Weather Alerts

{
  "alerts": [
    {
      "area": "Owens Valley North",
      "event": "Freeze Warning",
      "expires": "2026-10-14T08:00:00-07:00",
      "headline": "Freeze Warning issued October 13 at 11:30PM PDT until October 14 at 8:00AM PDT by NWS Las Vegas NV",
      "instruction": "Take steps now to protect tender plants from the cold.",
      "onset": "2026-10-14T00:00:00-07:00",
      "severity": "Severe",
      "urgency": "Expected"
    },
    {
      "area": "Lake Havasu and Fort Mohave; Lake Mohave - AZ side; Eastern Mojave Desert, Including the Mojave National Preserve; Cadiz Basin; San Bernardino County-Upper Colorado River Valley; Southern Clark County; Lake Mohave - NV side",
      "event": "Wind Advisory",
      "expires": "2026-10-14T08:00:00-07:00",
      "headline": "Wind Advisory issued October 13 at 11:30PM PDT until October 16 at 11:00AM PDT by NWS Las Vegas NV",
      "instruction": "Winds this strong can make driving difficult, especially for high\nprofile vehicles. Use extra caution.\n\nStrong winds and rough waves on area lakes will create hazardous\nconditions for small craft.",
      "onset": "2026-10-15T08:00:00-07:00",
      "severity": "Moderate",
      "urgency": "Expected"
    },
    {
      "area": "Southwestern Humboldt; Southeastern Interior Humboldt; Southern Trinity; Northwestern Interior Mendocino; Northeastern Interior Mendocino; Northern Lake; Northwestern and Central Trinity; Northeastern Trinity; Eastern Lake",
      "event": "Frost Advisory",
      "expires": "2026-10-14T06:00:00-07:00",
      "headline": "Frost Advisory issued October 13 at 9:57PM PDT until October 14 at 8:00AM PDT by NWS Eureka CA",
      "instruction": "Take steps now to protect tender plants from the cold.",
      "onset": "2026-10-14T01:00:00-07:00",
      "severity": "Minor",
      "urgency": "Expected"
    }
  ],
  "checkedAt": "2026-10-14T07:00:45.426Z",
  "count": 20,
  "query": "area=CA",
  "source": "https://api.weather.gov/alerts/active (NWS, public domain)"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.sitecheck-api.workers.dev/api/weather/alerts?state=CA'

# 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://api.sitecheck-api.workers.dev/api/weather/alerts?state=CA' \
  | 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 $0.001 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.001" });
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 $0.001 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.sitecheck-api.workers.dev%2Fapi%2Fweather%2Falerts
const res = await pay("https://api.sitecheck-api.workers.dev/api/weather/alerts?state=CA");
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 $0.001 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.001"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.sitecheck-api.workers.dev/api/weather/alerts?state=CA")
    print(res.status_code, res.text)