ToolVet
80trust / 100

Entities

by SiteCheck in Company & people data

x402 APIPassing, checked 23 min ago

Named entities in a text or a page: people, organisations, places, dates and money amounts (from the chat model), plus e-mail addresses, URLs and phone numbers (from patterns), each de-duplicated with a count. With url, the page's readable text is used (robots.txt is respected).

POST
https://api.sitecheck-api.workers.dev/api/entities
Price
$0.003
per call in USDC
Uptime
100%
last 30 days
Response time
72 ms
809 ms slowest 5%
Last check
Passed
23 min ago, next in 5 min

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed

How to call it

POST https://api.sitecheck-api.workers.dev/api/entities

Each call costs $0.003 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://api.sitecheck-api.workers.dev/api/entities
content-type: application/json

{
  "text": "Ada Lovelace wrote notes for Charles Babbage in London in 1843. Contact [email protected] or +44 20 7946 0958."
}

Parameters

ParameterTypeRequiredDescription
textstringNoText, up to 12,000 characters
urlstringNoOr a page address, https://…

Example response

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

Example response, 43 lines
{
  "checkedAt": "2026-10-14T07:05:00.000Z",
  "dates": [
    {
      "count": 1,
      "name": "1843"
    }
  ],
  "emails": [
    {
      "count": 1,
      "value": "[email protected]"
    }
  ],
  "model": "@cf/meta/llama-3.3-70b-instruct-fp8-fast",
  "money": [],
  "organisations": [],
  "people": [
    {
      "count": 1,
      "name": "Ada Lovelace"
    },
    {
      "count": 1,
      "name": "Charles Babbage"
    }
  ],
  "phones": [
    {
      "count": 1,
      "value": "+442079460958"
    }
  ],
  "places": [
    {
      "count": 1,
      "name": "London"
    }
  ],
  "source": "chat model (Workers AI, Groq fallback) for names; regex and libphonenumber for e-mails, URLs and phones",
  "url": null,
  "urls": []
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.003.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.sitecheck-api.workers.dev/api/entities' \
  -H 'content-type: application/json' \
  --data-raw '{"text":"Ada Lovelace wrote notes for Charles Babbage in London in 1843. Contact [email protected] or +44 20 7946 0958."}'

# 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.sitecheck-api.workers.dev/api/entities' \
  -H 'content-type: application/json' \
  --data-raw '{"text":"Ada Lovelace wrote notes for Charles Babbage in London in 1843. Contact [email protected] or +44 20 7946 0958."}' \
  | 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 $0.003 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.003" });
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 $0.003 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.sitecheck-api.workers.dev%2Fapi%2Fentities&method=POST
const res = await pay("https://api.sitecheck-api.workers.dev/api/entities", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "text": "Ada Lovelace wrote notes for Charles Babbage in London in 1843. Contact [email protected] or +44 20 7946 0958."
  }),
});
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 $0.003 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.003"})
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.sitecheck-api.workers.dev/api/entities",
        json={
            "text": "Ada Lovelace wrote notes for Charles Babbage in London in 1843. Contact [email protected] or +44 20 7946 0958.",
        },
    )
    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
23 min agoPassed40299 ms$0.003
5 h agoPassed402701 ms$0.003
9 h agoPassed40272 ms$0.003
13 h agoPassed40264 ms$0.003
18 h agoPassed40243 ms$0.003
Show 1 older checks
22 h agoPassed402809 ms$0.003