Index onlineMerchant portal
Api Endpoint

ISBN Book Lookup

Resolves an ISBN-10 or ISBN-13 to a normalized bibliographic record from Open Library (Internet Archive): title, authors, publishers, publish date, page count, ISBN identifiers, subjects and cover image URL. Query: ?isbn=9780140328721 (hyphens/spaces tolerated). Unknown ISBNs return 400 (not charged). 7-day cache. Built for catalog management, e-commerce listings and used-book pricing agents.

Open interactive test console

Offering

Provider
data.greeneris.io
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://data.greeneris.io/v1/books/isbn
MIME type
application/json
First seen
2026-10-16T01:50:45.949Z
Last seen
Tags
books, isbn, bibliographic, catalog, ecommerce

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
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "2000",
    "payTo": "0x6ab8efe305cce67daa48c97bde29c04402822dff"
  }
]

Observed health

Status
Healthy
Latest latency
102 ms
Average latency
186 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

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET",
        "HEAD",
        "DELETE"
      ]
    },
    "queryParams": {
      "type": "object",
      "required": [
        "isbn"
      ],
      "properties": {
        "isbn": {
          "type": "string",
          "description": "ISBN-10 or ISBN-13 (hyphens/spaces allowed)"
        }
      }
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "type": "json",
  "example": {
    "isbn": "9780140328721",
    "title": "Fantastic Mr. Fox",
    "source": "Open Library (openlibrary.org, Internet Archive)",
    "authors": [
      "Roald Dahl"
    ],
    "isbn_10": "0140328726",
    "isbn_13": "9780140328721",
    "subjects": [
      "Animals",
      "Hunger",
      "Juvenile fiction",
      "Foxes",
      "Fiction"
    ],
    "subtitle": null,
    "cover_url": "https://covers.openlibrary.org/b/id/15152634-L.jpg",
    "publishers": [
      "Puffin"
    ],
    "publish_date": "October 1, 1988",
    "openlibrary_id": "OL7353617M",
    "number_of_pages": 96,
    "openlibrary_url": "http://openlibrary.org/books/OL7353617M/Fantastic_Mr._Fox"
  }
}