Micro Inspection Tolerance Check

{
  "amountBaseUnits": "29000",
  "boundaries": [
    "Public or synthetic inputs only. Caller labels are declarations,…"
  ],
  "inputDigest": "sha256:a2969fabb5b74a743f89a1d014975bd68dc5a64238519cd5e4dde9deb…",
  "offerId": "inspection-tolerance-check",
  "receiptDigest": "sha256:75a7781d6940247942e692a3f2ed9edc296c12f1b2ab24217894644c5…",
  "result": {
    "approvalGranted": false,
    "basis": "synthetic",
    "limitations": [
      "Inclusive tolerance boundaries; overlapping uncertainty interval…"
    ],
    "method": "inspection-tolerance-check/1",
    "rows": [
      {
        "id": "within",
        "metrics": [
          {
            "name": "lowerMm",
            "value": "1"
          }
        ],
        "relatedIds": [],
        "status": "pass"
      }
    ],
    "totals": [
      {
        "name": "passCount",
        "value": "1"
      }
    ]
  },
  "version": "maha-microproducts/0.1"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://www.mahastrategies.com/api/v1/micro/inspection-tolerance-check' \
  -H 'content-type: application/json' \
  --data-raw '{"dataClass":"synthetic","measurements":[{"id":"within","offsetMm":3,"toleranceMm":5,"uncertaintyHalfWidthMm":2},{"id":"overlap","offsetMm":5,"toleranceMm":5,"uncertaintyHalfWidthMm":2},{"id":"outside","offsetMm":-8,"toleranceMm":5,"uncertaintyHalfWidthMm":2}]}'

# 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/micro/inspection-tolerance-check' \
  -H 'content-type: application/json' \
  --data-raw '{"dataClass":"synthetic","measurements":[{"id":"within","offsetMm":3,"toleranceMm":5,"uncertaintyHalfWidthMm":2},{"id":"overlap","offsetMm":5,"toleranceMm":5,"uncertaintyHalfWidthMm":2},{"id":"outside","offsetMm":-8,"toleranceMm":5,"uncertaintyHalfWidthMm":2}]}' \
  | 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 $0.029 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.029" });
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 $0.029 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fwww.mahastrategies.com%2Fapi%2Fv1%2Fmicro%2Finspection-tolerance-check&method=POST
const res = await pay("https://www.mahastrategies.com/api/v1/micro/inspection-tolerance-check", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "dataClass": "synthetic",
    "measurements": [
      {
        "id": "within",
        "offsetMm": 3,
        "toleranceMm": 5,
        "uncertaintyHalfWidthMm": 2
      },
      {
        "id": "overlap",
        "offsetMm": 5,
        "toleranceMm": 5,
        "uncertaintyHalfWidthMm": 2
      },
      {
        "id": "outside",
        "offsetMm": -8,
        "toleranceMm": 5,
        "uncertaintyHalfWidthMm": 2
      }
    ]
  }),
});
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 $0.029 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.029"})
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/micro/inspection-tolerance-check",
        json={
            "dataClass": "synthetic",
            "measurements": [
                {
                    "id": "within",
                    "offsetMm": 3,
                    "toleranceMm": 5,
                    "uncertaintyHalfWidthMm": 2,
                },
                {
                    "id": "overlap",
                    "offsetMm": 5,
                    "toleranceMm": 5,
                    "uncertaintyHalfWidthMm": 2,
                },
                {
                    "id": "outside",
                    "offsetMm": -8,
                    "toleranceMm": 5,
                    "uncertaintyHalfWidthMm": 2,
                },
            ],
        },
    )
    print(res.status_code, res.text)