# NumberIntel Trust Verdict

> NumberIntel Trust Verdict is a paid API for AI agents from numberintel.dev, paid per call via x402, $1/call, status unknown (last checked 2026-10-19).

Returns a single risk verdict for a contact by analyzing a phone number, email address, and/or website for fraud signals from public data

## Facts

- Endpoint: GET https://numberintel.dev/v1/trust?utm_source=zero.xyz
- Price: $1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/numberintel-trust-verdict-77c506cd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TMJHz3oEJoFuXfYt41sxR

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability numberintel-trust-verdict-77c506cd
```

Example prompt: Can you do a trust check on this new supplier who contacted me — their phone is +14155552671, email is offers@quickdeal-promo.net, and their website is quickdeal-promo.net? I want to know if any of those look shady before I respond.

## When to prefer this

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.

## Known failure modes

- 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

## 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.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "email": {
       "type": "string",
       "description": "Email address (optional)"
      },
      "phone": {
       "type": "string",
       "description": "Phone number (optional)"
      },
      "website": {
       "type": "string",
       "description": "Website URL or domain (optional)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/numberintel-trust-verdict-77c506cd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from numberintel.dev](https://www.zero.xyz/host/numberintel.dev/llms.txt)