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Verdicts Freshness Deep Check
x402
Verdicts Freshness Deep Check is a paid API for AI agents from verdictmcp.com, paid per call via x402, $0.04/call, status unknown (last checked 2026-09-13).
Performs a deep attestation verdict on whether a given citation/claim and its source URL is still current and factually fresh.
Price / call$0.04
Success—
StatusUnknown
How this service works
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.
Output
Returns a JSON object with: ok (boolean success flag), type ('freshness'), verdict (e.g. 'current' or 'stale'), and reproduction_class (integer indicating how reproducible/verifiable the claim is against the source). Indicates whether the claim is still supported by the source URL at time of check.
Example use cases
Research paper citation audit
“I need you to verify whether this claim is still supported by its source — 'Global average temperature has risen by 1.1°C since pre-industrial times' — check against https://climate.nasa.gov/vital-signs/global-temperature/ and tell me if it's current.”
AI agent knowledge base freshness
“Before my agent publishes this answer, deep-check if the claim 'The FDA approved Paxlovid for COVID-19 treatment in 2021' is still accurate according to https://www.fda.gov/drugs/drug-safety-and-availability/fda-approves-first-oral-antiviral-treatment-covid-19-adults — is this citation fresh?”
Journalism fact verification
“Can you run a deep freshness verdict on this statement — 'Twitter was rebranded to X in July 2023' — sourced from https://techcrunch.com/2023/07/23/twitter-rebrand-x/ and let me know the reproduction class and whether it's still current?”
Technical details
Endpoint
POSThttps://verdictmcp.com/verdict/freshness/deepWhen to prefer
Choose this endpoint when you need a deep, paid-attestation freshness check on a specific claim-URL pair — not just a link-alive ping. Prefer over generic link checkers when you need a structured verdict and reproduction class score, especially in agentic pipelines requiring traceable citation validation. Use when citation accuracy and recency matter more than speed or cost.
Side effects
- Source URL is unreachable or returns non-200 — verdict may be indeterminate
- Claim is too vague or ambiguous for comparison against source content
- Source URL has paywalled or bot-blocked content preventing deep access
- Payment of $0.04 USDC via x402 not completed — request rejected with 402
- Malformed input schema (missing claim or source_url) returns validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| claim | string | |
| source_url | string |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"type": "freshness",
"verdict": "current",
"reproduction_class": 1
}
}Tags
x402
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