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Quote Verifier — agent-tools-7936.onrender.com
x402
Quote Verifier — agent-tools-7936.onrender.com is a paid API for AI agents from agent-tools-7936.onrender.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-10).
Checks whether a specific claim or quoted statistic is supported by the text at a given source URL or PDF.
Price / call$0.005
Success—
StatusUnknown
How this service works
Primary-source tools for AI agents: verify before you pay, cite, or repeat.
Output
A JSON object with a 'verdict' field (e.g. SUPPORTED or NOT SUPPORTED) and a 'best_matches' array listing the actual sentences from the source page that most closely match the claim, along with any numbers from those sentences that matched the claim.
Example use cases
Fact-check stat before citing
“Before I include this in my newsletter, can you verify that the claim 'remote workers are 13% more productive than office workers' actually appears in https://nber.org/papers/w18871? I don't want to misquote it.”
Audit AI-generated content
“My AI assistant just told me '40% of consumers abandon a purchase after a bad customer service experience' citing https://salesforce.com/research/customer-expectations — can you check if that number is really on that page before I repeat it in my presentation?”
Validate PDF report statistic
“I have a PDF at https://reports.example.com/annual2024.pdf and someone claims it says 'global EV adoption grew by 65% year-over-year in 2023' — can you verify if that statement is actually supported by the document?”
Technical details
Endpoint
GEThttps://agent-tools-7936.onrender.com/verify/quote?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent needs to ground-truth a specific claim, statistic, or quote against a primary source URL or PDF before acting on it, citing it, or paying for content. Ideal for research pipelines, content audits, citation checkers, and anti-hallucination workflows where the exact source document is known.
Side effects
- Source URL is inaccessible, paywalled, or returns an error — endpoint may return an unsupported verdict or an error
- PDF is malformed or not parseable — extraction may fail
- Claim is too vague or paraphrased — may return NOT SUPPORTED even if a related statement exists
- Source page content has changed since the claim was made — verdict reflects current page content only
- Very long PDFs may result in timeout or incomplete coverage
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"verdict": "SUPPORTED",
"best_matches": [
{
"sentence": "...20% now land their first paying customer within 30 days...",
"numbers_matched": [
"20",
"30"
]
}
]
}
}Tags
x402
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