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SourceMint Citation Auditor
x402
SourceMint Citation Auditor is a paid API for AI agents from sourcemint-api.nap6281.chatgpt.site, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).
Verifies claims in an answer or report against a set of provided source URLs, returning per-claim support verdicts, source coverage, and a tamper-evident bundle hash.
Price / call$0.05
Success—
StatusUnknown
How this service works
Wallet-native x402 APIs for web extraction, claim verification, and citation auditing.
Output
Returns a JSON object containing: a proof bundle with a SHA-256 hash for tamper-evidence; an array of individual claim verdicts (supported/unsupported/partial); an array of source objects with extracted content; and a summary with total claim count, number supported, number unsupported, number partial, and a 0–1 coverage score.
Example use cases
AI report citation integrity check
“I just generated a report summarizing our competitor analysis and it cites five URLs. Can you audit it to confirm which claims are actually backed by those sources and give me a coverage score? Here's the text and the URLs.”
Student essay reference verification
“My essay makes four factual claims about climate change and cites three academic articles. Can you check which of my claims are actually supported by those articles and flag any that aren't? I'll paste the essay text and the article URLs.”
Journalist source audit before publishing
“Before I publish this article, can you verify that every factual claim I've made is supported by the news sources I've linked? I want a breakdown of supported vs unsupported claims and a proof hash I can save for the record.”
Technical details
Endpoint
POSThttps://sourcemint-api.nap6281.chatgpt.site/api/audit-citationsWhen to prefer
Choose this endpoint when you need to verify whether specific textual claims are actually backed by cited web sources — especially for AI-generated outputs, research summaries, journalism, or student work where citation integrity matters. It is distinct from general web search or fact-checking APIs because it operates on a provided answer-plus-URLs pair, returns per-claim verdicts, and produces a cryptographic proof bundle. Prefer it over generic scraping tools when you need structured claim-level attribution and auditability rather than raw page content.
Side effects
- Cited URL is paywalled or returns a non-200 HTTP status — source will be marked unresolvable and claims against it may be unsupported
- Answer contains no verifiable factual claims — claims array returns empty
- URL array is empty — no source evidence can be checked, all claims unsupported
- Network timeout fetching a slow source page — partial coverage returned
- Payment not received or x402 handshake fails — request rejected before processing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| urlsrequired | array | Public URLs cited by the answer |
| answerrequired | string | Answer or report whose claims should be checked |
Output
Schema · Response
{
"type": "json",
"example": {
"proof": {
"bundleSha256": "0000000000000000000000000000000000000000000000000000000000000000"
},
"claims": [],
"sources": [],
"summary": {
"claims": 4,
"partial": 0,
"coverage": 0.75,
"supported": 3,
"unsupported": 1
}
}
}Tags
x402
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