Hackernews User

{
  "about": "Bug fixer.",
  "created_at": "2006-10-09T18:21:32Z",
  "karma": 157316,
  "recent": [
    {
      "author": "pg",
      "comments": null,
      "created_at": "2024-03-11T12:57:11Z",
      "hn_url": "https://news.ycombinator.com/item?id=39667625",
      "points": null,
      "text": "In earlier drafts I wrote \"the existence of some set of best essays follows necessarily\" but it sounded so pedantic that it didn't seem worth keeping just to protect myself from being accused of not understanding the distinction between a partial and total order. I assumed anyone reading it in good ",
      "title": null,
      "type": "comment",
      "url": null
    },
    {
      "author": "pg",
      "comments": null,
      "created_at": "2023-08-27T01:29:42Z",
      "hn_url": "https://news.ycombinator.com/item?id=37278578",
      "points": null,
      "text": "It's not available yet. And in any case if this is the future there should be multiple companies doing it, not just Apple.",
      "title": null,
      "type": "comment",
      "url": null
    }
  ],
  "source": "Hacker News (official Firebase API and Algolia HN Search)",
  "total_submissions": 15565,
  "url": "https://news.ycombinator.com/user?id=pg",
  "username": "pg"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.vextorium.com/v1/hackernews-user' \
  -H 'content-type: application/json' \
  --data-raw '{"submissions":10,"username":"pg"}'

# 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-user' \
  -H 'content-type: application/json' \
  --data-raw '{"submissions":10,"username":"pg"}' \
  | 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-user&method=POST
const res = await pay("https://api.vextorium.com/v1/hackernews-user", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "submissions": 10,
    "username": "pg"
  }),
});
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-user",
        json={
            "submissions": 10,
            "username": "pg",
        },
    )
    print(res.status_code, res.text)