Books Author

{
  "alternate_names": [
    "Dzhon R. R. Tolkin",
    "J. R. R. Tolkien",
    "J. R. R. Tolkiën",
    "J. R.R. Tolkien",
    "John R. R. Tolkien",
    "John Ronald Reuel Tolkien"
  ],
  "bio": "John Ronald Reuel Tolkien (1892-1973) was a major scholar of the English language, specialising in Old and Middle English. Twice Professor of Anglo-Saxon (Old English) at the University of Oxford, he also wrote a number of stories, including most famously The Hobbit (1937) and The Lord of the Rings (1954-1955), which are set in a pre-historic era in an invented version of the world which he called by the Middle English name of Middle-earth. This was peopled by Men (and women), Elves, Dwarves, Trolls, Orcs (or Goblins) and of course Hobbits. He has regularly been condemned by the Eng. Lit. establishment, with honourable exceptions, but loved by literally millions of readers worldwide. In the…",
  "birth_date": "3 January 1892",
  "death_date": "2 September 1973",
  "key": "OL26320A",
  "matched": 29,
  "name": "J.R.R. Tolkien",
  "other_matches": [
    {
      "birth_date": "21 November 1924",
      "death_date": "16 January 2020",
      "key": "OL2623360A",
      "name": "Christopher Tolkien",
      "top_work": "The Silmarillion",
      "work_count": 41
    },
    {
      "birth_date": null,
      "death_date": null,
      "key": "OL14431239A",
      "name": "F. Tolkien",
      "top_work": "Thug Life",
      "work_count": 21
    },
    {
      "birth_date": "1959",
      "death_date": null,
      "key": "OL1477672A",
      "name": "Simon Tolkien",
      "top_work": "Final Witness",
      "work_count": 14
    },
    {
      "birth_date": "1943",
      "death_date": null,
      "key": "OL2977155A",
      "name": "Michael Tolkien",
      "top_work": "Rainbow",
      "work_count": 9
    }
  ],
  "query": "Tolkien",
  "source": "Open Library",
  "top_subjects": [
    "Middle Earth (Imaginary place)",
    "Middle earth (imaginary place), fiction",
    "British and irish fiction (fictional works by one author)",
    "Fiction, fantasy, general",
    "Fiction",
    "History and criticism",
    "English Fantasy fiction",
    "Fiction, fantasy, epic"
  ],
  "top_work": "The Hobbit",
  "url": "https://openlibrary.org/authors/OL26320A",
  "wikipedia": null,
  "work_count": 346
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://saylorinnovations.com/api/books/author?q=Tolkien'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://saylorinnovations.com/api/books/author?q=Tolkien' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fsaylorinnovations.com%2Fapi%2Fbooks%2Fauthor
const res = await pay("https://saylorinnovations.com/api/books/author?q=Tolkien");
console.log(res.status, await res.text());

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://saylorinnovations.com/api/books/author?q=Tolkien")
    print(res.status_code, res.text)