ToolVet
78trust / 100

Tools Permission Diff

by Tool Permission Change Analysis in Security & trust

x402 APIPassing, checked 32 min ago

Review permission changes before an agent release. Compare two explicit allow-only sets by tool, action and exact resource; report additions, removals and wildcard additions. Does not resolve IAM inheritance or wildcard containment, or authorize execution. 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/tools/permission-diff

Last 30 days

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Status and outage history · Atom feed

Uptime
100%
Response time
175 ms typical, 175 ms slowest 5%
Last check
32 min ago
Next check
any minute now

How to call it

POST https://www.mahastrategies.com/api/v1/verify/tools/permission-diff

Each call costs $0.021002 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/tools/permission-diff
content-type: application/json

{
  "after": [
    {
      "action": "read",
      "resource": "*",
      "tool": "files"
    }
  ],
  "before": [
    {
      "action": "read",
      "resource": "public/example",
      "tool": "files"
    }
  ],
  "dataClass": "synthetic"
}

Parameters

ParameterTypeRequiredDescription
afterarrayYes
beforearrayYes
dataClassstringYes One of: public, synthetic.

Example response

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

Example response, 41 lines
{
  "data": {
    "chargedAmount": "21002",
    "inputHash": "sha256:1f32d39d3ccd205fb32fda243d7fbf9974016d93752fd2c9a3131ff11…",
    "limitations": [
      "Public or synthetic inputs only. Caller labels are declarations,…"
    ],
    "productId": "tool-permission-diff",
    "result": {
      "added": [
        {
          "action": "read",
          "resource": "*",
          "tool": "files"
        }
      ],
      "effectiveAuthorizationEvaluated": false,
      "removed": [
        {
          "action": "read",
          "resource": "public/example",
          "tool": "files"
        }
      ],
      "wildcardAdditions": [
        {
          "action": "read",
          "resource": "*",
          "tool": "files"
        }
      ]
    },
    "resultHash": "sha256:7e9b66b64921d191f54bf94ef8a07d5e469a61a4a5e1853d6728a71e5…",
    "sourceContractAmount": "21000",
    "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 $0.021002.

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/tools/permission-diff' \
  -H 'content-type: application/json' \
  --data-raw '{"after":[{"action":"read","resource":"*","tool":"files"}],"before":[{"action":"read","resource":"public/example","tool":"files"}],"dataClass":"synthetic"}'

# 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/tools/permission-diff' \
  -H 'content-type: application/json' \
  --data-raw '{"after":[{"action":"read","resource":"*","tool":"files"}],"before":[{"action":"read","resource":"public/example","tool":"files"}],"dataClass":"synthetic"}' \
  | 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 $0.021002 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.021002" });
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 $0.021002 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fwww.mahastrategies.com%2Fapi%2Fv1%2Fverify%2Ftools%2Fpermission-diff&method=POST
const res = await pay("https://www.mahastrategies.com/api/v1/verify/tools/permission-diff", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "after": [
      {
        "action": "read",
        "resource": "*",
        "tool": "files"
      }
    ],
    "before": [
      {
        "action": "read",
        "resource": "public/example",
        "tool": "files"
      }
    ],
    "dataClass": "synthetic"
  }),
});
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 $0.021002 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.021002"})
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/tools/permission-diff",
        json={
            "after": [
                {
                    "action": "read",
                    "resource": "*",
                    "tool": "files",
                },
            ],
            "before": [
                {
                    "action": "read",
                    "resource": "public/example",
                    "tool": "files",
                },
            ],
            "dataClass": "synthetic",
        },
    )
    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
32 min agoPassed402231 ms$0.021
10 h agoPassed402175 ms$0.021