ToolVet
77trust / 100

Spend Guard Review File

by AISkills402: Spend Cap Review in Search & web

x402 APIPassing, checked 1 h ago

Spend Cap Review: Do Cost Limits Really Stop? — Reviews pasted code and configuration that spends money (paid AI or API calls, purchases, paid lookups, anything billed per use) and checks whether the limit on that spending really stands in the way of the spending. It flags a cap that sits beside the path instead of on it (a gateway limit while a script calls the provider directly, a counter only in the browser), a missing setting that means no limit, an alert or a budget email used as the prote…

GET
https://api.aiskills402.com/v1/skills/spend-guard-review/file
Price
$0.03
per call in USDC
Uptime
100%
last 30 days
Response time
546 ms
1.1 s slowest 5%
Last check
Passed
1 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed · Watch with other listings

How to call it

GET https://api.aiskills402.com/v1/skills/spend-guard-review/file

Each call costs $0.03 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

The listing has no example input.

GET https://api.aiskills402.com/v1/skills/spend-guard-review/file

Example response

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

{
  "file": {
    "content": "<the SKILL.md file>",
    "encoding": "utf-8",
    "name": "SKILL.md"
  },
  "name": "Spend Cap Review: Do Cost Limits Really Stop?",
  "ok": true,
  "receipt": {
    "settled": true,
    "tx": "0x<settlement transaction>"
  },
  "redownload": {
    "token": "<64 hex chars>",
    "url": "<api>/v1/purchases/<token>"
  },
  "sha256": "<sha256 of SKILL.md>",
  "skill": "spend-guard-review",
  "version": "1.0.0"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.03.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.aiskills402.com/v1/skills/spend-guard-review/file'

# 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 - 'https://api.aiskills402.com/v1/skills/spend-guard-review/file' \
  | 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 $0.03 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.03" });
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 $0.03 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.aiskills402.com%2Fv1%2Fskills%2Fspend-guard-review%2Ffile
const res = await pay("https://api.aiskills402.com/v1/skills/spend-guard-review/file");
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 $0.03 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.03"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.aiskills402.com/v1/skills/spend-guard-review/file")
    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
1 h agoPassed402262 ms$0.03
7 h agoPassed402679 ms$0.03
12 h agoPassed40279 ms$0.03
17 h agoPassed402794 ms$0.03
22 h agoPassed402546 ms$0.03
Show 10 older checks
27 h agoPassed402746 ms$0.03
32 h agoPassed402400 ms$0.03
37 h agoPassed402559 ms$0.03
42 h agoPassed402618 ms$0.03
47 h agoPassed402362 ms$0.03
2 days agoPassed402494 ms$0.03
2 days agoPassed402185 ms$0.03
3 days agoPassed402142 ms$0.03
3 days agoPassed402817 ms$0.03
3 days agoPassed402560 ms$0.03