{"uid":"cap_iQP5RvRNv5bW_siQJGGVi","slug":"verdicts-freshness-attestation-f5061f32","name":"Verdicts Freshness Attestation","description":"x402-paid attestation verdicts: is this citation still current, and is this domain agent-ready. REST twin of the MCP server at https://verdictmcp.com/mcp.","url":"https://verdictmcp.com/verdict/freshness/attest","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"claim":{"type":"string"},"source_url":{"type":"string"}}},"responseSchema":{"type":"json","example":{"ok":true,"type":"freshness","verdict":"current","reproduction_class":1}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.12","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":"$0.12/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.12","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.12","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_MTnvE5jahS1mBo05XUXGy","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.12","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks whether a cited claim and its source URL are still current and returns a machine-readable freshness verdict with reproduction class.","exampleAgentPrompt":"Can you check if the claim 'OpenAI was founded in 2015' from https://en.wikipedia.org/wiki/OpenAI is still current and give me a freshness attestation?","exampleUseCases":[{"title":"Research citation freshness check","prompt":"I'm writing a report and I cited the claim 'global EV sales surpassed 10 million in 2022' from https://iea.org/reports/global-ev-outlook-2023 — can you verify if that claim is still current and give me a freshness verdict?"},{"title":"Agent fact-checking pipeline","prompt":"Before publishing, check whether the claim 'the US Federal Reserve rate is 5.25%' sourced from https://federalreserve.gov/monetarypolicy/openmarket.htm is still accurate and return the reproduction class so I know how reliable the attestation is."},{"title":"Automated content audit","prompt":"We have a help article that states 'Python 3.9 is the latest stable release' and links to https://python.org/downloads — can you run a freshness check on that claim and tell me if it's still current or has gone stale?"}],"resultDescription":"Returns a JSON object with: ok (boolean success flag), type (attestation type, e.g. 'freshness'), verdict (e.g. 'current' or 'stale'), and reproduction_class (integer indicating how reproducible/verifiable the claim is). This lets agents programmatically determine if a cited claim remains valid and how strongly it can be attested.","failureModes":["Source URL is unreachable or returns non-200 — verdict may reflect inability to verify rather than staleness","Claim text is ambiguous or too short to match against source content — low reproduction_class returned","Paywalled or bot-blocked source URLs cannot be fetched — ok may be false","Rate limiting or payment failure (x402) causes request rejection","Source URL redirects or has moved — may affect accuracy of the freshness verdict"],"whenToPreferThis":"Choose this endpoint when you need a paid, authoritative attestation of whether a specific textual claim tied to a source URL is still current — particularly for AI agents that need machine-readable verdicts with reproduction class scoring for downstream fact-checking pipelines. Prefer this over free heuristics or link-checking tools when you need a structured, standardized verdict (not just a live/dead URL check) and when auditability of the attestation matters.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:30:51.242Z","isFirstParty":false}