Read

{
  "author": "Jane Doe",
  "canonical": "https://example.com/blog/post",
  "chars": 91,
  "content": "# Post title\n\nFirst paragraph with a [link](https://example.com/other).\n\n- item one\n- item two",
  "content_type": "text/html; charset=utf-8",
  "description": "Meta description",
  "evidence": {
    "bytes": 48213,
    "content_sha256": "…",
    "fetched_at": "2026-09-25T20:00:00.000Z"
  },
  "final_url": "https://example.com/blog/post",
  "format": "markdown",
  "http_status": 200,
  "image": "https://example.com/og.png",
  "lang": "en",
  "link_count": 1,
  "links": [
    {
      "href": "https://example.com/other",
      "text": "link"
    }
  ],
  "ms": 640,
  "published_time": "2026-09-01T00:00:00Z",
  "site_name": "Example",
  "title": "Post title",
  "truncated": false,
  "url": "https://example.com/blog/post",
  "warnings": [],
  "word_count": 14
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://offercheck.offercheck.workers.dev/v1/read?url=https%3A%2F%2Fexample.com%2Fblog%2Fpost'

# 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://offercheck.offercheck.workers.dev/v1/read?url=https%3A%2F%2Fexample.com%2Fblog%2Fpost' \
  | 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 $0.001 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.001" });
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 $0.001 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Foffercheck.offercheck.workers.dev%2Fv1%2Fread
const res = await pay("https://offercheck.offercheck.workers.dev/v1/read?url=https%3A%2F%2Fexample.com%2Fblog%2Fpost");
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 $0.001 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.001"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://offercheck.offercheck.workers.dev/v1/read?url=https%3A%2F%2Fexample.com%2Fblog%2Fpost")
    print(res.status_code, res.text)