Weather

{
  "current": {
    "apparent_temperature": 60.4,
    "humidity_pct": 78,
    "is_day": true,
    "precipitation": 0,
    "temperature": 62.1,
    "time": "2026-05-06T13:00",
    "weather_code": 3,
    "wind_direction_deg": 270,
    "wind_speed": 8.2
  },
  "daily": [
    {
      "date": "2026-05-06",
      "precipitation_mm": 0,
      "precipitation_probability_max": 5,
      "sunrise": "2026-05-06T06:08",
      "sunset": "2026-05-06T20:11",
      "temperature_max": 67.3,
      "temperature_min": 53.1,
      "uv_index_max": 7.5,
      "weather_code": 3
    }
  ],
  "location": {
    "elevation_m": 18,
    "lat": 37.7749,
    "lon": -122.4194,
    "timezone": "America/Los_Angeles"
  },
  "source": "https://open-meteo.com",
  "units": "imperial"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://x402.agentutility.ai/weather' \
  -H 'content-type: application/json' \
  --data-raw '{"forecast_days":3,"latitude":37.7749,"longitude":-122.4194,"units":"imperial"}'

# 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://x402.agentutility.ai/weather' \
  -H 'content-type: application/json' \
  --data-raw '{"forecast_days":3,"latitude":37.7749,"longitude":-122.4194,"units":"imperial"}' \
  | 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 $0.002 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%2Fx402.agentutility.ai%2Fweather&method=POST
const res = await pay("https://x402.agentutility.ai/weather", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "forecast_days": 3,
    "latitude": 37.7749,
    "longitude": -122.4194,
    "units": "imperial"
  }),
});
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 $0.002 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://x402.agentutility.ai/weather",
        json={
            "forecast_days": 3,
            "latitude": 37.7749,
            "longitude": -122.4194,
            "units": "imperial",
        },
    )
    print(res.status_code, res.text)