Articles Extract

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://reader-api-production-bde1.up.railway.app/v1/articles/extract' \
  -H 'content-type: application/json' \
  --data-raw '{"html":"<!doctype html><html lang=\"en\"><head><title>Launch notes<\/title><meta name=\"description\" content=\"Release handoff notes\"><\/head><body><nav>Home | Pricing | Contact<\/nav><article><h1>Launch notes<\/h1><p>The release is ready for review. The deployment checklist includes payment verification, public documentation, and customer support handoff.<\/p><p>Each service has a clear contract and a working example. The team will monitor errors, latency, and successful settlement receipts throughout the first week.<\/p><h2>Milestones<\/h2><table><tr><th>Task<\/th><th>Status<\/th><\/tr><tr><td>Payment verification<\/td><td>Complete<\/td><\/tr><\/table><p>Read the <a href=\"/checklist\">full checklist<\/a> before approving the release.<\/p><\/article><footer>Copyright Example<\/footer><\/body><\/html>","url":"https://example.com/notes/launch"}'

# 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 - -X POST 'https://reader-api-production-bde1.up.railway.app/v1/articles/extract' \
  -H 'content-type: application/json' \
  --data-raw '{"html":"<!doctype html><html lang=\"en\"><head><title>Launch notes<\/title><meta name=\"description\" content=\"Release handoff notes\"><\/head><body><nav>Home | Pricing | Contact<\/nav><article><h1>Launch notes<\/h1><p>The release is ready for review. The deployment checklist includes payment verification, public documentation, and customer support handoff.<\/p><p>Each service has a clear contract and a working example. The team will monitor errors, latency, and successful settlement receipts throughout the first week.<\/p><h2>Milestones<\/h2><table><tr><th>Task<\/th><th>Status<\/th><\/tr><tr><td>Payment verification<\/td><td>Complete<\/td><\/tr><\/table><p>Read the <a href=\"/checklist\">full checklist<\/a> before approving the release.<\/p><\/article><footer>Copyright Example<\/footer><\/body><\/html>","url":"https://example.com/notes/launch"}' \
  | 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 $0.02 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.02" });
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 $0.02 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Freader-api-production-bde1.up.railway.app%2Fv1%2Farticles%2Fextract&method=POST
const res = await pay("https://reader-api-production-bde1.up.railway.app/v1/articles/extract", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "html": "<!doctype html><html lang=\"en\"><head><title>Launch notes<\/title><meta name=\"description\" content=\"Release handoff notes\"><\/head><body><nav>Home | Pricing | Contact<\/nav><article><h1>Launch notes<\/h1><p>The release is ready for review. The deployment checklist includes payment verification, public documentation, and customer support handoff.<\/p><p>Each service has a clear contract and a working example. The team will monitor errors, latency, and successful settlement receipts throughout the first week.<\/p><h2>Milestones<\/h2><table><tr><th>Task<\/th><th>Status<\/th><\/tr><tr><td>Payment verification<\/td><td>Complete<\/td><\/tr><\/table><p>Read the <a href=\"/checklist\">full checklist<\/a> before approving the release.<\/p><\/article><footer>Copyright Example<\/footer><\/body><\/html>",
    "url": "https://example.com/notes/launch"
  }),
});
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 $0.02 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.02"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://reader-api-production-bde1.up.railway.app/v1/articles/extract",
        json={
            "html": "<!doctype html><html lang=\"en\"><head><title>Launch notes</title><meta name=\"description\" content=\"Release handoff notes\"></head><body><nav>Home | Pricing | Contact</nav><article><h1>Launch notes</h1><p>The release is ready for review. The deployment checklist includes payment verification, public documentation, and customer support handoff.</p><p>Each service has a clear contract and a working example. The team will monitor errors, latency, and successful settlement receipts throughout the first week.</p><h2>Milestones</h2><table><tr><th>Task</th><th>Status</th></tr><tr><td>Payment verification</td><td>Complete</td></tr></table><p>Read the <a href=\"/checklist\">full checklist</a> before approving the release.</p></article><footer>Copyright Example</footer></body></html>",
            "url": "https://example.com/notes/launch",
        },
    )
    print(res.status_code, res.text)