ToolVet
80trust / 100

Invoice Extract

by SiteCheck in Markets & finance

x402 APIPassing, checked 3 h ago

Structured data from an invoice: seller and buyer (name, address, tax ID), invoice number, dates, currency, line items, subtotal, tax, total and payment details, with null for anything absent. The arithmetic is checked (line sum against subtotal, subtotal plus tax against total) and mismatches are returned. PDF with a text layer by URL or base64, or plain text. Not live-checked: Workers AI is checked by the owner after the merge.

POST
https://api.sitecheck-api.workers.dev/api/invoice/extract
Price
$0.005
per call in USDC
Uptime
100%
last 30 days
Response time
83 ms
820 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://api.sitecheck-api.workers.dev/api/invoice/extract

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://api.sitecheck-api.workers.dev/api/invoice/extract
content-type: application/json

{
  "text": "Invoice INV-42\nWidget x2 at 10.00 = 20.00\nSubtotal 20.00\nTax 4.00\nTotal 24.00"
}

Parameters

ParameterTypeRequiredDescription
pdf_base64stringNoThe PDF as base64, up to 15 MB (JSON body field)
textstringNoThe invoice text (JSON body field); or give url or pdf_base64 instead
urlstringNohttps link to a PDF invoice with a text layer (JSON body field)

Example response

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

Example response, 51 lines
{
  "allChecksPass": true,
  "checkedAt": "2026-10-15T00:00:00.000Z",
  "checks": [
    {
      "check": "lineItems sum equals subtotal",
      "ok": true
    },
    {
      "check": "subtotal plus tax equals total",
      "computed": 24,
      "ok": true,
      "total": 24
    }
  ],
  "disclaimer": "Model extraction. Check the numbers against the document before paying or booking.",
  "invoice": {
    "buyer": {
      "address": "Unter den Linden 77, Berlin",
      "name": "Acme GmbH",
      "taxId": "DE811907980"
    },
    "currency": "EUR",
    "dueDate": "2026-10-31",
    "invoiceNumber": "INV-42",
    "issueDate": "2026-10-01",
    "lineItems": [
      {
        "amount": 20,
        "description": "Widget",
        "quantity": 2,
        "taxRate": 20,
        "unitPrice": 10
      }
    ],
    "paymentDetails": {
      "iban": null,
      "reference": "INV-42"
    },
    "seller": {
      "address": "1 High Street, London",
      "name": "Widgets Ltd",
      "taxId": "GB123456789"
    },
    "subtotal": 20,
    "tax": 4,
    "total": 24
  },
  "model": "@cf/meta/llama-3.3-70b-instruct-fp8-fast",
  "source": "text in the request"
}

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://api.sitecheck-api.workers.dev/api/invoice/extract' \
  -H 'content-type: application/json' \
  --data-raw '{"text":"Invoice INV-42\nWidget x2 at 10.00 = 20.00\nSubtotal 20.00\nTax 4.00\nTotal 24.00"}'

# 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/invoice/extract' \
  -H 'content-type: application/json' \
  --data-raw '{"text":"Invoice INV-42\nWidget x2 at 10.00 = 20.00\nSubtotal 20.00\nTax 4.00\nTotal 24.00"}' \
  | 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%2Fapi.sitecheck-api.workers.dev%2Fapi%2Finvoice%2Fextract&method=POST
const res = await pay("https://api.sitecheck-api.workers.dev/api/invoice/extract", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "text": "Invoice INV-42\nWidget x2 at 10.00 = 20.00\nSubtotal 20.00\nTax 4.00\nTotal 24.00"
  }),
});
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://api.sitecheck-api.workers.dev/api/invoice/extract",
        json={
            "text": "Invoice INV-42\nWidget x2 at 10.00 = 20.00\nSubtotal 20.00\nTax 4.00\nTotal 24.00",
        },
    )
    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 agoPassed40278 ms$0.005
8 h agoPassed402652 ms$0.005
12 h agoPassed40283 ms$0.005
16 h agoPassed402820 ms$0.005