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AxonGate Claim Verification
x402
AxonGate Claim Verification is a paid API for AI agents from api.axongate.one, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-30).
Fact-checks a single claim against live web sources or supplied URLs, returning a verdict, confidence score, and verbatim supporting/contradicting quotes.
Price / call$0.02
Success—
StatusUnknown
How this service works
Fact-check one claim against live web sources (or URLs you supply). Returns a verdict (supported, refuted, mixed, insufficient), a confidence score and supporting or contradicting quotes that are checked verbatim against the fetched pages. Use it before an agent repeats a claim.
Output
Returns a verdict string (one of: supported, refuted, mixed, insufficient), a confidence score between 0 and 1, and an array of verbatim quotes from the fetched pages that either support or contradict the claim, along with the source URLs they were drawn from.
Example use cases
Verifying a viral statistic before sharing
“Before I repost this, can you fact-check the claim that 'over 90% of plastic ever produced has never been recycled'? Check up to 5 sources and tell me if it's supported, refuted, or mixed, and show me the exact quotes.”
Confirming a quote attribution
“Did Elon Musk actually say 'I think it is possible for ordinary people to choose to be extraordinary'? Fact-check that quote against live web sources and give me a confidence score.”
Validating a claim against specific sources
“I have two URLs I trust — can you check them to see if the claim that 'coffee reduces the risk of type 2 diabetes' is supported or contradicted? Use only those two sources and pull the verbatim evidence.”
Technical details
Endpoint
POSThttps://api.axongate.one/v1/verify?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs to validate a specific factual claim before repeating or publishing it, especially when verbatim evidence and a structured verdict are required. Prefer it over generic web search when you need a binary or graded truth assessment with citation-level proof. It is particularly suited for journalism, research, compliance, and content moderation workflows where accountability for accuracy matters. Use it over a general Q&A endpoint when the goal is verification rather than answering a question.
Side effects
- Claim is too vague or ambiguous for any source to address — verdict returns 'insufficient' with low confidence
- Supplied URLs are inaccessible, paywalled, or return errors — falls back to web search or returns insufficient
- Claim contains multiple sub-claims that conflict — may return 'mixed' even when one part is clearly true
- Live web sources have changed since the claim was made — historical claims may receive incorrect verdicts
- max_sources set to 1 may yield insufficient evidence for a reliable verdict
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| urls | array | Optional source URLs to check against instead of searching (max 5). |
| claim | string | One factual claim to check. |
| max_sources | integer | Sources to read, 1-5 (default 4). |
Tags
x402
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