Index onlineMerchant portal
Api Endpoint

SiteCheck

Book lookup by ISBN (checked before the call) or by title and/or author: title, subtitle, authors, publishers, first publish year, median page count, ISBN-10 and ISBN-13 of the matching edition, languages, subjects, cover image URL, and the Open Library work and Wikidata ids. Data from Open Library (CC0). A title with no match is a 404, not charged. Up to 20 results.

Open interactive test console

Offering

Provider
api.sitecheck-api.workers.dev
Method
GET
Offering type
Api Endpoint
Transport type
http
Category
Science And Education
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://api.sitecheck-api.workers.dev/api/books
MIME type
application/json
First seen
2026-10-16T01:51:02.144Z
Last seen
Tags
book lookup, isbn, book search, open library, book metadata, cover image, library catalog

Website

Payment pricing

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

Payment option 1
0.002 USDC
Atomic price: 2000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2
0.002 USDC
Atomic price: 2000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Payment option 3
2000 atomic units
Atomic price: 2000 · Network: eip155:5042 · Asset: 0x3600000000000000000000000000000000000000 · Scheme: exact
Payment option 4
0.002 USDC
Atomic price: 2000 · Network: eip155:137 · Asset: USDC · Scheme: exact
Payment option 5
0.002 USDC
Atomic price: 2000 · Network: eip155:42161 · Asset: USDC · Scheme: exact
Payment option 6
0.002 USDC
Atomic price: 2000 · Network: eip155:143 · Asset: USDC · Scheme: exact
Payment option 7
0.002 USDC
Atomic price: 2000 · Network: eip155:480 · Asset: USDC · Scheme: exact
Payment option 8
0.002 USDC
Atomic price: 2000 · Network: eip155:10 · Asset: USDC · Scheme: exact
Payment option 9
2000 atomic units
Atomic price: 2000 · Network: eip155:42220 · Asset: 0xcebA9300f2b948710d2653dD7B07f33A8B32118C · Scheme: exact
Payment option 10
20000 atomic units
Atomic price: 20000 · Network: stellar:pubnet · Asset: CCW67TSZV3SSS2HXMBQ5JFGCKJNXKZM7UQUWUZPUTHXSTZLEO7SJMI75 · Scheme: exact
Payment option 11
1603 atomic units
Atomic price: 1603 · Network: xrpl:0 · Asset: XRP · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "2000",
    "payTo": "0xb8491F953e6860D3b5840b73c60883Ff099ceAfA"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "2000",
    "payTo": "J8vnmBx4pS1X7UUBTfz1yWBKiw69Dj2yRGRHDaXBRdhR"
  },
  {
    "scheme": "exact",
    "network": "eip155:5042",
    "asset": "0x3600000000000000000000000000000000000000",
    "amount": "2000",
    "payTo": "0xb8491F953e6860D3b5840b73c60883Ff099ceAfA"
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "2000",
    "payTo": "0xb8491F953e6860D3b5840b73c60883Ff099ceAfA"
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "amount": "2000",
    "payTo": "0xb8491F953e6860D3b5840b73c60883Ff099ceAfA"
  },
  {
    "scheme": "exact",
    "network": "eip155:143",
    "asset": "0x754704Bc059F8C67012fEd69BC8A327a5aafb603",
    "amount": "2000",
    "payTo": "0xb8491F953e6860D3b5840b73c60883Ff099ceAfA"
  },
  {
    "scheme": "exact",
    "network": "eip155:480",
    "asset": "0x79A02482A880bCE3F13e09Da970dC34db4CD24d1",
    "amount": "2000",
    "payTo": "0xb8491F953e6860D3b5840b73c60883Ff099ceAfA"
  },
  {
    "scheme": "exact",
    "network": "eip155:10",
    "asset": "0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85",
    "amount": "2000",
    "payTo": "0xb8491F953e6860D3b5840b73c60883Ff099ceAfA"
  },
  {
    "scheme": "exact",
    "network": "eip155:42220",
    "asset": "0xcebA9300f2b948710d2653dD7B07f33A8B32118C",
    "amount": "2000",
    "payTo": "0xb8491F953e6860D3b5840b73c60883Ff099ceAfA"
  },
  {
    "scheme": "exact",
    "network": "stellar:pubnet",
    "asset": "CCW67TSZV3SSS2HXMBQ5JFGCKJNXKZM7UQUWUZPUTHXSTZLEO7SJMI75",
    "amount": "20000",
    "payTo": "GBIX2M7HNL2G2VYU5KZ446OSN55ZWHS3WBEUP4JTLS6R34VXIGTDOAFI"
  },
  {
    "scheme": "exact",
    "network": "xrpl:0",
    "asset": "XRP",
    "amount": "1603",
    "payTo": "rDxNZCDfLxUzeMWGGwsY3sjQT8eoZCf8UJ"
  }
]

Observed health

Status
Healthy
Latest latency
41 ms
Average latency
1191 ms
HTTP status
402
Last checked
Reachability
100% over 12 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": {
        "isbn": {
          "type": "string",
          "description": "ISBN-10 or ISBN-13 with or without hyphens (optional)"
        },
        "title": {
          "type": "string",
          "description": "Title words, up to 200 characters (optional)"
        },
        "author": {
          "type": "string",
          "description": "Author name, up to 200 characters (optional)"
        },
        "limit": {
          "type": "string",
          "description": "Results, 1 to 20, default 5"
        }
      },
      "required": []
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "method": {
          "enum": [
            "GET"
          ],
          "type": "string"
        },
        "queryParams": {
          "properties": {
            "author": {
              "description": "Author name, up to 200 characters (optional)",
              "type": "string"
            },
            "isbn": {
              "description": "ISBN-10 or ISBN-13 with or without hyphens (optional)",
              "type": "string"
            },
            "limit": {
              "description": "Results, 1 to 20, default 5",
              "type": "string"
            },
            "title": {
              "description": "Title words, up to 200 characters (optional)",
              "type": "string"
            }
          },
          "required": [],
          "type": "object"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}