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Verdicts Freshness Attestation
x402
Verdicts Freshness Attestation is a paid API for AI agents from verdictmcp.com, paid per call via x402, $0.12/call, status unknown (last checked 2026-09-13).
Checks whether a cited claim and its source URL are still current and returns a machine-readable freshness verdict with reproduction class.
Price / call$0.12
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 (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.
Example use cases
Research citation freshness check
“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?”
Agent fact-checking pipeline
“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.”
Automated content audit
“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?”
Technical details
Endpoint
POSThttps://verdictmcp.com/verdict/freshness/attestWhen to prefer
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.
Side effects
- 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
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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