the402 endpoint detail

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library.forgemesh.io book-chapter

https://library.forgemesh.io/book-chapter

payable

Retrieve the full text of one chapter from an indexed book by book_id and chapter number. Chapter 0 is front matter before the first detected heading. Use /book-metadata first to see a book's valid chapter range. No license, no API key required.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.005
Network
base
Pay to
0x85df5380DEbe236AD6BF49dE788243924B080267
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
98 ms
Payment options
1 usable of 1
Last checked
2026-08-10T09:16:36.275Z (4d ago)
Category
search

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Flibrary.forgemesh.io%2Fbook-chapter"