Api Endpoint

x402-catalog-history.ai-business-surface.workers.dev

Is this ISIN well formed? One GET applies the ISO 6166 check digit and returns valid, the supplied and expected check digit, the checksum total, the country code and name, and the 9-character NSIN. Malformed input is 400 before payment; a wrong check digit is 200 with valid=false. The algorithm is bundled in this Worker; no registry is queried, nothing is stored and the query is not logged. A purchase is two calls by design: this first call returns 402 with the price and the payment terms, and you then repeat the same request with the PAYMENT-SIGNATURE header to receive the 200 delivery.

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Offering

Provider: x402-catalog-history.ai-business-surface.workers.dev
Method: GET
Offering type: Api Endpoint
Transport type: http
Category: Other
Delivery: Not provided
Pricing model: Not provided
x402 version: 2

Endpoint context

URL: https://x402-catalog-history.ai-business-surface.workers.dev/isin
MIME type: application/json
First seen: 2026-10-23T22:47:46.408Z
Last seen: 2026-11-02T02:50:42.458Z
Tags: isin, iso 6166, check digit, luhn, securities, identifier, Validation, Finance

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": "0x6f60659390aDA1D02B14024d8c9d0C889f2F89c3"
  }
]

Observed health

Status: Healthy
Latest latency: 1247 ms
Average latency: 1014 ms
HTTP status: 402
Last checked: 2026-11-02T02:50:42.452Z
Reachability: 100% over 7 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": [
        "GET"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {
        "q": {
          "type": "string",
          "maxLength": 64
        }
      },
      "required": [
        "q"
      ],
      "additionalProperties": false
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string"
    },
    "example": {
      "type": "object"
    }
  },
  "required": [
    "type"
  ]
}