Payments Price Units

{
  "data": {
    "inputHash": "sha256:cd5bdc8667350a111288d2f416ab526703996803bfe6f414ce4bea9d9…",
    "limitations": [
      "Schema and integrity checks do not certify scientific truth, com…"
    ],
    "productId": "catalogue-price-unit-audit",
    "receiptDigest": "sha256:7b2d1c25dbb9541a3335d642a02a125ddfec5ea3487eac12b6772b4f4…",
    "result": {
      "boundary": "Checks supplied metadata and exact token-unit arithmetic only. N…",
      "decimalsAssumedFromSymbol": false,
      "paymentsMade": 0,
      "quotes": [
        {
          "amountBaseUnits": "10000",
          "asset": "0x1111111111111111111111111111111111111111",
          "decimals": null,
          "id": "quote",
          "independentlyVerifiedThisCall": false,
          "metadataBasis": null,
          "metadataObservedAt": null,
          "metadataSource": null,
          "network": "eip155:8453",
          "status": "unknown_asset_decimals",
          "tokenAmount": null,
          "usdPrice": null
        }
      ],
      "unknownCount": 1,
      "usdPegVerified": false
    },
    "resultHash": "sha256:db7ca19e6bf5779bf420edccdcf1957a877f8572d4b891a45a79f3f65…",
    "version": "maha-workflow/1.0.0"
  },
  "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/verify/payments/price-units' \
  -H 'content-type: application/json' \
  --data-raw '{"assetMetadata":[],"dataClass":"synthetic","quotes":[{"amount":"10000","asset":"0x1111111111111111111111111111111111111111","id":"quote","network":"eip155:8453"}]}'

# 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/verify/payments/price-units' \
  -H 'content-type: application/json' \
  --data-raw '{"assetMetadata":[],"dataClass":"synthetic","quotes":[{"amount":"10000","asset":"0x1111111111111111111111111111111111111111","id":"quote","network":"eip155:8453"}]}' \
  | 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 $0.0119 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.0119" });
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 $0.0119 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fwww.mahastrategies.com%2Fapi%2Fv1%2Fverify%2Fpayments%2Fprice-units&method=POST
const res = await pay("https://www.mahastrategies.com/api/v1/verify/payments/price-units", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "assetMetadata": [],
    "dataClass": "synthetic",
    "quotes": [
      {
        "amount": "10000",
        "asset": "0x1111111111111111111111111111111111111111",
        "id": "quote",
        "network": "eip155:8453"
      }
    ]
  }),
});
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 $0.0119 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.0119"})
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/verify/payments/price-units",
        json={
            "assetMetadata": [],
            "dataClass": "synthetic",
            "quotes": [
                {
                    "amount": "10000",
                    "asset": "0x1111111111111111111111111111111111111111",
                    "id": "quote",
                    "network": "eip155:8453",
                },
            ],
        },
    )
    print(res.status_code, res.text)