Nearest Buoy

{
  "asOf": "2026-10-12T01:09:33.561Z",
  "buoys": [
    {
      "buoy": "46237",
      "distanceKm": 3.3,
      "distanceNauticalMiles": 1.8,
      "latitude": 37.788,
      "longitude": -122.634,
      "name": "San Francisco Bar, CA  (142)",
      "owner": "SCRIPPS",
      "type": "buoy"
    },
    {
      "buoy": "ftpc1",
      "distanceKm": 11.8,
      "distanceNauticalMiles": 6.4,
      "latitude": 37.806,
      "longitude": -122.466,
      "name": "9414290 - San Francisco, CA",
      "owner": "NOS",
      "type": "fixed"
    }
  ],
  "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.",
  "lat": 37.8,
  "lon": -122.6,
  "notChecked": [
    "whether the station is reporting right now (use /buoy-now)",
    "similarity of conditions between the buoy and your spot",
    "…1 more"
  ],
  "reasons": [
    "Within 150 km."
  ],
  "source": "NOAA National Data Buoy Center",
  "sourceUrl": "https://www.ndbc.noaa.gov",
  "stationsConsidered": 894,
  "summary": "Nearest weather buoy: 46237 San Francisco Bar, CA  (142) (buoy), 3.3 km away.",
  "verdict": "FOUND"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://marine-conditions.x402tookit.com/nearest-buoy?lat=37.8&limit=3&lon=-122.6'

# 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://marine-conditions.x402tookit.com/nearest-buoy?lat=37.8&limit=3&lon=-122.6' \
  | 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%2Fmarine-conditions.x402tookit.com%2Fnearest-buoy
const res = await pay("https://marine-conditions.x402tookit.com/nearest-buoy?lat=37.8&limit=3&lon=-122.6");
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://marine-conditions.x402tookit.com/nearest-buoy?lat=37.8&limit=3&lon=-122.6")
    print(res.status_code, res.text)