Api Endpoint

handel.halowerk.com

One synchronous observation, not a recurring subscription. The caller schedules later checks and supplies its previous numeric offer price. Reuses Fetchwerk product extraction from actual HTML and returns raw price evidence. No conversion, no inferred price, no shipping-total guarantee and no JavaScript-only shop support. Source and callback require public IPv4 HTTPS on port443; every connection is DNS-checked and pinned, redirects rechecked (callbacks never redirect).

Open interactive test console

Offering

Provider
handel.halowerk.com
Method
POST
Offering type
Api Endpoint
Transport type
http
Category
Business And Commerce
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://handel.halowerk.com/v1/price-change-callback
MIME type
Not provided
First seen
2026-10-16T01:58:26.121Z
Last seen
Tags
None supplied

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
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "6000",
    "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E"
  }
]

Observed health

Status
Healthy
Latest latency
289 ms
Average latency
312 ms
HTTP status
204
Last checked
Reachability
100% over 10 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": {
        "callback_url": {
          "maxLength": 2000,
          "type": "string"
        },
        "direction": {
          "default": "any",
          "enum": [
            "any",
            "decrease",
            "increase"
          ],
          "type": "string"
        },
        "idempotency_key": {
          "maxLength": 128,
          "minLength": 32,
          "pattern": "^[A-Za-z0-9_-]+$",
          "type": "string"
        },
        "minimum_change": {
          "default": 0,
          "maximum": 1000000000,
          "minimum": 0,
          "type": "number"
        },
        "previous": {
          "additionalProperties": false,
          "properties": {
            "currency": {
              "pattern": "^[A-Z]{3}$",
              "type": "string"
            },
            "value": {
              "maximum": 1000000000,
              "minimum": 0,
              "type": "number"
            }
          },
          "required": [
            "value",
            "currency"
          ],
          "type": "object"
        },
        "url": {
          "maxLength": 2000,
          "type": "string"
        }
      },
      "required": [
        "url",
        "previous",
        "callback_url",
        "idempotency_key"
      ],
      "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

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "body": {
          "additionalProperties": false,
          "properties": {
            "callback_url": {
              "maxLength": 2000,
              "type": "string"
            },
            "direction": {
              "default": "any",
              "enum": [
                "any",
                "decrease",
                "increase"
              ],
              "type": "string"
            },
            "idempotency_key": {
              "maxLength": 128,
              "minLength": 32,
              "pattern": "^[A-Za-z0-9_-]+$",
              "type": "string"
            },
            "minimum_change": {
              "default": 0,
              "maximum": 1000000000,
              "minimum": 0,
              "type": "number"
            },
            "previous": {
              "additionalProperties": false,
              "properties": {
                "currency": {
                  "pattern": "^[A-Z]{3}$",
                  "type": "string"
                },
                "value": {
                  "maximum": 1000000000,
                  "minimum": 0,
                  "type": "number"
                }
              },
              "required": [
                "value",
                "currency"
              ],
              "type": "object"
            },
            "url": {
              "maxLength": 2000,
              "type": "string"
            }
          },
          "required": [
            "url",
            "previous",
            "callback_url",
            "idempotency_key"
          ],
          "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"
}