{"uid":"cap_sff3Ao8vJqnGQ8RfAkDJ0","slug":"verity-suite-citation-fact-check-endpoint-fbd83c7d","name":"Verity Suite Citation & Fact-Check Endpoint","description":"The trust fabric for AI agents — calibrated, fail-closed services agents pay per call.","url":"https://verity-suite.onrender.com/cite","method":"POST","headers":{},"bodySchema":{"type":"object","required":["statement"],"properties":{"statement":{"type":"string","description":"the factual claim to find supporting sources for"},"domain_hint":{"type":"string","description":"optional topic/field to focus the search (e.g. 'clinical', 'tax law')"}}},"responseSchema":{"type":"object","title":"citation_out","required":["verdict","support","citations","reasons"],"properties":{"caveats":{"type":"array","items":{"type":"string"},"title":"Caveats","description":"scope limits, partial coverage, conflicting evidence, or recency/quality concerns the caller should know"},"reasons":{"type":"array","items":{"type":"string"},"title":"Reasons","description":"concrete grounds for the verdict, including why any candidate sources were rejected (off-topic, unverifiable, low-quality, vague, contradicts)"},"support":{"type":"number","title":"Support","maximum":1,"minimum":0,"description":"calibrated 0..1: how strongly the retrieved sources actually establish the statement (0=none retrieved or contradicted, ~0.3-0.7=partial, 0.8-1.0=explicit and on-point)"},"verdict":{"enum":["supported","partially_supported","no_sources_found","contradicted"],"type":"string","title":"Verdict","description":"whether real retrieved sources actually support the statement; no_sources_found is the safe/uncertain value"},"citations":{"type":"array","items":{"type":"string"},"title":"Citations","description":"only sources actually retrieved this call and verified to bear on the statement; each entry = source identifier/title + what specifically it supports. Empty if none qualify."}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.25","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$0.25/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.25","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.25","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_ALm4CXkA8xpk-j0s8ZmtX","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.25","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Searches for and returns calibrated citations that support or contradict a factual claim, returning a verdict, support score, and source list","exampleAgentPrompt":"Can you check whether the claim 'mRNA vaccines have been shown to reduce COVID-19 hospitalization rates by over 90%' is actually supported by real sources? Focus the search on clinical evidence.","exampleUseCases":null,"resultDescription":"Returns a verdict enum (supported, partially_supported, no_sources_found, or contradicted), a calibrated support score from 0 to 1, a list of specific citations retrieved that bear on the statement, concrete reasons for the verdict, and optional caveats about scope limits, conflicting evidence, or recency concerns.","failureModes":["No supporting sources found — returns verdict 'no_sources_found' with empty citations and support score near 0","Claim is contradicted by retrieved sources — returns verdict 'contradicted' with reasons explaining the contradiction","Ambiguous or overly broad statement returns 'partially_supported' with low support score and caveats","Domain hint does not narrow results effectively, returning off-topic or low-quality sources that are rejected","Payment not processed — call rejected before execution"],"whenToPreferThis":"Use this endpoint when an AI agent needs to back a specific factual claim with real, retrieved citations before presenting it to a user, publishing content, or making a decision — especially when a calibrated support score and explicit rejection reasoning are required. Prefer this over generic web search when you need a structured, fail-closed verdict with traceable sources rather than raw search results.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:35:21.357Z","isFirstParty":false}