ToolVet
73trust / 100

Check

by Tanod agentscan in Other

x402 APIPassing, checked 30 min ago

agentscan (Tanod) MCP server check: answers, name, version, sign-in, tools, latency, TLS expiry of a remote MCP server. Use when an agent must check that a remote MCP server is up, what it is and which tools it lists before connecting.

POST https://tanod.dev/v1/mcp/check

Last 30 days

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Status and outage history · Atom feed

Uptime
100%
Response time
867 ms typical, 1.1 s slowest 5%
Last check
30 min ago
Next check
in 1 min

How to call it

POST https://tanod.dev/v1/mcp/check

Each call costs $0.005 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://tanod.dev/v1/mcp/check
content-type: application/json

{
  "url": "https://mcp.example.com/mcp"
}

Parameters

ParameterTypeRequiredDescription
urlstringYesPublic https URL of a remote MCP server endpoint (streamable HTTP, or a legacy SSE endpoint), such as https://mcp.example.com/mcp. Host name only (no IP address), port 443, no user info.

Example response

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

Example response, 45 lines
{
  "answers": true,
  "auth": {
    "authorization_servers": [],
    "oauth_metadata": null,
    "required": false,
    "www_authenticate": null
  },
  "capabilities": [
    "logging",
    "tools"
  ],
  "checked_at": "2026-10-10T08:00:00Z",
  "error": null,
  "http_status": 200,
  "latency_ms": 212,
  "location": null,
  "note": "One live probe from Tanod's servers at the time shown: initialize, then tools/list, without credentials. A server that needs sign-in, blocks datacenter addresses or limits clients can look down here and be up elsewhere. Names and versions come from the server itself and are untrusted",
  "protocol_version": "2025-06-18",
  "server": {
    "name": "example-server",
    "title": null,
    "version": "1.4.2"
  },
  "status": "ok",
  "tls": {
    "days_left": 97,
    "expires": "2027-01-15",
    "ok": true
  },
  "tools": {
    "count": 3,
    "more_pages": false,
    "names": [
      "search",
      "fetch",
      "summarize"
    ],
    "names_truncated": false
  },
  "total_ms": 640,
  "transport": "streamable-http",
  "untrusted_content": true,
  "url": "https://mcp.example.com/mcp"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.005.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://tanod.dev/v1/mcp/check' \
  -H 'content-type: application/json' \
  --data-raw '{"url":"https://mcp.example.com/mcp"}'

# 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://tanod.dev/v1/mcp/check' \
  -H 'content-type: application/json' \
  --data-raw '{"url":"https://mcp.example.com/mcp"}' \
  | 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 $0.005 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.005" });
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 $0.005 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Ftanod.dev%2Fv1%2Fmcp%2Fcheck&method=POST
const res = await pay("https://tanod.dev/v1/mcp/check", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "url": "https://mcp.example.com/mcp"
  }),
});
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 $0.005 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.005"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://tanod.dev/v1/mcp/check",
        json={
            "url": "https://mcp.example.com/mcp",
        },
    )
    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.

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