Calibration Court · Calibrate Labels

Paid (x402, USDC on Base). Fit isotonic calibration on YOUR labelled outcomes ({p,y} pairs) and recalibrate the given probabilities. Statele

price

0.050 USDC

rail

Base

facilitator

OMNIGATE

method

POST

endpoint https://mcp-x402.onrender.com/gate/calibration-court/api/v1/calibrate-labels

payTo 0x5bbd32e0478e49a7540ef2d760e0b0f9aa6328b2

asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

indexed 2026-10-25T20:10:49.000Z

Live 402 challenge

Hits the real endpoint without paying and shows exactly what it demands. Nothing is charged.

Pay from your agent

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

const signer = privateKeyToAccount(process.env.BUYER_PRIVATE_KEY);
const pay = wrapFetchWithPayment(fetch, { schemes: [{ network: "eip155:8453", client: new ExactEvmScheme(signer) }] });

const res = await pay("https://mcp-x402.onrender.com/gate/calibration-court/api/v1/calibrate-labels", { method: "POST", headers: { "content-type": "application/json" }, body: JSON.stringify([ { "p": 0.9, "y": 1 }, { "p": 0.2, "y": 0 } ]) });
console.log(await res.json(), res.headers.get("PAYMENT-RESPONSE"));

Example input

[
  {
    "p": 0.9,
    "y": 1
  },
  {
    "p": 0.2,
    "y": 0
  }
]

Example output

{
  "sample": {
    "n": 250,
    "status": "ok",
    "base_rate": 0.42,
    "brier": 0.18,
    "ece": 0.03
  },
  "results": [
    {
      "p_raw": 0.65,
      "p_calibrated": 0.57,
      "ci95": [
        0.5,
        0.64
      ],
      "support_n": 48,
      "sample_n": 250,
      "status": "ok"
    }
  ],
  "note": "Calibration is fitted on the supplied labelled examples only and does not transfer to other distributions."
}