Spectrometry Records Condition Coverage Map

{
  "data": {
    "chargedAmount": "35174",
    "inputHash": "sha256:65e3ba8e8855b20fc06dab87cb762b5cbca13bfb61372ea759361209b…",
    "limitations": [
      "Public or synthetic nonpersonal metadata only; these are caller …"
    ],
    "productId": "spectrometry-records-condition-coverage-map",
    "result": {
      "authoritativeSourcesConsulted": false,
      "domainValidationEstablished": false,
      "findings": [],
      "method": "spectrometry-records-condition-coverage-map/1",
      "metrics": [
        {
          "key": "spectrometry-records-uniquely-covered-calibrations",
          "recordId": "spectrometry-records",
          "value": "1"
        }
      ]
    },
    "resultHash": "sha256:b7677204d5bbb8d37dd4811271bddbcda94d02430944bd954999556ce…",
    "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/compute/spectrometry-records/condition-coverage-map' \
  -H 'content-type: application/json' \
  --data-raw '{"assessedAt":"2026-01-01T00:00:00.000Z","calibrations":[{"calibrationRef":"cal1","capturedAt":"2026-01-01T00:00:00.000Z","id":"c1","instrumentRef":"instrument1","methodDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","revision":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","state":"valid","validUntil":"2026-02-01T00:00:00.000Z"}],"dataClass":"synthetic","instrumentRef":"instrument1","methodDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","nonpersonalMetadata":true,"requiredCalibrations":[{"calibrationRef":"cal1","id":"r1","revision":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"}]}'

# 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/compute/spectrometry-records/condition-coverage-map' \
  -H 'content-type: application/json' \
  --data-raw '{"assessedAt":"2026-01-01T00:00:00.000Z","calibrations":[{"calibrationRef":"cal1","capturedAt":"2026-01-01T00:00:00.000Z","id":"c1","instrumentRef":"instrument1","methodDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","revision":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","state":"valid","validUntil":"2026-02-01T00:00:00.000Z"}],"dataClass":"synthetic","instrumentRef":"instrument1","methodDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","nonpersonalMetadata":true,"requiredCalibrations":[{"calibrationRef":"cal1","id":"r1","revision":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"}]}' \
  | 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 $0.035174 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.035174" });
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 $0.035174 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fwww.mahastrategies.com%2Fapi%2Fv1%2Fcompute%2Fspectrometry-records%2Fcondition-coverage-map&method=POST
const res = await pay("https://www.mahastrategies.com/api/v1/compute/spectrometry-records/condition-coverage-map", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "assessedAt": "2026-01-01T00:00:00.000Z",
    "calibrations": [
      {
        "calibrationRef": "cal1",
        "capturedAt": "2026-01-01T00:00:00.000Z",
        "id": "c1",
        "instrumentRef": "instrument1",
        "methodDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
        "revision": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
        "state": "valid",
        "validUntil": "2026-02-01T00:00:00.000Z"
      }
    ],
    "dataClass": "synthetic",
    "instrumentRef": "instrument1",
    "methodDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
    "nonpersonalMetadata": true,
    "requiredCalibrations": [
      {
        "calibrationRef": "cal1",
        "id": "r1",
        "revision": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
      }
    ]
  }),
});
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 $0.035174 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.035174"})
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/compute/spectrometry-records/condition-coverage-map",
        json={
            "assessedAt": "2026-01-01T00:00:00.000Z",
            "calibrations": [
                {
                    "calibrationRef": "cal1",
                    "capturedAt": "2026-01-01T00:00:00.000Z",
                    "id": "c1",
                    "instrumentRef": "instrument1",
                    "methodDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
                    "revision": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
                    "state": "valid",
                    "validUntil": "2026-02-01T00:00:00.000Z",
                },
            ],
            "dataClass": "synthetic",
            "instrumentRef": "instrument1",
            "methodDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
            "nonpersonalMetadata": True,
            "requiredCalibrations": [
                {
                    "calibrationRef": "cal1",
                    "id": "r1",
                    "revision": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
                },
            ],
        },
    )
    print(res.status_code, res.text)