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x402-datashop-production.up.railway.app books isbn
https://x402-datashop-production.up.railway.app/v1/books/isbn
payable
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.
We sent a real
GET request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.002
- Network
- base
- Pay to
- 0x6ab8efe305cce67daa48c97bde29c04402822dff
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- GET
- Response latency
- 84 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-08-10T09:15:54.766Z (2d ago)
- Category
- search
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fx402-datashop-production.up.railway.app%2Fv1%2Fbooks%2Fisbn"