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NumberIntel Trust Verdict
x402
NumberIntel Trust Verdict is a paid API for AI agents from numberintel.dev, paid per call via x402, $1/call, status unknown (last checked 2026-10-15).
Returns a single risk verdict for a contact by analyzing a phone number, email address, and/or website for fraud signals from public data
Price / call$1
Success—
StatusUnknown
How this service works
Can I trust this contact? One risk verdict from a phone number, email address and/or website, built from public data: numbers that can't be in service, VoIP numbers, throwaway or mail-less emails, brand-new or parked domains, bad certificates, email/website mismatches.
Output
A single risk verdict combining signals from one or more of: phone number (VoIP, out-of-service, impossible number), email (throwaway/disposable, undeliverable), and website (brand-new domain, parked, bad SSL certificate, mismatch between email domain and website domain). The response indicates overall trustworthiness and identifies which specific red flags were found.
Example use cases
Vetting a new freelance client
“Before I accept this project, can you check if this contact looks legit? Phone is +12125559823, email is mike.johnson@contracthire.biz, and their site is contracthire.biz — flag anything suspicious like a VoIP number, disposable email, or brand-new domain.”
Screening an inbound sales lead
“We got a new lead submission — phone +16505551234, email freeoffer99@mailinator.com, website dealsforless.io. Run a trust check and tell me if anything looks like a throwaway or fraudulent contact before we call them back.”
Checking an e-commerce seller before payment
“I'm about to buy from an online shop and want to make sure it's legit — can you verify their domain trustworthiness and check if their listed email support@shop-deals.store matches the site, and whether the SSL cert looks okay?”
Technical details
Endpoint
GEThttps://numberintel.dev/v1/trust?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a single combined risk verdict across multiple contact dimensions (phone + email + website) rather than querying each individually. Ideal for fraud screening workflows where a contact provides all three identifiers and you want one authoritative trust decision. Prefer this over individual lookup endpoints when the relationship between contact signals (e.g. email domain not matching website) is itself a risk indicator you care about.
Side effects
- No input provided — at least one of phone, email, or website must be supplied
- Invalid phone format — non-E.164 or unparseable number returns an error
- Unresolvable domain — website lookup may fail for completely unreachable domains
- Ambiguous result — some numbers or domains may have inconclusive signals
- Rate limiting or payment failure for the $1 USDC x402 charge
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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