Api Endpoint

buero.halowerk.com

Up to 500 input addresses, billed per supplied row including duplicates/invalid rows: 0.0001 USDC per address, minimum 0.003 and maximum 0.050. Reuses the existing mail checker; one inflight domain lookup is shared within the bounded process and existing domain cache is retained. Original rows, exact-local-part/IDNA-domain duplicates, candidates, removals and review cases remain traceable. No mailbox proof without SMTP; SMTP disabled, catch-all unknown, no email sent.

Open interactive test console

Offering

Provider: buero.halowerk.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://buero.halowerk.com/v1/email-list-clean
MIME type: Not provided
First seen: 2026-10-16T01:58:03.323Z
Last seen: 2026-11-01T15:23:28.507Z
Tags: None supplied

Website

Payment pricing

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

Payment option 1: 0.003 USDC
Atomic price: 3000 · Network: eip155:8453 · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "3000",
    "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E"
  }
]

Observed health

Status: Healthy
Latest latency: 322 ms
Average latency: 411 ms
HTTP status: 204
Last checked: 2026-11-02T14:45:03.190Z
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

{
  "additionalProperties": false,
  "properties": {
    "body": {
      "additionalProperties": false,
      "properties": {
        "emails": {
          "items": {
            "maxLength": 320,
            "minLength": 1,
            "type": "string"
          },
          "maxItems": 500,
          "minItems": 1,
          "type": "array"
        }
      },
      "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"
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "body": {
          "additionalProperties": false,
          "properties": {
            "emails": {
              "items": {
                "maxLength": 320,
                "minLength": 1,
                "type": "string"
              },
              "maxItems": 500,
              "minItems": 1,
              "type": "array"
            }
          },
          "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"
}