Medical Device Clearances

{
  "clearances": [
    {
      "applicant": "Shenzhen Lifetech Cardio Medical Electronics Co., Ltd.",
      "clearance_type": "Special",
      "country": "CN",
      "decision": "Substantially Equivalent",
      "decision_date": "2024-01-07",
      "device": "Lifetech Cardio Temporary Pacemaker",
      "device_class": "2",
      "k_number": "K232721",
      "panel": "Cardiovascular",
      "product_code": "DTE",
      "received": "2023-09-05"
    },
    {
      "applicant": "Ncs Lab Srl",
      "clearance_type": "Traditional",
      "country": "IT",
      "decision": "Substantially Equivalent",
      "decision_date": "2021-08-24",
      "device": "Shoulder Pacemaker",
      "device_class": "2",
      "k_number": "K210674",
      "panel": "Physical Medicine",
      "product_code": "IPF",
      "received": "2021-03-05"
    },
    {
      "applicant": "Shenzhen Lifetech Cardio Medical Electronics Co., Ltd.",
      "clearance_type": "Traditional",
      "country": "CN",
      "decision": "Substantially Equivalent",
      "decision_date": "2019-02-28",
      "device": "Lifetech Cardio Model 8301 Temporary Pacemaker",
      "device_class": "2",
      "k_number": "K182839",
      "panel": "Cardiovascular",
      "product_code": "DTE",
      "received": "2018-10-09"
    }
  ],
  "query": {
    "applicant": null,
    "device": "pacemaker"
  },
  "returned": 3,
  "source": "FDA 510(k) premarket notifications via openFDA",
  "total_clearances": 185
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://saylorinnovations.com/api/medical/device-clearances?limit=5&name=pacemaker'

# 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 - 'https://saylorinnovations.com/api/medical/device-clearances?limit=5&name=pacemaker' \
  | 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%2Fsaylorinnovations.com%2Fapi%2Fmedical%2Fdevice-clearances
const res = await pay("https://saylorinnovations.com/api/medical/device-clearances?limit=5&name=pacemaker");
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.get("https://saylorinnovations.com/api/medical/device-clearances?limit=5&name=pacemaker")
    print(res.status_code, res.text)