ToolVet
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Email Validate

by Email Validator in Email & messaging

x402 APIPassing, checked 27 min ago

Validate email addresses: RFC-style syntax checks, IDN domain normalization, live MX lookups with A/AAAA fallback (DNS-over-HTTPS), disposable-domain detection, role-address detection (info@, support@), free-provider flagging, and typo suggestions for popular providers (gmial.com -> gmail.com). Single address or batches up to 50. POST a JSON body like: {"emails":["[email protected]","[email protected]","[email protected]"]}

POST https://keyronne.com/api/email-validate

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Status and outage history · Atom feed

Uptime
100%
Response time
202 ms typical, 322 ms slowest 5%
Last check
27 min ago
Next check
in 5 min

How to call it

POST https://keyronne.com/api/email-validate

Each call costs $0.003 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

POST https://keyronne.com/api/email-validate
content-type: application/json

{
  "emails": [
    "[email protected]",
    "[email protected]",
    "[email protected]"
  ]
}

Parameters

ParameterTypeRequiredDescription
emailstringNoOne address to validate. Provide email or emails.
emailsarray of stringNoBatch of addresses to validate (max 50).
skipDnsbooleanNoSkip MX/A lookups and return syntax + heuristic checks only. Default: false.

Example response

The provider's example. We can't check it without paying.

{
  "results": [
    {
      "checks": {
        "disposable": false,
        "freeProvider": false,
        "hasPlusTag": false,
        "role": false
      },
      "dns": {
        "deliverable": true,
        "method": "MX",
        "mxRecords": [
          "mx.example.com"
        ]
      },
      "domain": "example.com",
      "email": "[email protected]",
      "valid": true
    }
  ]
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.003.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://keyronne.com/api/email-validate' \
  -H 'content-type: application/json' \
  --data-raw '{"emails":["[email protected]","[email protected]","[email protected]"]}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://keyronne.com/api/email-validate' \
  -H 'content-type: application/json' \
  --data-raw '{"emails":["[email protected]","[email protected]","[email protected]"]}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.003 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.003" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.003 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fkeyronne.com%2Fapi%2Femail-validate&method=POST
const res = await pay("https://keyronne.com/api/email-validate", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "emails": [
      "[email protected]",
      "[email protected]",
      "[email protected]"
    ]
  }),
});
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.003 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.003"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://keyronne.com/api/email-validate",
        json={
            "emails": [
                "[email protected]",
                "[email protected]",
                "[email protected]",
            ],
        },
    )
    print(res.status_code, res.text)

Security scan

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

Recent checks

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27 min agoPassed402302 ms$0.003
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