Index onlineMerchant portal
Api Endpoint

scrooge-x402-tool-mill.vercel.app

Watch one public page for 7 days. Checks hourly. When the content hash changes, POST {watch_id,url,old_fingerprint,new_fingerprint,changed_at} to your https callback (5s timeout, one retry). POST JSON {"url":"https://example.com","callback_url":"https://example.com/hook"}. Returns {watch_id,url,expires,status_url}. Free status is GET /v1/watch/:id and does not show the callback. At 500 active watches, POST returns 503 before payment. $0.10 USDC on Base (eip155:8453). No API key.

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Offering

Provider
scrooge-x402-tool-mill.vercel.app
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://scrooge-x402-tool-mill.vercel.app/v1/watch
MIME type
Not provided
First seen
2026-10-16T01:54:06.400Z
Last seen
Tags
None supplied

Website

Payment pricing

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

Payment option 1
0.1 USDC
Atomic price: 100000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "100000",
    "payTo": "0xfE2353C808F2409cCb81508005A62cef29457706"
  }
]

Observed health

Status
Healthy
Latest latency
52 ms
Average latency
50 ms
HTTP status
402
Last checked
Reachability
100% over 14 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": {
          "description": "Public https URL that receives one POST when the page content hash changes",
          "format": "uri",
          "type": "string"
        },
        "url": {
          "description": "Public http(s) URL to fetch (SSRF-safe; private/link-local blocked)",
          "format": "uri",
          "type": "string"
        }
      },
      "required": [
        "url",
        "callback_url"
      ],
      "type": "object"
    },
    "bodyType": {
      "enum": [
        "json",
        "form-data",
        "text"
      ],
      "type": "string"
    },
    "method": {
      "enum": [
        "POST"
      ],
      "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": {
              "description": "Public https URL that receives one POST when the page content hash changes",
              "format": "uri",
              "type": "string"
            },
            "url": {
              "description": "Public http(s) URL to fetch (SSRF-safe; private/link-local blocked)",
              "format": "uri",
              "type": "string"
            }
          },
          "required": [
            "url",
            "callback_url"
          ],
          "type": "object"
        },
        "bodyType": {
          "enum": [
            "json",
            "form-data",
            "text"
          ],
          "type": "string"
        },
        "method": {
          "enum": [
            "POST"
          ],
          "type": "string"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method",
        "bodyType",
        "body"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "additionalProperties": false,
          "properties": {
            "expires": {
              "description": "When the 7-day watch ends",
              "format": "date-time",
              "type": "string"
            },
            "status_url": {
              "description": "GET this for status. The callback URL is not included.",
              "type": "string"
            },
            "url": {
              "description": "Page being watched",
              "type": "string"
            },
            "watch_id": {
              "description": "Id for the free status URL",
              "type": "string"
            }
          },
          "required": [
            "watch_id",
            "url",
            "expires",
            "status_url"
          ],
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}