Device 510k

{
  "clearances": [
    {
      "applicant": "Medtronic, Inc.",
      "applicantCity": "Plymouth",
      "applicantCountry": "US",
      "applicantState": "MN",
      "classificationName": "Stents, Drains And Dilators For The Biliary Ducts",
      "clearanceType": "Traditional",
      "dateReceived": "2026-06-02",
      "decision": "Substantially Equivalent",
      "decisionCode": "SESE",
      "decisionDate": "2026-09-30",
      "deviceClass": "2",
      "deviceName": "Example Device",
      "kNumber": "K251234",
      "medicalSpecialty": "Gastroenterology, Urology",
      "productCode": "FGE",
      "regulationNumber": "876.5010",
      "statementOrSummary": "Summary",
      "thirdPartyReview": false,
      "url": "https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm?ID=K251234"
    }
  ],
  "complete": false,
  "count": 1,
  "disclaimer": "openFDA data is unvalidated and is not medical advice; do not rely on it to make decisions regarding medical care.",
  "matched": 1587,
  "query": {
    "applicant": "medtronic",
    "deviceName": null,
    "kNumber": null,
    "productCode": null
  },
  "returned": 1,
  "source": "api.fda.gov (openFDA device 510(k), public domain)",
  "truncated": true
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://agent402.tools/api/device-510k?applicant=medtronic&limit=5'

# 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://agent402.tools/api/device-510k?applicant=medtronic&limit=5' \
  | 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 $0.004 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.004" });
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 $0.004 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fagent402.tools%2Fapi%2Fdevice-510k
const res = await pay("https://agent402.tools/api/device-510k?applicant=medtronic&limit=5");
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 $0.004 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.004"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://agent402.tools/api/device-510k?applicant=medtronic&limit=5")
    print(res.status_code, res.text)