Freshness / Claim Verifier

Choose this endpoint when you need to ground-truth a specific factual claim against real, recent web evidence — especially when recency matters (e.g., claims about current events, prices, leadership, regulations, or statistics). It is preferable to static knowledge bases or LLM memory when the claim may have changed recently. Use it over general web search when you need a structured verification verdict rather than raw search results. The domain filtering option makes it ideal when you want verification scoped to authoritative or trusted sources only.

• Claim text is too short (under 8 characters) or too long (over 2000 characters) — returns validation error
• freshness_days out of range (below 1 or above 3650) — returns validation error
• No fresh web evidence found within the specified freshness window — returns unverified result
• Preferred domain(s) have no indexed or accessible content — reduced evidence coverage
• Ambiguous or highly contested claims may return low-confidence or inconclusive results
• Payment failure (insufficient USDC balance or x402 protocol error) — returns 402 Payment Required
• Network timeout or upstream search service unavailability — returns 503 or timeout error