Architecture Area Program

{
  "data": {
    "chargedAmount": "10014",
    "inputHash": "sha256:d0157deff019a4041b406aec2af740b5cdc268caafef6f0a78ae93b1f…",
    "limitations": [
      "Public or synthetic inputs only. Caller labels are declarations,…"
    ],
    "productId": "area-program-check",
    "result": {
      "approvalGranted": false,
      "basis": "synthetic",
      "limitations": [
        "All areas use caller-declared m2; exact fractions are numerator/…"
      ],
      "method": "area-program-check/1",
      "rows": [
        {
          "id": "ground",
          "metrics": [
            {
              "name": "grossArea",
              "value": "1000"
            }
          ],
          "relatedIds": [],
          "status": "estimated"
        }
      ],
      "totals": [
        {
          "name": "grossArea",
          "value": "1800"
        }
      ]
    },
    "resultHash": "sha256:baabd696eb67b3e525165039006c82b12cbe3014ec195715784bd20db…",
    "sourceContractAmount": "39000",
    "version": "maha-legacy-adapter/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/architecture/area-program' \
  -H 'content-type: application/json' \
  --data-raw '{"areaUnit":"m2","dataClass":"synthetic","floors":[{"assignableRatioBps":7500,"grossArea":1000,"id":"ground"},{"assignableRatioBps":8000,"grossArea":800,"id":"upper"}]}'

# 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/architecture/area-program' \
  -H 'content-type: application/json' \
  --data-raw '{"areaUnit":"m2","dataClass":"synthetic","floors":[{"assignableRatioBps":7500,"grossArea":1000,"id":"ground"},{"assignableRatioBps":8000,"grossArea":800,"id":"upper"}]}' \
  | 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 $0.010014 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.010014" });
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 $0.010014 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fwww.mahastrategies.com%2Fapi%2Fv1%2Fcompute%2Farchitecture%2Farea-program&method=POST
const res = await pay("https://www.mahastrategies.com/api/v1/compute/architecture/area-program", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "areaUnit": "m2",
    "dataClass": "synthetic",
    "floors": [
      {
        "assignableRatioBps": 7500,
        "grossArea": 1000,
        "id": "ground"
      },
      {
        "assignableRatioBps": 8000,
        "grossArea": 800,
        "id": "upper"
      }
    ]
  }),
});
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 $0.010014 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.010014"})
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/architecture/area-program",
        json={
            "areaUnit": "m2",
            "dataClass": "synthetic",
            "floors": [
                {
                    "assignableRatioBps": 7500,
                    "grossArea": 1000,
                    "id": "ground",
                },
                {
                    "assignableRatioBps": 8000,
                    "grossArea": 800,
                    "id": "upper",
                },
            ],
        },
    )
    print(res.status_code, res.text)