Api Endpoint

hcrb.in

Validate any 12-19 digit number by the Luhn mod-10 algorithm. Never submit real payment card numbers. Returns signed XDR-1 receipt.

Open interactive test console

Offering

Provider: hcrb.in
Method: POST
Offering type: Api Endpoint
Transport type: http
Category: Security
Delivery: Not provided
Pricing model: Not provided
x402 version: 2

Endpoint context

URL: https://hcrb.in/v1/tools/luhn-check/call
MIME type: application/json
First seen: 2026-10-16T01:51:40.954Z
Last seen: 2026-11-02T07:19:30.509Z
Tags: None supplied

Website

Payment pricing

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

Payment option 1: 0.005 USDC
Atomic price: 5000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2: 5000 atomic units
Atomic price: 5000 · Network: eip155:8453 · Asset: 0x60a3E35Cc302bFA44Cb288Bc5a4F316Fdb1adb42 · Scheme: exact
Payment option 3: 0.005 USDC
Atomic price: 5000 · Network: eip155:137 · Asset: USDC · Scheme: exact
Payment option 4: 0.005 USDC
Atomic price: 5000 · Network: eip155:43114 · Asset: USDC · Scheme: exact
Payment option 5: 5000 atomic units
Atomic price: 5000 · Network: eip155:43114 · Asset: 0xC891EB4cbdEFf6e073e859e987815Ed1505c2ACD · Scheme: exact
Payment option 6: 0.005 USDC
Atomic price: 5000 · Network: eip155:42161 · Asset: USDC · Scheme: exact
Payment option 7: 0.005 USDC
Atomic price: 5000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "5000",
    "payTo": "0xc59c85e661d34084a7769f955d17fd38254a6235"
  },
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x60a3E35Cc302bFA44Cb288Bc5a4F316Fdb1adb42",
    "amount": "5000",
    "payTo": "0xc59c85e661d34084a7769f955d17fd38254a6235"
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "5000",
    "payTo": "0xc59c85e661d34084a7769f955d17fd38254a6235"
  },
  {
    "scheme": "exact",
    "network": "eip155:43114",
    "asset": "0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E",
    "amount": "5000",
    "payTo": "0xc59c85e661d34084a7769f955d17fd38254a6235"
  },
  {
    "scheme": "exact",
    "network": "eip155:43114",
    "asset": "0xC891EB4cbdEFf6e073e859e987815Ed1505c2ACD",
    "amount": "5000",
    "payTo": "0xc59c85e661d34084a7769f955d17fd38254a6235"
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "amount": "5000",
    "payTo": "0xc59c85e661d34084a7769f955d17fd38254a6235"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "5000",
    "payTo": "AY3ZWZ5rEJ2RgMorWguxZ86jjbCxuVgvkoB8ThT3N5uC"
  }
]

Observed health

Status: Healthy
Latest latency: 472 ms
Average latency: 407 ms
HTTP status: 204
Last checked: 2026-11-02T22:39:02.015Z
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

{
  "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",
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "number"
          ],
          "properties": {
            "number": {
              "type": "string",
              "description": "12-19 digit number; spaces/dashes allowed."
            }
          }
        }
      },
      "required": [
        "input"
      ],
      "additionalProperties": false
    }
  },
  "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": {
            "input": {
              "properties": {
                "number": {
                  "description": "12-19 digit number; spaces/dashes allowed.",
                  "type": "string"
                }
              },
              "required": [
                "number"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "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": {
      "properties": {
        "example": {
          "properties": {
            "country": {
              "type": "string"
            },
            "normalized": {
              "type": "string"
            },
            "reason": {
              "type": "string"
            },
            "scope": {
              "type": "string"
            },
            "tool": {
              "type": "string"
            },
            "valid": {
              "type": "boolean"
            }
          },
          "required": [
            "valid",
            "reason"
          ],
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}