ToolVet
16trust / 100

Tropical Cyclones

by Vextorium in Weather & location

x402 APIFailing, checked 4 h ago

Active tropical cyclones in the Atlantic and eastern/central Pacific from the US National Hurricane Center: name, type (hurricane, storm...), max wind, pressure, position, movement and links to the official advisory and track.

POST https://api.vextorium.com/v1/tropical-cyclones

Last 30 days

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Status and outage history · Atom feed

Uptime
0.0%
Response time
- typical, - slowest 5%
Last check
4 h ago: Amount "0.002" is not in atomic token units
Next check
any minute now

How to call it

POST https://api.vextorium.com/v1/tropical-cyclones

Each call costs $0.002 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

POST https://api.vextorium.com/v1/tropical-cyclones
content-type: application/json

{}

Example response

The provider's example. We can't check it without paying.

Example response, 35 lines
{
  "assets": 2,
  "cyclones": [
    {
      "id": "ep182026",
      "lat": 19.3,
      "lon": -111.1,
      "max_wind_kmh": 167,
      "max_wind_knots": 90,
      "movement": "265° a 5 nudos",
      "name": "Rachel",
      "notice": "https://www.nhc.noaa.gov/text/MIATCPEP3.shtml",
      "pressure_mb": "963",
      "track": "https://www.nhc.noaa.gov/graphics_ep3.shtml",
      "type": "hurricane",
      "updated": "2026-10-02T21:00:00.000Z"
    },
    {
      "id": "ep152026",
      "lat": 23.5,
      "lon": -168.3,
      "max_wind_kmh": 120,
      "max_wind_knots": 65,
      "movement": "285° a 10 nudos",
      "name": "Nolo",
      "notice": "https://www.nhc.noaa.gov/text/HFOTCPCP2.shtml",
      "pressure_mb": "984",
      "track": "https://www.nhc.noaa.gov/graphics_cp2.shtml",
      "type": "hurricane",
      "updated": "2026-10-03T00:00:00.000Z"
    }
  ],
  "note": "Covers the Atlantic and eastern/central Pacific; for other basins use disaster-alerts (GDACS).",
  "source": "NOAA National Hurricane Center (public domain)"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.002.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.vextorium.com/v1/tropical-cyclones' \
  -H 'content-type: application/json' \
  --data-raw '{}'

# 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 - -X POST 'https://api.vextorium.com/v1/tropical-cyclones' \
  -H 'content-type: application/json' \
  --data-raw '{}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// 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 $0.002 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.002" });
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 $0.002 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.vextorium.com%2Fv1%2Ftropical-cyclones&method=POST
const res = await pay("https://api.vextorium.com/v1/tropical-cyclones", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({}),
});
console.log(res.status, await res.text());
Python: pay and call
# 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 $0.002 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.002"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.vextorium.com/v1/tropical-cyclones",
        json={},
    )
    print(res.status_code, res.text)

Security scan

  • No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
4 h agoAmount "0.002" is not in atomic token units402243 ms$0.002
8 h agoAmount "0.002" is not in atomic token units40288 ms$0.002
13 h agoAmount "0.002" is not in atomic token units402294 ms$0.002
17 h agoAmount "0.002" is not in atomic token units40285 ms$0.002
21 h agoAmount "0.002" is not in atomic token units40287 ms$0.002
26 h agoAmount "0.002" is not in atomic token units40288 ms$0.002
30 h agoAmount "0.002" is not in atomic token units402221 ms$0.002
34 h agoAmount "0.002" is not in atomic token units402283 ms$0.002
38 h agoAmount "0.002" is not in atomic token units40283 ms$0.002
42 h agoAmount "0.002" is not in atomic token units40284 ms$0.002
46 h agoAmount "0.002" is not in atomic token units40295 ms$0.002
2 days agoAmount "0.002" is not in atomic token units40283 ms$0.002
2 days agoAmount "0.002" is not in atomic token units40284 ms$0.002
2 days agoAmount "0.002" is not in atomic token units402332 ms$0.002
3 days agoAmount "0.002" is not in atomic token units40283 ms$0.002