Screen

{
  "facilities": [
    {
      "ccn": "210009",
      "city": "BALTIMORE",
      "emergency_services": true,
      "facility_name": "JOHNS HOPKINS HOSPITAL, THE",
      "hospital_type": "Acute Care Hospitals",
      "measure_groups": {
        "mortality": {
          "measures_better_than_national": 5,
          "measures_no_different_than_national": 3,
          "measures_reported": 8,
          "measures_worse_than_national": 0,
          "verdict": "Above the national benchmark on balance"
        },
        "patient_experience": {
          "completed_surveys": 3167,
          "hcahps_summary_star": 4,
          "measures_reported": 15,
          "response_rate_pct": 17,
          "verdict": "Above average patient experience (4 of 5 HCAHPS summary stars)"
        },
        "readmission": {
          "measures_better_than_national": 1,
          "measures_no_different_than_national": 6,
          "measures_reported": 10,
          "measures_worse_than_national": 3,
          "verdict": "Below the national benchmark on balance"
        },
        "safety_of_care": {
          "measures_better_than_national": 4,
          "measures_no_different_than_national": 2,
          "measures_reported": 7,
          "measures_worse_than_national": 1,
          "verdict": "Above the national benchmark on balance"
        },
        "timely_and_effective_care": {
          "group_measure_count": 10,
          "measures_reported": 8,
          "measures_with_scores": 16,
          "verdict": "CMS publishes no single timely & effective care group rating; count reflects reported process measures with scores"
        }
      },
      "overall_star_rating": 5,
      "ownership": "Voluntary non-profit - Private",
      "state": "MD",
      "verdict": "Top-rated quality: 5 of 5 stars overall (CMS). Readmission measures trend below the national benchmark (3 worse vs 1 better). Patient experience (HCAHPS) summary rating: 4 of 5 stars."
    }
  ],
  "found": true,
  "query": {
    "ccn": "210009"
  }
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://hospital-screen.iykykblog.workers.dev/screen' \
  -H 'content-type: application/json' \
  --data-raw '{"ccn":"210009"}'

# 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://hospital-screen.iykykblog.workers.dev/screen' \
  -H 'content-type: application/json' \
  --data-raw '{"ccn":"210009"}' \
  | 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%2Fhospital-screen.iykykblog.workers.dev%2Fscreen&method=POST
const res = await pay("https://hospital-screen.iykykblog.workers.dev/screen", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "ccn": "210009"
  }),
});
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://hospital-screen.iykykblog.workers.dev/screen",
        json={
            "ccn": "210009",
        },
    )
    print(res.status_code, res.text)