# Factline Domain Risk & Verification Check

> Factline Domain Risk & Verification Check is a paid API for AI agents from factline.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-10).

Checks a domain, URL, or email address for RDAP registration data, DNS email setup, disposable-email detection, and a low/medium/high fraud risk score with human-readable flags.

## Facts

- Endpoint: GET https://factline.dev/v1/domain/check?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/factline-domain-risk-verification-check-d3d7fb0c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bRSy-3EBLgUYqjYCmzXYL

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 factline-domain-risk-verification-check-d3d7fb0c
```

Example prompt: Can you check whether shopfast-deals.shop looks legitimate — I want to know how old the domain is, who registered it, and whether it's flagged as high-risk before I proceed with this order?

## When to prefer this

Use this endpoint when you need a fast, all-in-one domain risk assessment combining registration age, RDAP metadata, email security configuration, and fraud scoring — particularly in onboarding, KYB, or payment fraud workflows where newly registered or disposable-email domains are a key risk signal. Prefer it over manual WHOIS or individual DNS lookups when you need a structured risk verdict with flags rather than raw data.

## Known failure modes

- Invalid or malformed domain/URL/email input returns an error
- Unregistered or non-existent domain may return no RDAP data
- RDAP registry may be unavailable for some TLDs, resulting in partial data
- DNS lookup timeouts for MX/SPF/DMARC records
- Rate limiting if called excessively without valid payment

## How this service works

API and MCP servers that let AI agents and apps check people, companies, Dutch addresses and cars against official records: sanctions and PEP lists, 10 company registers, Dutch property, rent and RDW vehicle data. From $0.001 per call.

## Output

Returns RDAP registration data (registered date, domain age, expiry, registrar, status, nameservers), DNS email configuration (MX, SPF, DMARC records), a disposable-email indicator, an overall risk level (low/medium/high), and human-readable risk flags such as 'registered 4 days ago' or 'no DMARC record'.

## 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",
     "required": [
      "domain"
     ],
     "properties": {
      "domain": {
       "type": "string",
       "description": "Domain, website URL or email address, e.g. example.nl"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "risk": "low",
  "email": {
   "mx": [
    "smtp.google.com"
   ],
   "spf": true,
   "disposable": false,
   "accepts_mail": true,
   "dmarc_policy": "reject"
  },
  "flags": [],
  "domain": "google.com",
  "source": "RDAP (registry registration data, servers per IANA bootstrap); DNS via Cloudflare 1.1.1.1; disposable-email-domains (CC0)",
  "explain": {
   "risk": "high: does not exist, registered under 30 days ago or a disposable-mail domain; medium: under 6 months old or several setup gaps; low: established and properly set up. A young domain is a common sign of scam shops and phishing, not proof."
  },
  "registration": {
   "status": [
    "client delete prohibited",
    "client transfer prohibited",
    "client update prohibited",
    "server delete prohibited",
    "server transfer prohibited",
    "server update prohibited"
   ],
   "expires": "2028-09-14",
   "age_days": 10616,
   "registrar": "MarkMonitor Inc.",
   "registered": "1997-09-15",
   "nameservers": [
    "ns1.google.com",
    "ns2.google.com",
    "ns3.google.com",
    "ns4.google.com"
   ],
   "last_changed": "2019-09-09",
   "days_until_expiry": 706
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/factline-domain-risk-verification-check-d3d7fb0c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from factline.dev](https://www.zero.xyz/host/factline.dev/llms.txt)