Hackernews Search

{
  "count": 10,
  "query": "x402",
  "results": [
    {
      "author": "soheilpro",
      "comments": 251,
      "created_at": "2026-07-01T13:59:13Z",
      "hn_url": "https://news.ycombinator.com/item?id=48746914",
      "points": 355,
      "text": null,
      "title": "Monetization Gateway: Charge for any resource behind Cloudflare via x402",
      "url": "https://blog.cloudflare.com/monetization-gateway/"
    },
    {
      "author": "thm",
      "comments": 147,
      "created_at": "2025-09-23T14:14:46Z",
      "hn_url": "https://news.ycombinator.com/item?id=45347335",
      "points": 228,
      "text": null,
      "title": "x402 — An open protocol for internet-native payments",
      "url": "https://www.x402.org/"
    }
  ],
  "sort": "relevance",
  "source": "Hacker News (Algolia HN Search API)",
  "total": 9694,
  "type": "story"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.vextorium.com/v1/hackernews-search' \
  -H 'content-type: application/json' \
  --data-raw '{"limit":10,"query":"x402","sort":"relevance","type":"story"}'

# 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://api.vextorium.com/v1/hackernews-search' \
  -H 'content-type: application/json' \
  --data-raw '{"limit":10,"query":"x402","sort":"relevance","type":"story"}' \
  | 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 $0.003 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.003" });
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 $0.003 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.vextorium.com%2Fv1%2Fhackernews-search&method=POST
const res = await pay("https://api.vextorium.com/v1/hackernews-search", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "limit": 10,
    "query": "x402",
    "sort": "relevance",
    "type": "story"
  }),
});
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 $0.003 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.003"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.vextorium.com/v1/hackernews-search",
        json={
            "limit": 10,
            "query": "x402",
            "sort": "relevance",
            "type": "story",
        },
    )
    print(res.status_code, res.text)