ToolVet
78trust / 100

Watch 6h

by ToolFit by YourAITools in Developer tools

x402 APIPassing, checked 2 h ago

MCP server monitoring API (6h checks, 30 days). Same as POST /v1/watch, but the server is re-audited every 6 hours for 30 days. HMAC-SHA256 signed webhook on tools/list fingerprint or grade changes (and unreachable/recovered). Returns watch_id, the signing secret (shown once) and the baseline. Never charged for unreachable or blocked URLs or a full watch list. Search intents: mcp server monitoring, mcp uptime, mcp tool change alerts, mcp webhook alerts, watch mcp server, mcp drift monitor.

POST
https://api.youraitools.co/toolfit/v1/watch/6h
Price
$0.6
per call in USDC
Uptime
100%
last 30 days
Response time
201 ms
6.7 s slowest 5%
Last check
Passed
2 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://api.youraitools.co/toolfit/v1/watch/6h

Each call costs $0.6 in USDC on Polygon, 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://api.youraitools.co/toolfit/v1/watch/6h
content-type: application/json

{
  "url": "https://api.youraitools.co/mcp/hub",
  "webhook": "https://example.com/hooks/toolfit"
}

Parameters

ParameterTypeRequiredDescription
everystringNoOptional; this route is the 6 h interval. One of: 6h.
urlstringYesPublic remote MCP server URL (Streamable HTTP, https), e.g. https://api.youraitools.co/mcp/hub. ToolFit only lists its tools.
webhookstringYesYour https endpoint (public host, port 443) that receives the signed JSON change notifications. A query string is allowed.

Example response

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

{
  "baseline": {
    "grade": "B",
    "pin": "ts_0123456789abcdef0123456789abcdef",
    "score": 85,
    "tools": 36
  },
  "every": "6h",
  "expires_at": "2026-11-23T17:00:00.000Z",
  "secret": "whsec_<64 hex, shown once>",
  "status_url": "https://api.youraitools.co/toolfit/v1/watch/w_0123456789abcdef01234567",
  "watch_id": "w_0123456789abcdef01234567"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.6.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.youraitools.co/toolfit/v1/watch/6h' \
  -H 'content-type: application/json' \
  --data-raw '{"url":"https://api.youraitools.co/mcp/hub","webhook":"https://example.com/hooks/toolfit"}'

# 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://api.youraitools.co/toolfit/v1/watch/6h' \
  -H 'content-type: application/json' \
  --data-raw '{"url":"https://api.youraitools.co/mcp/hub","webhook":"https://example.com/hooks/toolfit"}' \
  | 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 $0.6 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.6" });
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 $0.6 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.youraitools.co%2Ftoolfit%2Fv1%2Fwatch%2F6h&method=POST
const res = await pay("https://api.youraitools.co/toolfit/v1/watch/6h", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "url": "https://api.youraitools.co/mcp/hub",
    "webhook": "https://example.com/hooks/toolfit"
  }),
});
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 $0.6 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.6"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.youraitools.co/toolfit/v1/watch/6h",
        json={
            "url": "https://api.youraitools.co/mcp/hub",
            "webhook": "https://example.com/hooks/toolfit",
        },
    )
    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
2 h agoPassed402319 ms$0.6
9 h agoPassed402175 ms$0.6
17 h agoPassed402195 ms$0.6
25 h agoPassed402233 ms$0.6
32 h agoPassed402190 ms$0.6
Show 9 older checks
40 h agoPassed4026.7 s$0.6
47 h agoPassed402182 ms$0.6
2 days agoPassed402223 ms$0.6
3 days agoPassed402332 ms$0.6
3 days agoPassed402194 ms$0.6
3 days agoPassed402201 ms$0.6
3 days agoPassed402343 ms$0.6
4 days agoPassed402139 ms$0.6
4 days agoPassed402481 ms$0.6