Api Endpoint

handel.halowerk.com

Notify when a listed-price reduction reaches a chosen percentage; previous price must be positive. Uses an optional predicate extension of the proven Price-Callback motor. price_percentage_drop_decision records this exact rule; the rule executes BEFORE dispatch. Same public IPv4HTTPS pinned connections, robots checks,9s,1MiBHTML,at-most-once receipt/idempotency7days,failureschargedfalse. Caller supplies historical price and schedules polling.

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/articles/percentage-drop
MIME type
application/json
First seen
2026-10-16T01:54:06.400Z
Last seen
Tags
None supplied

Payment pricing

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

Payment option 1
0.007 USDC
Atomic price: 7000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "7000",
    "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E"
  }
]

Observed health

Status
Healthy
Latest latency
6774 ms
Average latency
2186 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",
        "PUT",
        "PATCH"
      ]
    },
    "bodyType": {
      "type": "string",
      "enum": [
        "json",
        "form-data",
        "text"
      ]
    },
    "body": {
      "type": "object",
      "required": [
        "url",
        "previous",
        "callback_url",
        "idempotency_key",
        "drop_percent"
      ],
      "additionalProperties": false,
      "properties": {
        "url": {
          "type": "string",
          "maxLength": 2048
        },
        "previous": {
          "type": "object",
          "required": [
            "value",
            "currency"
          ],
          "additionalProperties": false,
          "properties": {
            "value": {
              "type": "number",
              "minimum": 0,
              "maximum": 1000000000
            },
            "currency": {
              "type": "string",
              "pattern": "^[A-Z]{3}$"
            }
          }
        },
        "callback_url": {
          "type": "string",
          "maxLength": 2048
        },
        "idempotency_key": {
          "type": "string",
          "minLength": 32,
          "maxLength": 128,
          "pattern": "^[A-Za-z0-9_-]+$"
        },
        "drop_percent": {
          "type": "number",
          "exclusiveMinimum": 0,
          "maximum": 100
        }
      }
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "additionalProperties": false
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "body": {
          "additionalProperties": false,
          "properties": {
            "callback_url": {
              "maxLength": 2048,
              "type": "string"
            },
            "drop_percent": {
              "exclusiveMinimum": 0,
              "maximum": 100,
              "type": "number"
            },
            "idempotency_key": {
              "maxLength": 128,
              "minLength": 32,
              "pattern": "^[A-Za-z0-9_-]+$",
              "type": "string"
            },
            "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": 2048,
              "type": "string"
            }
          },
          "required": [
            "url",
            "previous",
            "callback_url",
            "idempotency_key",
            "drop_percent"
          ],
          "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": {
      "additionalProperties": false,
      "properties": {
        "type": {
          "const": "json",
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}