Procurement Notices Unit Label Consistency

{
  "data": {
    "chargedAmount": "12335",
    "inputHash": "sha256:3933079f9ee1f2e247656723399c7b9ea71607fd1c57e0d37a9976f51…",
    "limitations": [
      "Public or synthetic nonpersonal metadata only; these are caller …"
    ],
    "productId": "procurement-notices-unit-label-consistency",
    "result": {
      "authoritativeSourcesConsulted": false,
      "domainValidationEstablished": false,
      "findings": [],
      "method": "procurement-notices-unit-label-consistency/1",
      "metrics": [
        {
          "key": "procurement-notices-exact-compatible-amounts",
          "recordId": "procurement-notices",
          "value": "1"
        }
      ]
    },
    "resultHash": "sha256:71a298313fe8909331d81fcda15d1c8ab25d52e2c44c3901b12b66d4e…",
    "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/intel/procurement-notices/unit-label-consistency' \
  -H 'content-type: application/json' \
  --data-raw '{"buyerRef":"buyer-organization1","currency":"USD","dataClass":"synthetic","jurisdictionRef":"declared-jurisdiction1","measurements":[{"buyerRef":"buyer-organization1","currency":"USD","id":"money1","jurisdictionRef":"declared-jurisdiction1","minorUnitDigits":2,"noticeDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","noticeKind":"solicitation","noticeRef":"synthetic-notice1","noticeRevision":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","qualifier":"exact","unit":"minor-units","valueMinor":"100"}],"minorUnitDigits":2,"nonpersonalMetadata":true,"noticeDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","noticeKind":"solicitation","noticeRef":"synthetic-notice1","noticeRevision":"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/intel/procurement-notices/unit-label-consistency' \
  -H 'content-type: application/json' \
  --data-raw '{"buyerRef":"buyer-organization1","currency":"USD","dataClass":"synthetic","jurisdictionRef":"declared-jurisdiction1","measurements":[{"buyerRef":"buyer-organization1","currency":"USD","id":"money1","jurisdictionRef":"declared-jurisdiction1","minorUnitDigits":2,"noticeDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","noticeKind":"solicitation","noticeRef":"synthetic-notice1","noticeRevision":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","qualifier":"exact","unit":"minor-units","valueMinor":"100"}],"minorUnitDigits":2,"nonpersonalMetadata":true,"noticeDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","noticeKind":"solicitation","noticeRef":"synthetic-notice1","noticeRevision":"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 $0.012335 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.012335" });
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 $0.012335 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fwww.mahastrategies.com%2Fapi%2Fv1%2Fintel%2Fprocurement-notices%2Funit-label-consistency&method=POST
const res = await pay("https://www.mahastrategies.com/api/v1/intel/procurement-notices/unit-label-consistency", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "buyerRef": "buyer-organization1",
    "currency": "USD",
    "dataClass": "synthetic",
    "jurisdictionRef": "declared-jurisdiction1",
    "measurements": [
      {
        "buyerRef": "buyer-organization1",
        "currency": "USD",
        "id": "money1",
        "jurisdictionRef": "declared-jurisdiction1",
        "minorUnitDigits": 2,
        "noticeDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
        "noticeKind": "solicitation",
        "noticeRef": "synthetic-notice1",
        "noticeRevision": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
        "qualifier": "exact",
        "unit": "minor-units",
        "valueMinor": "100"
      }
    ],
    "minorUnitDigits": 2,
    "nonpersonalMetadata": true,
    "noticeDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
    "noticeKind": "solicitation",
    "noticeRef": "synthetic-notice1",
    "noticeRevision": "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 $0.012335 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.012335"})
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/intel/procurement-notices/unit-label-consistency",
        json={
            "buyerRef": "buyer-organization1",
            "currency": "USD",
            "dataClass": "synthetic",
            "jurisdictionRef": "declared-jurisdiction1",
            "measurements": [
                {
                    "buyerRef": "buyer-organization1",
                    "currency": "USD",
                    "id": "money1",
                    "jurisdictionRef": "declared-jurisdiction1",
                    "minorUnitDigits": 2,
                    "noticeDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
                    "noticeKind": "solicitation",
                    "noticeRef": "synthetic-notice1",
                    "noticeRevision": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
                    "qualifier": "exact",
                    "unit": "minor-units",
                    "valueMinor": "100",
                },
            ],
            "minorUnitDigits": 2,
            "nonpersonalMetadata": True,
            "noticeDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
            "noticeKind": "solicitation",
            "noticeRef": "synthetic-notice1",
            "noticeRevision": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
        },
    )
    print(res.status_code, res.text)