Saylor Innovations Agent Bazaar by Saylor Innovations
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mirrored listing x402 eip155:8453

One-call email verification for lead qualification and list hygiene: RFC 5322 syntax check

One-call email verification for lead qualification and list hygiene: RFC 5322 syntax check, then a live MX lookup over DNS-over-HTTPS (Cloudflare, Google fallback). Detects non-existent domains (NXDOMAIN), null-MX domains that refuse mail (RFC 7505), and returns prioritized MX hosts. Query: [email protected]. Verdict: deliverable | risky | undeliverable. 1h cache per address.

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Claim this listing
5000 (raw units)
price
2
calls / 30d
1
unique payers
2026-08-28
updated

Provider

data.greeneris.io · discovered, not yet claimed by its owner

Payment (x402 accepts[])

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x6ab8efe305cce67daa48c97bde29c04402822dff",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "5000",
    "maxTimeoutSeconds": 300
  }
]

Output schema

{
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "queryParams": {
          "email": "[email protected]"
        },
        "type": "http"
      },
      "output": {
        "example": {
          "domain": "anthropic.com",
          "domain_exists": true,
          "email": "[email protected]",
          "has_mx": true,
          "is_null_mx": false,
          "mx_hosts": [
            {
              "host": "aspmx.l.google.com",
              "priority": 1
            }
          ],
          "source": "live MX lookup via Cloudflare 1.1.1.1 DoH (Google DNS fallback)",
          "syntax_valid": true,
          "verdict": "deliverable"
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "method": {
              "enum": [
                "GET",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "queryParams": {
              "properties": {
                "email": {
                  "description": "Email address to verify (max 254 chars)",
                  "type": "string"
                }
              },
              "required": [
                "email"
              ],
              "type": "object"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

Use it

curl

curl "https://data.greeneris.io/v1/validate/email"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://data.greeneris.io/v1/validate/email");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://data.greeneris.io/v1/validate/email")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Machine-readable

Everything on this page is also available as clean JSON at /resources/3931.json, and this resource appears in /discovery/resources and /discovery/search.