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Materials Optical Bandgap Fit

by Optical band-gap fit audit in AI models & inference

x402 APIPassing, checked 2 h ago

Evaluate supplied absorption observations under a declared band-gap model with fit-window sensitivity. No universal band-gap or integrated-device performance claim. New modular adapter: retained result recovery for 24 hours, minimal receipt metadata for 90 days. Existing live route unchanged.

POST
https://www.mahastrategies.com/api/v1/compute/materials/optical-bandgap-fit
Price
$0.109
per call in USDC
Uptime
100%
last 30 days
Response time
279 ms
989 ms slowest 5%
Last check
Passed
2 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed · Watch with other listings

How to call it

POST https://www.mahastrategies.com/api/v1/compute/materials/optical-bandgap-fit

Each call costs $0.109003 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

POST https://www.mahastrategies.com/api/v1/compute/materials/optical-bandgap-fit
content-type: application/json

{
  "absorptionPerM": [
    0.47140452079103173,
    0.5,
    0.4898979485566356,
    0.47140452079103173,
    0.45175395145262565
  ],
  "dataClass": "synthetic",
  "energyEV": [
    1.5,
    2,
    2.5,
    3,
    3.5
  ],
  "fitEndIndex": 4,
  "fitStartIndex": 0,
  "transition": "direct-allowed"
}

Parameters

ParameterTypeRequiredDescription
absorptionPerMarrayYes
dataClassstringYes One of: public, synthetic.
energyEVarrayYes
fitEndIndexintegerYes
fitStartIndexintegerYes
transitionstringYes One of: direct-allowed, indirect-allowed.

Example response

The provider's example. We can't check it without paying.

Example response, 42 lines
{
  "data": {
    "chargedAmount": "109003",
    "inputHash": "sha256:5305285dfc93d851efc37ee098ac8618f40a840979f84f44bc26b5388…",
    "limitations": [
      "Public or synthetic inputs only. Caller labels are declarations,…"
    ],
    "productId": "materials-optical-bandgap-fit",
    "result": {
      "findings": {
        "bandgapEV": 1,
        "fitWindowSensitivityEV": 0,
        "method": "Tauc linear extrapolation: (alpha*E)^2 direct allowed, ^0.5 indi…",
        "transformedFit": {
          "degreesOfFreedom": 3,
          "intercept": -1,
          "rSquared": 1,
          "residualStandardError": 3.45182366138e-16,
          "residuals": [
            3.33066907388e-16
          ],
          "slope": 1,
          "slopeStandardError": 2.18312497025e-16
        },
        "transition": "direct-allowed",
        "trimmedWindowBandgapEV": 1
      },
      "limitations": [
        "Public or synthetic research inputs only; no patient, personal g…"
      ],
      "methodVersion": "maha-science50/1.0.0",
      "numericPrecision": "IEEE754-double; finite outputs rounded to 12 significant digits"
    },
    "resultHash": "sha256:70bb729693e74665b92384a0fcab50936fc641ab81f861ac5512987f0…",
    "sourceContractAmount": "109001",
    "version": "maha-legacy-adapter/1"
  },
  "proof": {
    "settlement_id": "0x00000000000000000000000000000000000000000000000000000000000000…"
  },
  "success": true
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.109003.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://www.mahastrategies.com/api/v1/compute/materials/optical-bandgap-fit' \
  -H 'content-type: application/json' \
  --data-raw '{"absorptionPerM":[0.47140452079103173,0.5,0.4898979485566356,0.47140452079103173,0.45175395145262565],"dataClass":"synthetic","energyEV":[1.5,2,2.5,3,3.5],"fitEndIndex":4,"fitStartIndex":0,"transition":"direct-allowed"}'

# 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/materials/optical-bandgap-fit' \
  -H 'content-type: application/json' \
  --data-raw '{"absorptionPerM":[0.47140452079103173,0.5,0.4898979485566356,0.47140452079103173,0.45175395145262565],"dataClass":"synthetic","energyEV":[1.5,2,2.5,3,3.5],"fitEndIndex":4,"fitStartIndex":0,"transition":"direct-allowed"}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// 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 $0.109003 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.109003" });
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 $0.109003 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fwww.mahastrategies.com%2Fapi%2Fv1%2Fcompute%2Fmaterials%2Foptical-bandgap-fit&method=POST
const res = await pay("https://www.mahastrategies.com/api/v1/compute/materials/optical-bandgap-fit", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "absorptionPerM": [
      0.47140452079103173,
      0.5,
      0.4898979485566356,
      0.47140452079103173,
      0.45175395145262565
    ],
    "dataClass": "synthetic",
    "energyEV": [
      1.5,
      2,
      2.5,
      3,
      3.5
    ],
    "fitEndIndex": 4,
    "fitStartIndex": 0,
    "transition": "direct-allowed"
  }),
});
console.log(res.status, await res.text());
Python: pay and call
# 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 $0.109003 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.109003"})
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/materials/optical-bandgap-fit",
        json={
            "absorptionPerM": [
                0.47140452079103173,
                0.5,
                0.4898979485566356,
                0.47140452079103173,
                0.45175395145262565,
            ],
            "dataClass": "synthetic",
            "energyEV": [
                1.5,
                2,
                2.5,
                3,
                3.5,
            ],
            "fitEndIndex": 4,
            "fitStartIndex": 0,
            "transition": "direct-allowed",
        },
    )
    print(res.status_code, res.text)

Security scan

No findings

We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
2 h agoPassed402366 ms$0.109
7 h agoPassed402317 ms$0.109
12 h agoPassed402575 ms$0.109
17 h agoPassed402279 ms$0.109
21 h agoPassed402206 ms$0.109
Show 3 older checks
26 h agoPassed402254 ms$0.109
30 h agoPassed402238 ms$0.109
34 h agoPassed402989 ms$0.109