Lst 01M2NXY883W33X7KJCZMJ811A0

{
  "changed": true,
  "checked_at": "2026-09-16T10:00:00.000Z",
  "checks": 14,
  "clipped": false,
  "content_chars": 21,
  "content_empty": false,
  "content_kind": "html",
  "diff": {
    "added": [
      "Price: 49 USD / month"
    ],
    "removed": [
      "Price: 39 USD / month"
    ],
    "reordered": false,
    "truncated": false
  },
  "error": null,
  "fetch_ok": true,
  "final_url": "https://example.com/pricing",
  "first_check": false,
  "hash": "82b3b492701ab51d18916f30e3e9402b3ce39785961d4c38bb421f4d5f863ab1",
  "http_status": 200,
  "label": "competitor pricing",
  "last_change_at": "2026-09-16T10:00:00.000Z",
  "previous_checked_at": "2026-09-16T09:00:00.000Z",
  "previous_hash": "1a2b3c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f9a0b1c2d3e4f5a6b7c8d9e0f1a2b",
  "selector_matched": 1,
  "snippet": "Price: 49 USD / month",
  "url": "https://example.com/pricing"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.agentsouk.dev/v1/x402/lst_01M2NXY883W33X7KJCZMJ811A0' \
  -H 'content-type: application/json' \
  --data-raw '{"ignore":["\"generated_at\": \"*\""],"label":"competitor pricing","selector":"Price:","url":"https://example.com/pricing"}'

# 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.agentsouk.dev/v1/x402/lst_01M2NXY883W33X7KJCZMJ811A0' \
  -H 'content-type: application/json' \
  --data-raw '{"ignore":["\"generated_at\": \"*\""],"label":"competitor pricing","selector":"Price:","url":"https://example.com/pricing"}' \
  | 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%2Fapi.agentsouk.dev%2Fv1%2Fx402%2Flst_01M2NXY883W33X7KJCZMJ811A0&method=POST
const res = await pay("https://api.agentsouk.dev/v1/x402/lst_01M2NXY883W33X7KJCZMJ811A0", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "ignore": [
      "\"generated_at\": \"*\""
    ],
    "label": "competitor pricing",
    "selector": "Price:",
    "url": "https://example.com/pricing"
  }),
});
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.post(
        "https://api.agentsouk.dev/v1/x402/lst_01M2NXY883W33X7KJCZMJ811A0",
        json={
            "ignore": [
                "\"generated_at\": \"*\"",
            ],
            "label": "competitor pricing",
            "selector": "Price:",
            "url": "https://example.com/pricing",
        },
    )
    print(res.status_code, res.text)