Forecast (simple exponential · Forecast SES

import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);

const res = await fetchWithPay("https://agent402.tools/api/forecast-ses", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "alpha": 0.3,
    "horizon": 3,
    "values": [
      42,
      44,
      41,
      43,
      45,
      44,
      46,
      45,
      47,
      46
    ]
  }),
});
const data = await res.json();

curl -X POST \
  "https://agent402.tools/api/forecast-ses" \
  -H "Content-Type: application/json" \
  -d '{"alpha":0.3,"horizon":3,"values":[42,44,41,43,45,44,46,45,47,46]}' \
  -H "X-PAYMENT: <signed x402 payment>"

{
  "alpha": 0.3,
  "forecast": [
    {
      "lower95": 42.7805,
      "point": 45.4431,
      "step": 1,
      "upper95": 48.1057
    },
    {
      "lower95": 42.6633,
      "point": 45.4431,
      "step": 2,
      "upper95": 48.2229
    },
    {
      "lower95": 42.5508,
      "point": 45.4431,
      "step": 3,
      "upper95": 48.3354
    }
  ],
  "horizon": 3,
  "method": "ses",
  "n": 10
}