Polymer Measurements Condition Coverage Map

{
  "data": {
    "chargedAmount": "35186",
    "inputHash": "sha256:da2d095d956af90401e8cf2e334e33cecb40c5e41716677b7a1cca9e5…",
    "limitations": [
      "Public or synthetic nonpersonal metadata only; these are caller …"
    ],
    "productId": "polymer-measurements-condition-coverage-map",
    "result": {
      "authoritativeSourcesConsulted": false,
      "domainValidationEstablished": false,
      "findings": [],
      "method": "polymer-measurements-condition-coverage-map/1",
      "metrics": [
        {
          "key": "polymer-measurements-averages-derived",
          "recordId": "polymer-measurements",
          "value": "1"
        }
      ]
    },
    "resultHash": "sha256:8664e1b5cbd28e832c8381a6a5c9fd54e723b1f91a67efe3a1a4e999c…",
    "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/polymer-measurements/condition-coverage-map' \
  -H 'content-type: application/json' \
  --data-raw '{"bins":[{"count":1,"id":"b1","molarMass":100,"qualifier":"exact","unit":"grams-per-mol"},{"count":1,"id":"b2","molarMass":200,"qualifier":"exact","unit":"grams-per-mol"}],"dataClass":"synthetic","datasetRef":"dataset1","materialLotRef":"lot1","methodDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","nonpersonalMetadata":true,"revision":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","unit":"grams-per-mol"}'

# 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/polymer-measurements/condition-coverage-map' \
  -H 'content-type: application/json' \
  --data-raw '{"bins":[{"count":1,"id":"b1","molarMass":100,"qualifier":"exact","unit":"grams-per-mol"},{"count":1,"id":"b2","molarMass":200,"qualifier":"exact","unit":"grams-per-mol"}],"dataClass":"synthetic","datasetRef":"dataset1","materialLotRef":"lot1","methodDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","nonpersonalMetadata":true,"revision":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","unit":"grams-per-mol"}' \
  | 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 $0.035186 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.035186" });
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 $0.035186 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fwww.mahastrategies.com%2Fapi%2Fv1%2Fcompute%2Fpolymer-measurements%2Fcondition-coverage-map&method=POST
const res = await pay("https://www.mahastrategies.com/api/v1/compute/polymer-measurements/condition-coverage-map", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "bins": [
      {
        "count": 1,
        "id": "b1",
        "molarMass": 100,
        "qualifier": "exact",
        "unit": "grams-per-mol"
      },
      {
        "count": 1,
        "id": "b2",
        "molarMass": 200,
        "qualifier": "exact",
        "unit": "grams-per-mol"
      }
    ],
    "dataClass": "synthetic",
    "datasetRef": "dataset1",
    "materialLotRef": "lot1",
    "methodDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
    "nonpersonalMetadata": true,
    "revision": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
    "unit": "grams-per-mol"
  }),
});
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 $0.035186 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.035186"})
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/polymer-measurements/condition-coverage-map",
        json={
            "bins": [
                {
                    "count": 1,
                    "id": "b1",
                    "molarMass": 100,
                    "qualifier": "exact",
                    "unit": "grams-per-mol",
                },
                {
                    "count": 1,
                    "id": "b2",
                    "molarMass": 200,
                    "qualifier": "exact",
                    "unit": "grams-per-mol",
                },
            ],
            "dataClass": "synthetic",
            "datasetRef": "dataset1",
            "materialLotRef": "lot1",
            "methodDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
            "nonpersonalMetadata": True,
            "revision": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
            "unit": "grams-per-mol",
        },
    )
    print(res.status_code, res.text)