Domain trust check API: phishing and new-domain flags

$0.01 per call · failed calls are never charged · no account or subscription: pay per call with a card key or USDC

A trust verdict for any domain in one call: high/medium/low trust with named flags for very new registrations, expiry, missing or weak SPF and DMARC, too few nameservers, no web host and non-resolving domains, plus the key facts (registrar, age, nameservers, DNSSEC). Use for lead qualification, phishing and vendor checks, and before an agent sends mail to or trusts a domain. Signals only, not a guarantee. Raw DNS records: domain.

When to use it

Guide: Domain WHOIS and DNS lookup API

Run it free (25 free calls) Buy credits by card (from $1) Example result (JSON)

Try it with your own inputs

Domain name, e.g. cloudflare.com

Uses one of your 25 free calls. Nothing is charged, and a call that fails is not counted.

Inputs

NameTypeDescription
name (required)stringDomain name, e.g. cloudflare.com

Request

Over HTTP, with a card key from /credits:

curl -H "Authorization: Bearer adt_…" "https://tools.funwords.eu/domain-report?name=cloudflare.com"

Or one of your 25 free calls, no key:

curl "https://tools.funwords.eu/domain-report?name=cloudflare.com&trial=1"

Without a key, the same URL answers 402 Payment Required with x402 and MPP terms, so an agent with a wallet pays per call in USDC (Base, Polygon, Arbitrum or Solana over x402; Base or Tempo over MPP) and retries.

Example result

{
  "domain": "cloudflare.com",
  "trust": "high",
  "summary": "high trust: 0 high and 0 medium flag(s). Based on DNS, registration and email-authentication signals only.",
  "flags": [],
  "facts": {
    "exists": true,
    "registrar": "Cloudflare, Inc.",
    "registeredAt": "2009-02-17T22:07:54Z",
    "expiresAt": "2033-02-17T22:07:54Z",
    "ageDays": 6447,
    "nameservers": [
      "ns3.cloudflare.com",
      "ns4.cloudflare.com"
    ],
    "acceptsMail": true,
    "spfPolicy": "-all",
    "dmarcPolicy": "reject",
    "dnssecValidated": true
  },
  "checkedAt": "2026-10-14T19:25:28.425Z"
}

From an AI agent (MCP)

Add the MCP server to Claude, Cursor or any MCP client. This tool is domain_report, and the first 25 successful calls are free:

https://tools.funwords.eu/mcp

Questions

Is the verdict a guarantee?

No. It lists named signals such as new registration or missing DMARC; it is not a guarantee.

How do I pay?

Each successful call costs $0.01; failed calls are not charged. The first 25 calls are free. Then pay with card credits (from $1; the key goes in an Authorization header or, for clients that can only fetch a URL, as api_key= in the URL) or per call in USDC over x402 or MPP. No account is needed.

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