ToolVet
75trust / 100

Provenance Event Export

by Audit Export Normalizer in Security & trust

x402 APIPassing, checked 4 h ago

Validate and normalize a JSON audit-event export before reconciliation. Check up to 100 supplied metadata events for duplicate IDs, malformed timestamps and invalid digests. Returns normalized events and an integrity receipt; no CSV parsing, live-system access or proof of event completeness. New modular adapter: retained result recovery for 24 hours, minimal receipt metadata for 90 days. Existing live route unchanged.

POST https://www.mahastrategies.com/api/v1/verify/provenance/event-export

Last 30 days

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Status and outage history · Atom feed

Uptime
100%
Response time
187 ms typical, 187 ms slowest 5%
Last check
4 h ago
Next check
in 1 h

How to call it

POST https://www.mahastrategies.com/api/v1/verify/provenance/event-export

Each call costs $0.018002 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/verify/provenance/event-export
content-type: application/json

{
  "dataClass": "synthetic",
  "events": [
    {
      "eventId": "event-2",
      "eventType": "checked",
      "occurredAt": "2026-09-09T10:00:01.000Z",
      "subjectDigest": "sha256:2222222222222222222222222222222222222222222222222222222222222222"
    },
    {
      "eventId": "event-1",
      "eventType": "received",
      "occurredAt": "2026-09-09T10:00:00.000Z",
      "subjectDigest": "sha256:1111111111111111111111111111111111111111111111111111111111111111"
    }
  ]
}

Parameters

ParameterTypeRequiredDescription
dataClassstringYes One of: public, synthetic.
eventsarrayYes

Example response

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

Example response, 30 lines
{
  "data": {
    "chargedAmount": "18002",
    "inputHash": "sha256:2dcd0caa0ecc193884234f13d8797c7574d6a1e2d7d54de284455a976…",
    "limitations": [
      "Public or synthetic inputs only. Caller labels are declarations,…"
    ],
    "productId": "audit-export-normalizer",
    "result": {
      "completenessVerified": false,
      "eventOccurrenceVerified": false,
      "events": [
        {
          "eventId": "event-1",
          "eventType": "received",
          "occurredAt": "2026-09-09T10:00:00.000Z",
          "subjectDigest": "sha256:111111111111111111111111111111111111111111111111111111111…"
        }
      ],
      "exportDigest": "sha256:863b592c1639b958d8c14c728cb845c6913b6e2725f7ff40d0b665813…"
    },
    "resultHash": "sha256:efd01cda49d7d589452fb53323bb1b8862ea3728e08ec296805ba7b99…",
    "sourceContractAmount": "18000",
    "version": "maha-legacy-adapter/1"
  },
  "proof": {
    "settlement_id": "0x00000000000000000000000000000000000000000000000000000000000000…"
  },
  "success": true
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.018002.

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/verify/provenance/event-export' \
  -H 'content-type: application/json' \
  --data-raw '{"dataClass":"synthetic","events":[{"eventId":"event-2","eventType":"checked","occurredAt":"2026-09-09T10:00:01.000Z","subjectDigest":"sha256:2222222222222222222222222222222222222222222222222222222222222222"},{"eventId":"event-1","eventType":"received","occurredAt":"2026-09-09T10:00:00.000Z","subjectDigest":"sha256:1111111111111111111111111111111111111111111111111111111111111111"}]}'

# 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/provenance/event-export' \
  -H 'content-type: application/json' \
  --data-raw '{"dataClass":"synthetic","events":[{"eventId":"event-2","eventType":"checked","occurredAt":"2026-09-09T10:00:01.000Z","subjectDigest":"sha256:2222222222222222222222222222222222222222222222222222222222222222"},{"eventId":"event-1","eventType":"received","occurredAt":"2026-09-09T10:00:00.000Z","subjectDigest":"sha256:1111111111111111111111111111111111111111111111111111111111111111"}]}' \
  | 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 $0.018002 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.018002" });
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 $0.018002 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fwww.mahastrategies.com%2Fapi%2Fv1%2Fverify%2Fprovenance%2Fevent-export&method=POST
const res = await pay("https://www.mahastrategies.com/api/v1/verify/provenance/event-export", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "dataClass": "synthetic",
    "events": [
      {
        "eventId": "event-2",
        "eventType": "checked",
        "occurredAt": "2026-09-09T10:00:01.000Z",
        "subjectDigest": "sha256:2222222222222222222222222222222222222222222222222222222222222222"
      },
      {
        "eventId": "event-1",
        "eventType": "received",
        "occurredAt": "2026-09-09T10:00:00.000Z",
        "subjectDigest": "sha256:1111111111111111111111111111111111111111111111111111111111111111"
      }
    ]
  }),
});
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 $0.018002 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.018002"})
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/provenance/event-export",
        json={
            "dataClass": "synthetic",
            "events": [
                {
                    "eventId": "event-2",
                    "eventType": "checked",
                    "occurredAt": "2026-09-09T10:00:01.000Z",
                    "subjectDigest": "sha256:2222222222222222222222222222222222222222222222222222222222222222",
                },
                {
                    "eventId": "event-1",
                    "eventType": "received",
                    "occurredAt": "2026-09-09T10:00:00.000Z",
                    "subjectDigest": "sha256:1111111111111111111111111111111111111111111111111111111111111111",
                },
            ],
        },
    )
    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
4 h agoPassed402187 ms$0.018