ToolVet
77trust / 100

Micro Transparency Hash Chain Verification

by Decision Hash Chain Verification in Security & trust

x402 APIPassing, checked 2 h ago

Verify a bounded civic-ledger-1 public organizational decision suffix against declared checkpoints, including expected-head truncation detection. No Merkle proof or anchor.

POST https://www.mahastrategies.com/api/v1/micro/transparency-hash-chain-verification

Last 30 days

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Status and outage history · Atom feed

Uptime
100%
Response time
388 ms typical, 564 ms slowest 5%
Last check
2 h ago
Next check
any minute now

How to call it

POST https://www.mahastrategies.com/api/v1/micro/transparency-hash-chain-verification

Each call costs $0.0385 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

POST https://www.mahastrategies.com/api/v1/micro/transparency-hash-chain-verification
content-type: application/json

{
  "dataClass": "synthetic",
  "expectedHead": {
    "digest": "0000000000000000000000000000000000000000000000000000000000000000",
    "ledgerId": "synthetic-ledger",
    "sequence": 0
  },
  "preceding": {
    "digest": "0000000000000000000000000000000000000000000000000000000000000000",
    "ledgerId": "synthetic-ledger",
    "sequence": 0
  },
  "publicNonpersonalRecords": true,
  "receipts": []
}

Parameters

ParameterTypeRequiredDescription
dataClassstringYes One of: public, synthetic.
expectedHeadobjectYes
precedingobjectYes
publicNonpersonalRecordsbooleanYes One of: true.
receiptsarrayYes

Example response

The provider's example. We can't check it without paying.

Example response, 26 lines
{
  "amountBaseUnits": "38500",
  "boundaries": [
    "Public or synthetic inputs only. Caller labels are declarations,…"
  ],
  "inputDigest": "sha256:4eaf1d483c82d69111500df2e14ff9ae8f1e5cf3221c389f4bd78ebb5…",
  "offerId": "transparency-hash-chain-verification",
  "receiptDigest": "sha256:e960f3269cc3d179f1021353c20e284d49adaa1caa63b7d2157882a1b…",
  "result": {
    "computedHead": {
      "digest": "0000000000000000000000000000000000000000000000000000000000000000",
      "ledgerId": "synthetic-ledger",
      "sequence": 0
    },
    "dataClass": "synthetic",
    "expectedHeadMatched": true,
    "issues": [],
    "limitations": [
      "Matches civic-ledger-1 RFC 8785 receipt digests for a safe publi…"
    ],
    "serviceId": "transparency-hash-chain-verification",
    "valid": true,
    "verifiedReceiptCount": 0
  },
  "version": "maha-microproducts/0.1"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.0385.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://www.mahastrategies.com/api/v1/micro/transparency-hash-chain-verification' \
  -H 'content-type: application/json' \
  --data-raw '{"dataClass":"synthetic","expectedHead":{"digest":"0000000000000000000000000000000000000000000000000000000000000000","ledgerId":"synthetic-ledger","sequence":0},"preceding":{"digest":"0000000000000000000000000000000000000000000000000000000000000000","ledgerId":"synthetic-ledger","sequence":0},"publicNonpersonalRecords":true,"receipts":[]}'

# 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/transparency-hash-chain-verification' \
  -H 'content-type: application/json' \
  --data-raw '{"dataClass":"synthetic","expectedHead":{"digest":"0000000000000000000000000000000000000000000000000000000000000000","ledgerId":"synthetic-ledger","sequence":0},"preceding":{"digest":"0000000000000000000000000000000000000000000000000000000000000000","ledgerId":"synthetic-ledger","sequence":0},"publicNonpersonalRecords":true,"receipts":[]}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// 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 $0.0385 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.0385" });
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 $0.0385 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fwww.mahastrategies.com%2Fapi%2Fv1%2Fmicro%2Ftransparency-hash-chain-verification&method=POST
const res = await pay("https://www.mahastrategies.com/api/v1/micro/transparency-hash-chain-verification", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "dataClass": "synthetic",
    "expectedHead": {
      "digest": "0000000000000000000000000000000000000000000000000000000000000000",
      "ledgerId": "synthetic-ledger",
      "sequence": 0
    },
    "preceding": {
      "digest": "0000000000000000000000000000000000000000000000000000000000000000",
      "ledgerId": "synthetic-ledger",
      "sequence": 0
    },
    "publicNonpersonalRecords": true,
    "receipts": []
  }),
});
console.log(res.status, await res.text());
Python: pay and call
# 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 $0.0385 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.0385"})
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/transparency-hash-chain-verification",
        json={
            "dataClass": "synthetic",
            "expectedHead": {
                "digest": "0000000000000000000000000000000000000000000000000000000000000000",
                "ledgerId": "synthetic-ledger",
                "sequence": 0,
            },
            "preceding": {
                "digest": "0000000000000000000000000000000000000000000000000000000000000000",
                "ledgerId": "synthetic-ledger",
                "sequence": 0,
            },
            "publicNonpersonalRecords": True,
            "receipts": [],
        },
    )
    print(res.status_code, res.text)

Security scan

  • No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
2 h agoPassed402673 ms$0.038
6 h agoPassed402453 ms$0.038
10 h agoPassed402297 ms$0.038
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2 days agoPassed402375 ms$0.038