Proxy Invoice Extract

{
  "data": {
    "buyer": {
      "city": "Bremen",
      "country": "DE",
      "email": "[email protected]",
      "name": "Bauträger Nord GmbH & Co. KG",
      "postal_code": "28195",
      "street": "Am Hafen 5",
      "tax_number": null,
      "vat_id": "DE987654321"
    },
    "buyer_reference": "RE-2026-0001",
    "checks": {
      "arithmetic": {
        "issues": [],
        "ok": true
      },
      "iban": {
        "bank": "Deutsche Kreditbank Berlin",
        "bic_matches": true,
        "checked": true,
        "reason": null,
        "valid": true
      },
      "seller_vat_id": {
        "checked": true,
        "registered_name": null,
        "source": "EU VIES",
        "valid": false
      }
    },
    "currency": "EUR",
    "delivery_date": "2026-10-08",
    "due_date": "2026-10-24",
    "e_invoice": {
      "format": "ZUGFeRD / Factur-X EN 16931",
      "is_e_invoice": true,
      "note": "Structured e-invoice (EN 16931). Amounts were read exactly from the XML, no A...",
      "specification": "urn:cen.eu:en16931:2017"
    },
    "extracted_at": "2026-10-10T19:59:48.740Z",
    "invoice_number": "RE-2026-0001",
    "issue_date": "2026-10-10",
    "lines": [
      {
        "description": "Malerarbeiten Treppenhaus: Wände und Decken, 2x gestrichen",
        "net_amount": 725,
        "quantity": 12.5,
        "tax_category": "S",
        "tax_rate": 19,
        "unit": "HUR",
        "unit_price": 58
      }
    ],
    "model": null,
    "notes": [
      "Vielen Dank für Ihren Auftrag & die gute Zusammenarbeit <3"
    ],
    "order_reference": null,
    "payment": {
      "account_name": "Malerbetrieb Muster GmbH",
      "bic": "BYLADEM1001",
      "iban": "DE02120300000000202051",
      "means": "SEPA credit transfer",
      "reference": "Rechnung RE-2026-0001",
      "terms": "Zahlbar innerhalb von 14 Tagen ohne Abzug."
    },
    "seller": {
      "city": "Hamburg",
      "country": "DE",
      "email": "[email protected]",
      "name": "Malerbetrieb Muster GmbH",
      "postal_code": "20095",
      "street": "Hauptstraße 12",
      "tax_number": "22/815/08150",
      "vat_id": "DE123456789"
    },
    "service_period": null,
    "source": "pdf_embedded_xml",
    "tax_breakdown": [
      {
        "amount": 166.24,
        "base": 874.97,
        "category": "S",
        "exemption_reason": null,
        "rate": 19
      }
    ],
    "totals": {
      "gross": 1067.21,
      "net": 899.27,
      "payable": 1067.21,
      "prepaid": null,
      "tax": 167.94
    },
    "type": "invoice",
    "type_code": "380",
    "warnings": [
      "Seller VAT ID is not valid in VIES"
    ]
  },
  "success": true
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://agentsvc.io/api/v1/proxy/invoice-extract' \
  -H 'content-type: application/json' \
  --data-raw '{"pdf_url":"https://agentsvc.io/samples/zugferd-invoice.pdf"}'

# 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://agentsvc.io/api/v1/proxy/invoice-extract' \
  -H 'content-type: application/json' \
  --data-raw '{"pdf_url":"https://agentsvc.io/samples/zugferd-invoice.pdf"}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// 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 $0.02 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.02" });
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 $0.02 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fagentsvc.io%2Fapi%2Fv1%2Fproxy%2Finvoice-extract&method=POST
const res = await pay("https://agentsvc.io/api/v1/proxy/invoice-extract", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "pdf_url": "https://agentsvc.io/samples/zugferd-invoice.pdf"
  }),
});
console.log(res.status, await res.text());

# 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 $0.02 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.02"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://agentsvc.io/api/v1/proxy/invoice-extract",
        json={
            "pdf_url": "https://agentsvc.io/samples/zugferd-invoice.pdf",
        },
    )
    print(res.status_code, res.text)