Quantum Calibration Age

{
  "data": {
    "chargedAmount": "24900",
    "inputHash": "sha256:a9e298b0ed056b257ec76fa635d3d062316907d4e66ad218018e6b7c4…",
    "limitations": [
      "Public or synthetic nonpersonal metadata only; these are caller …"
    ],
    "productId": "quantum-calibration-age-report",
    "result": {
      "authoritativeSourcesConsulted": false,
      "domainValidationEstablished": false,
      "findings": [],
      "method": "quantum-calibration-age-report/1",
      "metrics": [
        {
          "key": "age-seconds",
          "recordId": "c1",
          "value": "86400"
        }
      ]
    },
    "resultHash": "sha256:9c6a13c11ea45ac21cdd2a17d34e6461707fbda8a8e7148a2b58956bd…",
    "version": "maha-typed-metadata-audit/1"
  },
  "proof": {
    "settlement_id": "0x00000000000000000000000000000000000000000000000000000000000000…"
  },
  "success": true
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://www.mahastrategies.com/api/v1/verify/quantum/calibration-age' \
  -H 'content-type: application/json' \
  --data-raw '{"assessedAt":"2026-01-02T00:00:00.000Z","calibrations":[{"configurationDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","expectedConfigurationDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","id":"c1","observedAt":"2026-01-01T00:00:00.000Z"}],"dataClass":"synthetic","maximumAgeSeconds":90000,"nonpersonalMetadata":true}'

# 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://www.mahastrategies.com/api/v1/verify/quantum/calibration-age' \
  -H 'content-type: application/json' \
  --data-raw '{"assessedAt":"2026-01-02T00:00:00.000Z","calibrations":[{"configurationDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","expectedConfigurationDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","id":"c1","observedAt":"2026-01-01T00:00:00.000Z"}],"dataClass":"synthetic","maximumAgeSeconds":90000,"nonpersonalMetadata":true}' \
  | 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 $0.0249 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.0249" });
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 $0.0249 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fwww.mahastrategies.com%2Fapi%2Fv1%2Fverify%2Fquantum%2Fcalibration-age&method=POST
const res = await pay("https://www.mahastrategies.com/api/v1/verify/quantum/calibration-age", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "assessedAt": "2026-01-02T00:00:00.000Z",
    "calibrations": [
      {
        "configurationDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
        "expectedConfigurationDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
        "id": "c1",
        "observedAt": "2026-01-01T00:00:00.000Z"
      }
    ],
    "dataClass": "synthetic",
    "maximumAgeSeconds": 90000,
    "nonpersonalMetadata": true
  }),
});
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 $0.0249 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.0249"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://www.mahastrategies.com/api/v1/verify/quantum/calibration-age",
        json={
            "assessedAt": "2026-01-02T00:00:00.000Z",
            "calibrations": [
                {
                    "configurationDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
                    "expectedConfigurationDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
                    "id": "c1",
                    "observedAt": "2026-01-01T00:00:00.000Z",
                },
            ],
            "dataClass": "synthetic",
            "maximumAgeSeconds": 90000,
            "nonpersonalMetadata": True,
        },
    )
    print(res.status_code, res.text)