Wind Components

{
  "asOf": "2026-10-11T14:44:09.628Z",
  "crosswindFrom": "left",
  "crosswindKt": 9,
  "crosswindLimitKt": 15,
  "degraded": false,
  "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
  "gustCrosswindKt": 13,
  "gustHeadwindKt": 22.52,
  "headingDeg": 270,
  "headwindKt": 15.59,
  "limitMarginKt": 2,
  "notChecked": [
    "the true versus magnetic reference: wind reports (METAR) are in true degrees except tower reports, runway headings are magnetic, so convert before comparing",
    "gust factors, wind shear and turbulence near the ground",
    "…2 more"
  ],
  "reasons": [
    "Headwind = speed x cos(angle between wind and heading); crosswind = speed x sin(angle).",
    "A tailwind component lengthens landing and takeoff distances."
  ],
  "relativeWindAngleDeg": -30,
  "source": "computed locally",
  "summary": "Wind 240 at 18 kt on heading 270: 15.6 kt headwind and 9 kt crosswind from the left. Gusting 26: 13 kt crosswind. Within your 15 kt limit (margin 2 kt).",
  "tailwindKt": 0,
  "verdict": "HEADWIND",
  "windFromDeg": 240,
  "windKt": 18
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://aviation-calc.x402tookit.com/wind-components?crosswindLimitKt=15&gustKt=26&runway=27&windFromDeg=240&windKt=18'

# 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://aviation-calc.x402tookit.com/wind-components?crosswindLimitKt=15&gustKt=26&runway=27&windFromDeg=240&windKt=18' \
  | 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 $0.02 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.02" });
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 $0.02 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Faviation-calc.x402tookit.com%2Fwind-components
const res = await pay("https://aviation-calc.x402tookit.com/wind-components?crosswindLimitKt=15&gustKt=26&runway=27&windFromDeg=240&windKt=18");
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 $0.02 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.02"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://aviation-calc.x402tookit.com/wind-components?crosswindLimitKt=15&gustKt=26&runway=27&windFromDeg=240&windKt=18")
    print(res.status_code, res.text)