{"uid":"cap_GX-m3PYN714u2ypaj1Tb3","slug":"capi2-claim-verify-32828f78","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/vendor-security-check","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_Xd2YjmMV0ONSj2Yu77ope","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 vendor, product, security, or compliance claims against supplied public evidence URLs and returns a structured verdict with confidence score.","exampleAgentPrompt":"Can you verify the claim 'Acme Corp encrypts all customer data at rest and in transit' using their security page at https://acmecorp.com/security as evidence?","exampleUseCases":[{"title":"Third-party vendor security due diligence","prompt":"Before we onboard DataFlow Inc., can you verify their claim that 'all data is encrypted at rest using AES-256' — their security overview is at https://dataflow.io/security?"},{"title":"Compliance claim check for procurement","prompt":"Our procurement team needs to confirm that CloudStore's claim of being SOC 2 Type II certified is actually supported by their public compliance page at https://cloudstore.com/compliance. Can you check that?"},{"title":"Supplier self-certification validation","prompt":"A supplier says 'we never share customer data with third parties for advertising purposes' — can you verify that against their privacy policy at https://supplier.example.com/privacy?"}],"resultDescription":"Returns a JSON object containing a verdict label (e.g. SUPPORTED_BY_SUPPLIED_SOURCE, NOT_SUPPORTED), a numeric confidence score (0–1), an array of evidence excerpts with individual scores and source URLs, an evidence summary, caveats about the check's scope, the number of sources checked, a request ID, protocol version, and the timestamp of the check.","failureModes":["Supplied URLs are inaccessible or return non-200 responses — source_results will show failed status","Claim text is too short (under 3 characters) or too long (over 1200 characters) — returns 400 validation error","Evidence found on the page is ambiguous or contradicts the claim — verdict may be NOT_SUPPORTED or UNCERTAIN","Payment not settled via x402 micropayment — returns 402 Payment Required","Rate limiting or server unavailability on Render.com — returns 5xx error","Source URL content is behind a login wall and cannot be fetched — evidence will be empty"],"whenToPreferThis":"Choose this endpoint when you need agent-native, evidence-backed verification of a specific textual claim against one or more public URLs — particularly for vendor security, compliance, or commercial due diligence scenarios. It is purpose-built for AI agent workflows, returns structured machine-readable verdicts with confidence scores, and charges only $0.01 USDC per call via x402 micropayments, making it cost-effective for high-volume automated checks. Prefer this over generic web scraping when you need a normalized verdict and evidence citations rather than raw page content.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:39:39.654Z","isFirstParty":false}