and a confidence score — designed for autonomous agent workflows to consume programmatically.","failureModes":["Supplied URL is inaccessible or returns an error — claim cannot be verified against the source","Claim text is too vague or too long (outside 3–1200 character limit)","URL does not contain relevant information to assess the claim — low-confidence or uncertain verdict returned","Network timeout or service unavailability from the render.com host","Claim is about private or paywalled content that cannot be publicly fetched"],"whenToPreferThis":"Use this endpoint when an autonomous agent needs to programmatically verify a specific factual claim about a vendor, product, security posture, or compliance status against a public URL — especially in procurement, vendor onboarding, or due diligence workflows where machine-readable verdicts and confidence scores are required. Prefer this over general web search when you already have a specific claim and a candidate evidence URL and need a structured pass/fail result with supporting evidence.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:37:06.931Z","isFirstParty":false}