Api Endpoint

HALOWERK Email Check

Same checks as /email, executed concurrently with one DNS lookup per distinct domain. The 402 quotes the exact amount for the number of addresses in the request body.

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Offering

Provider: mail.halowerk.com
Method: POST
Offering type: Api Endpoint
Transport type: http
Category: Security
Delivery: Not provided
Pricing model: Not provided
x402 version: 2

Endpoint context

URL: https://mail.halowerk.com/email/batch
MIME type: application/json
First seen: 2026-10-16T01:52:52.778Z
Last seen: 2026-11-02T20:46:36.615Z
Tags: Email, Validation

Website

Payment pricing

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

Payment option 1: 0.001 USDC
Atomic price: 1000 · Network: eip155:8453 · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1000",
    "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E"
  }
]

Observed health

Status: Healthy
Latest latency: 313 ms
Average latency: 666 ms
HTTP status: 204
Last checked: 2026-11-04T22:09:48.172Z
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",
        "PUT",
        "PATCH"
      ]
    },
    "bodyType": {
      "type": "string",
      "enum": [
        "json",
        "form-data",
        "text"
      ]
    },
    "body": {
      "type": "object",
      "required": [
        "emails"
      ],
      "properties": {
        "emails": {
          "type": "array",
          "minItems": 1,
          "maxItems": 100,
          "items": {
            "type": "string"
          },
          "description": "Between 1 and 100 addresses. Billed at 0.0006 USDC per address with a 0.001 USDC minimum charge."
        },
        "smtp_check": {
          "type": "boolean",
          "default": false,
          "description": "Ask for an optional SMTP probe. Off by default, heavily throttled, one attempt per target and never retried. Without it the verdict of a routable address stays \"unknown\"."
        }
      }
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "additionalProperties": false
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "body": {
          "properties": {
            "emails": {
              "description": "Between 1 and 100 addresses. Billed at 0.0006 USDC per address with a 0.001 USDC minimum charge.",
              "items": {
                "type": "string"
              },
              "maxItems": 100,
              "minItems": 1,
              "type": "array"
            },
            "smtp_check": {
              "default": false,
              "description": "Ask for an optional SMTP probe. Off by default, heavily throttled, one attempt per target and never retried. Without it the verdict of a routable address stays \"unknown\".",
              "type": "boolean"
            }
          },
          "required": [
            "emails"
          ],
          "type": "object"
        },
        "bodyType": {
          "enum": [
            "json",
            "form-data",
            "text"
          ],
          "type": "string"
        },
        "method": {
          "enum": [
            "POST",
            "PUT",
            "PATCH"
          ],
          "type": "string"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method",
        "bodyType",
        "body"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}