Snow Snowpack

{
  "count": 5,
  "found": true,
  "lat": 39.64,
  "lon": -106.37,
  "note": "Daily station observations; percent-of-median values use the 1991-2020 median.",
  "retrieved_at": "2026-09-30T00:00:00.000Z",
  "source": "USDA NRCS SNOTEL",
  "source_url": "https://wcc.sc.egov.usda.gov/",
  "stations": [
    {
      "air_temp_f": 22,
      "date": "2026-02-01",
      "distance_km": 3.1,
      "elevation_ft": 10300,
      "precip_percent_of_median": 95,
      "snow_depth_in": 48,
      "snow_water_equivalent_in": 14.2,
      "state": "CO",
      "station": "Vail Mountain",
      "swe_change_7d_in": 1.1,
      "swe_percent_of_median": 91,
      "water_year_precip_in": 18.4
    }
  ],
  "units": "inches and degrees Fahrenheit"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://saylorinnovations.com/api/snow/snowpack?lat=39.64&lon=-106.37'

# 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/snow/snowpack?lat=39.64&lon=-106.37' \
  | 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%2Fsnow%2Fsnowpack
const res = await pay("https://saylorinnovations.com/api/snow/snowpack?lat=39.64&lon=-106.37");
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/snow/snowpack?lat=39.64&lon=-106.37")
    print(res.status_code, res.text)