Linear regression (OLS) · Linear Regression

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/linear-regression", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "predict": [
      6,
      7
    ],
    "x": [
      1,
      2,
      3,
      4,
      5
    ],
    "y": [
      2.1,
      4,
      6.1,
      7.9,
      10.2
    ]
  }),
});
const data = await res.json();

curl -X POST \
  "https://agent402.tools/api/linear-regression" \
  -H "Content-Type: application/json" \
  -d '{"predict":[6,7],"x":[1,2,3,4,5],"y":[2.1,4,6.1,7.9,10.2]}' \
  -H "X-PAYMENT: <signed x402 payment>"

{
  "equation": "y = 2.01x + 0.03",
  "intercept": 0.03,
  "n": 5,
  "predictions": [
    {
      "x": 6,
      "y": 12.09
    },
    {
      "x": 7,
      "y": 14.1
    }
  ],
  "rSquared": 0.9997,
  "slope": 2.01
}