ToolVet
79trust / 100

Warden Scan

by AIMarket in Security & trust

x402 APIPassing, checked 3 h ago

WARDEN verdict on an MCP server's tools/list: allow or block, a 0-1 score and every finding with the matched text (prompt injection, secret requests, exfiltration, hidden Unicode). Deterministic published rules, no network.

POST
https://modelmarket.dev/x402/warden-scan
Price
$0.001
per call in USDC
Uptime
100%
last 30 days
Response time
426 ms
873 ms slowest 5%
Last check
Passed
3 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

POST https://modelmarket.dev/x402/warden-scan

Each call costs $0.001 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://modelmarket.dev/x402/warden-scan
content-type: application/json

{
  "tools": [
    {
      "description": "Returns the forecast for a city.",
      "inputSchema": {
        "type": "object"
      },
      "name": "get_weather"
    }
  ]
}

Parameters

ParameterTypeRequiredDescription
serverobjectNooptional {name, url}, used only as a label
toolsarray of objectYesthe server's tools/list result, up to 500 definitions

Example response

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

{
  "service": "warden-scan",
  "status": "ok",
  "verdict": {
    "allow": true,
    "findings": [],
    "score": 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 $0.001.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://modelmarket.dev/x402/warden-scan' \
  -H 'content-type: application/json' \
  --data-raw '{"tools":[{"description":"Returns the forecast for a city.","inputSchema":{"type":"object"},"name":"get_weather"}]}'

# 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://modelmarket.dev/x402/warden-scan' \
  -H 'content-type: application/json' \
  --data-raw '{"tools":[{"description":"Returns the forecast for a city.","inputSchema":{"type":"object"},"name":"get_weather"}]}' \
  | 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 $0.001 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.001" });
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 $0.001 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fmodelmarket.dev%2Fx402%2Fwarden-scan&method=POST
const res = await pay("https://modelmarket.dev/x402/warden-scan", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "tools": [
      {
        "description": "Returns the forecast for a city.",
        "inputSchema": {
          "type": "object"
        },
        "name": "get_weather"
      }
    ]
  }),
});
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 $0.001 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.001"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://modelmarket.dev/x402/warden-scan",
        json={
            "tools": [
                {
                    "description": "Returns the forecast for a city.",
                    "inputSchema": {
                        "type": "object",
                    },
                    "name": "get_weather",
                },
            ],
        },
    )
    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
3 h agoPassed402403 ms$0.001
7 h agoPassed402367 ms$0.001
11 h agoPassed402409 ms$0.001
15 h agoPassed402413 ms$0.001
19 h agoPassed402829 ms$0.001
Show 10 older checks
23 h agoPassed402391 ms$0.001
27 h agoPassed402412 ms$0.001
31 h agoPassed402384 ms$0.001
35 h agoPassed402388 ms$0.001
39 h agoPassed402329 ms$0.001
43 h agoPassed402474 ms$0.001
47 h agoPassed402423 ms$0.001
2 days agoPassed402393 ms$0.001
2 days agoPassed402396 ms$0.001
2 days agoPassed402406 ms$0.001