ToolVet
77trust / 100

Uuid

by SiteCheck in Developer tools

x402 APIPassing, checked 4 h ago

Identifiers and secrets from the Web Crypto random source: UUID v4 and v7, ULID, nanoid (size and alphabet), random passwords (length and character classes) and passphrases (words from the EFF large wordlist, CC BY 3.0 US), up to 100 per call. mode=parse validates a UUID or ULID and reports its version, variant and the time embedded in v1, v6, v7 and ULID. Nothing is stored.

GET
https://api.sitecheck-api.workers.dev/api/uuid
Price
$0.001
per call in USDC
Uptime
100%
last 30 days
Response time
709 ms
3.8 s slowest 5%
Last check
Passed
4 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.sitecheck-api.workers.dev/api/uuid

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.

GET https://api.sitecheck-api.workers.dev/api/uuid?count=2&kind=uuid7

Parameters

ParameterTypeRequiredDescription
alphabetstringNonanoid alphabet, 2 to 64 distinct characters (optional)
classesstringNopassword classes: lower, upper, digits, symbols (comma-separated, default all)
countstringNoHow many, 1 to 100, default 1
kindstringNouuid4 (default), uuid7, ulid, nanoid, password or passphrase
lengthstringNopassword length, 8 to 128, default 20
modestringNogenerate (default) or parse
separatorstringNopassphrase separator, up to 3 characters, default -
sizestringNonanoid length, 2 to 256, default 21
valuestringNomode parse: a UUID or ULID to check
wordsstringNopassphrase words, 3 to 10, default 6

Example response

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

{
  "checkedAt": "2026-10-15T14:07:52.201Z",
  "count": 2,
  "kind": "uuid7",
  "mode": "generate",
  "source": "Generated here with crypto.getRandomValues (no outside source); passphrase words from the EFF large wordlist (CC BY 3.0 US)",
  "values": [
    "01a13fe4-0b88-7649-b71e-cbe83a02b709",
    "01a13fe4-0b89-7c83-b930-b1632c94f537"
  ]
}

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 'https://api.sitecheck-api.workers.dev/api/uuid?count=2&kind=uuid7'

# 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.sitecheck-api.workers.dev/api/uuid?count=2&kind=uuid7' \
  | 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%2Fapi.sitecheck-api.workers.dev%2Fapi%2Fuuid
const res = await pay("https://api.sitecheck-api.workers.dev/api/uuid?count=2&kind=uuid7");
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.get("https://api.sitecheck-api.workers.dev/api/uuid?count=2&kind=uuid7")
    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
4 h agoPassed40257 ms$0.001
9 h agoPassed402709 ms$0.001
13 h agoPassed4023.8 s$0.001