Aviation Taf

{
  "issued_at": "2026-10-12T23:39:00.000Z",
  "name": "New York/JF Kennedy Intl",
  "periods": [
    {
      "ceiling_ft": 25000,
      "change": null,
      "clouds": [
        {
          "base_ft": 4000,
          "cover": "SCT"
        },
        {
          "base_ft": 25000,
          "cover": "BKN"
        }
      ],
      "flight_category": "VFR",
      "from": "2026-10-13T00:00:00.000Z",
      "probability_pct": null,
      "to": "2026-10-13T01:00:00.000Z",
      "visibility_sm": 6,
      "weather": null,
      "wind_direction_deg": 320,
      "wind_gust_kt": null,
      "wind_speed_kt": 12
    },
    {
      "ceiling_ft": 25000,
      "change": "FM",
      "clouds": [
        {
          "base_ft": 4000,
          "cover": "SCT"
        },
        {
          "base_ft": 25000,
          "cover": "BKN"
        }
      ],
      "flight_category": "VFR",
      "from": "2026-10-13T01:00:00.000Z",
      "probability_pct": null,
      "to": "2026-10-13T04:00:00.000Z",
      "visibility_sm": 6,
      "weather": null,
      "wind_direction_deg": 310,
      "wind_gust_kt": null,
      "wind_speed_kt": 8
    },
    {
      "ceiling_ft": 25000,
      "change": "FM",
      "clouds": [
        {
          "base_ft": 10000,
          "cover": "SCT"
        },
        {
          "base_ft": 25000,
          "cover": "BKN"
        }
      ],
      "flight_category": "VFR",
      "from": "2026-10-13T04:00:00.000Z",
      "probability_pct": null,
      "to": "2026-10-13T13:00:00.000Z",
      "visibility_sm": 6,
      "weather": null,
      "wind_direction_deg": null,
      "wind_gust_kt": null,
      "wind_speed_kt": 3
    }
  ],
  "raw": "TAF KJFK 122339Z 1300/1406 32012KT P6SM SCT040 BKN250 FM130100 31008KT P6SM SCT040 BKN250 FM130400 VRB03KT P6SM SCT100 BKN250 FM131300 14007KT P6SM SCT025 BKN200 FM131800 18010KT P6SM SCT040 BKN150 FM132200 21012KT P6SM SCT040 SCT120 BKN250",
  "source": "NOAA Aviation Weather Center",
  "station": "KJFK",
  "valid_from": "2026-10-13T00:00:00.000Z",
  "valid_to": "2026-10-14T06:00:00.000Z",
  "worst_flight_category": "VFR"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://saylorinnovations.com/api/aviation/taf?id=KJFK'

# 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/aviation/taf?id=KJFK' \
  | 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%2Faviation%2Ftaf
const res = await pay("https://saylorinnovations.com/api/aviation/taf?id=KJFK");
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/aviation/taf?id=KJFK")
    print(res.status_code, res.text)