Index onlineMerchant portal
Api Endpoint

d21 email_validate

Email Validate ($0.006): syntax + live MX/A-fallback deliverability + disposable-domain + role-address + free-webmail-provider + SPF/DMARC, with no third-party validation vendor at all -- syntax is RFC 5321/5322 grammar, MX/A/SPF/DMARC are live DNS via this server's own resolver (the same protocol-level sourcing as domain_intel), and disposable-domain detection is a static self-maintained list. Never opens an SMTP connection to the mailbox or confirms one specific inbox exists. Body { email }…

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Offering

Provider
draconic21-x402-api.onrender.com
Method
POST
Offering type
Api Endpoint
Transport type
http
Category
Infrastructure
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://draconic21-x402-api.onrender.com/v1/email_validate
MIME type
application/json
First seen
2026-10-16T01:50:32.458Z
Last seen
Tags
email-validation, email-verification, mx-lookup, disposable-email, deliverability

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.006 USDC
Atomic price: 6000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2
0.006 USDC
Atomic price: 6000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "6000",
    "payTo": "0x1520Ef5530AA71350049BE2903Cf078B38c40AE5"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "6000",
    "payTo": "6mc4GhWFyNcMh7gAVDWrKeYjDqFtEKWKQuZ9RTw2VkfM"
  }
]

Observed health

Status
Healthy
Latest latency
154 ms
Average latency
152 ms
HTTP status
204
Last checked
Reachability
100% over 9 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "POST"
      ]
    },
    "bodyType": {
      "type": "string",
      "enum": [
        "json",
        "form-data",
        "text"
      ]
    },
    "body": {
      "type": "object",
      "properties": {
        "email": {
          "type": "string",
          "description": "Email address to validate, e.g. 'info@example.com'."
        }
      },
      "required": [],
      "additionalProperties": true
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "additionalProperties": false
}

Output schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string"
    },
    "example": {
      "type": "object",
      "properties": {
        "email": {
          "type": "string"
        },
        "domain": {
          "type": "string"
        },
        "valid_syntax": {
          "type": "boolean"
        },
        "domain_exists": {
          "type": [
            "boolean",
            "null"
          ]
        },
        "has_mx": {
          "type": [
            "boolean",
            "null"
          ]
        },
        "mx": {
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "priority": {
                "type": "number"
              },
              "exchange": {
                "type": "string"
              }
            }
          }
        },
        "disposable": {
          "type": [
            "boolean",
            "null"
          ]
        },
        "role_address": {
          "type": [
            "boolean",
            "null"
          ]
        },
        "free_provider": {
          "type": [
            "boolean",
            "null"
          ]
        },
        "spf_present": {
          "type": [
            "boolean",
            "null"
          ]
        },
        "dmarc_present": {
          "type": [
            "boolean",
            "null"
          ]
        },
        "dmarc_policy": {
          "type": [
            "string",
            "null"
          ]
        },
        "verdict": {
          "type": "string",
          "enum": [
            "deliverable",
            "risky",
            "undeliverable"
          ]
        },
        "reason": {
          "type": "string"
        },
        "caveats": {
          "type": "array",
          "items": {
            "type": "string"
          }
        }
      },
      "required": [
        "email",
        "valid_syntax",
        "verdict",
        "reason",
        "caveats"
      ]
    }
  },
  "required": [
    "type"
  ]
}