ToolVet
80trust / 100

Email Check

by FiatDock in Email & messaging

x402 APIPassing, checked 3 h ago

Is this email address worth sending to? Syntax, domain DNS (MX, then A/AAAA), disposable/role/free-provider lists, a typo suggestion (gmial.com -> gmail.com), a normalized form and a risk verdict with reasons. No SMTP probe: it vouches for the domain, never the mailbox. An invalid address is a paid verdict; a DNS failure is 502, not charged. Pay-per-call via x402. An empty body is answered for the published example address ([email protected]); send {"email":"…"} for any other address.

GET https://fiatdock.com/v1/email/check

Last 30 days

All checks passedSome failedAll failedNot checked
Uptime
100%
Response time
41 ms typical, 41 ms slowest 5%
Last check
3 h ago
Next check
any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X GET "https://fiatdock.com/v1/email/check?email=name%40example.com"
import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client().register(
  "eip155:8453",
  new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? Preflight it first for $0.03:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Ffiatdock.com%2Fv1%2Femail%2Fcheck
const res = await pay("https://fiatdock.com/v1/email/check?email=name%40example.com");
console.log(await res.json());

Example input

{
  "email": "[email protected]"
}

Example output

{
  "checkedAt": "2026-09-21T00:00:00.000Z",
  "deliverableDomain": true,
  "domain": "example.com",
  "domainExists": true,
  "email": "[email protected]",
  "hasA": true,
  "hasMx": false,
  "isDisposable": false,
  "isFreeProvider": false,
  "isRole": false,
  "local": "name",
  "method": "syntax + DNS (MX, then A/AAAA) + disposable/role/free-provider lists + a typo map; no SMTP probe",
  "mx": [],
  "normalized": "[email protected]",
  "reasons": [
    "no_mx_record"
  ],
  "risk": "low",
  "suggestion": null,
  "syntaxValid": true
}

Security scan

  • No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
3 h agoPassed40241 ms$0.001