Screen

{
  "facilities": [
    {
      "abuse_icon": false,
      "ccn": "015009",
      "city": "RUSSELLVILLE",
      "deficiencies": {
        "immediate_jeopardy_most_recent_cycle": 2,
        "infection_control_citations": null,
        "most_recent_cycle_complaint": 0,
        "most_recent_cycle_standard": 4,
        "most_recent_cycle_total": 4,
        "most_recent_survey_date": "2023-03-02",
        "prior_cycles_total": 2,
        "serious_citations_most_recent_cycle": 0
      },
      "facility_name": "BURNS NURSING HOME, INC.",
      "penalties": {
        "fine_count": 0,
        "most_recent_penalty": null,
        "payment_denial_count": 0,
        "payment_denial_days": 0,
        "total_fines_usd": 0
      },
      "ratings": {
        "health_inspection": 2,
        "overall": 2,
        "quality_long_stay": 4,
        "quality_measures": 4,
        "quality_short_stay": 4,
        "staffing": 4
      },
      "special_focus_status": null,
      "state": "AL",
      "verdict": "Below average quality: 2 of 5 stars overall (CMS). 2 immediate-jeopardy citation(s) in the most recent survey cycle. No fines or payment denials in the CMS penalty file."
    }
  ],
  "found": true,
  "query": {
    "ccn": "015009"
  }
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://nursing-home-screen.iykykblog.workers.dev/screen' \
  -H 'content-type: application/json' \
  --data-raw '{"ccn":"015009"}'

# 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://nursing-home-screen.iykykblog.workers.dev/screen' \
  -H 'content-type: application/json' \
  --data-raw '{"ccn":"015009"}' \
  | 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 $0.08 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.08" });
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 $0.08 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fnursing-home-screen.iykykblog.workers.dev%2Fscreen&method=POST
const res = await pay("https://nursing-home-screen.iykykblog.workers.dev/screen", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "ccn": "015009"
  }),
});
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 $0.08 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.08"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://nursing-home-screen.iykykblog.workers.dev/screen",
        json={
            "ccn": "015009",
        },
    )
    print(res.status_code, res.text)