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Verdicts Freshness Check
x402
Verdicts Freshness Check is a paid API for AI agents from verdictmcp.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-16).
Attests whether a cited claim and its source URL are still current and up-to-date, returning a machine-readable freshness verdict.
Price / call$0.01
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 an 'ok' boolean, a 'type' field (e.g. 'freshness'), a 'verdict' string (e.g. 'current' or 'stale'), and a 'reproduction_class' integer indicating how reliably the claim can be reproduced or verified.
Example use cases
Research paper citation validation
“I'm finalizing a research paper and need to verify that this claim is still accurate: 'Global CO2 emissions peaked in 2019 at 36.7 billion tonnes' — the source is https://www.iea.org/reports/global-energy-co2-status-report-2019. Can you check if it's still current?”
Fact-checking before publishing an article
“Before I publish this blog post, can you verify that the claim 'Apple became the first US company to reach a $3 trillion market cap in January 2022' is still valid? The original source is https://www.bbc.com/news/business-59887488.”
AI agent knowledge base hygiene
“We have a knowledge base entry that says 'The US federal minimum wage is $7.25 per hour' sourced from https://www.dol.gov/general/topic/wages/minimumwage — can you run a freshness check to see if that's still the current figure?”
Technical details
Endpoint
POSThttps://verdictmcp.com/verdict/freshnessWhen to prefer
Choose this endpoint when you need a paid, attested freshness verdict for a specific claim-URL pair — especially in agentic pipelines where citation accuracy matters and you want a machine-readable confidence signal (reproduction_class). Prefer over free heuristics when auditability and attestation are important, such as before publishing AI-generated content or auditing a knowledge base.
Side effects
- Source URL is unreachable or returns a non-200 status — verdict may be indeterminate
- Claim text is too vague or ambiguous for the service to match against the source
- Source URL points to paywalled or bot-blocked content — verification may fail
- Network timeout when fetching source content
- Invalid or missing required fields (claim or source_url) result in a 4xx error
- Payment of $0.01 USDC via x402 protocol not completed — request blocked with 402
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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