Pricing

from $10.00 / 1,000 invoice generateds

KSeF FA(3) Invoice Generator

Turn structured JSON into KSeF FA(3) XML, then run the pinned official FA(3) Schema and deterministic offline technical checks.

Pricing

from $10.00 / 1,000 invoice generateds

Rating

0.0

(0)

Developer

Kamer Ozkan

Actor stats

Bookmarked

Total users

Monthly active users

8 hours ago

Last modified

Categories

Developer tools

You can access the KSeF FA(3) Invoice Generator programmatically from your own applications by using the Apify API. You can also choose the language preference from below. To use the Apify API, you’ll need an Apify account and your API token, found in API & Integrations in Apify Console.

Python

JavaScript

CLI

OpenAPI

HTTP

MCP

# Set API token
$API_TOKEN=<YOUR_API_TOKEN>

# Prepare Actor input
$cat > input.json << 'EOF'
<{
<  "invoice": {
<    "invoice_number": "INV-2026-0001",
<    "issue_date": "2026-07-29",
<    "due_date": "2026-08-28",
<    "delivery_date": "2026-07-29",
<    "currency": "PLN",
<    "invoice_type_code": "380",
<    "buyer_reference": "BUYER-REF-1001",
<    "purchase_order_reference": "PO-2026-1001",
<    "seller": {
<      "name": "Przykladowy Sprzedawca Sp. z o.o.",
<      "address": {
<        "line1": "ul. Prosta 1",
<        "city": "Warszawa",
<        "postal_code": "00-001",
<        "country_code": "PL"
<      },
<      "vat_id": "PL5265877635",
<      "tax_id": "5265877635"
<    },
<    "buyer": {
<      "name": "Przykladowy Nabywca Sp. z o.o.",
<      "address": {
<        "line1": "ul. Dluga 2",
<        "city": "Krakow",
<        "postal_code": "30-001",
<        "country_code": "PL"
<      },
<      "vat_id": "PL1234563218",
<      "tax_id": "1234563218"
<    },
<    "lines": [
<      {
<        "id": "1",
<        "description": "Usluga doradcza",
<        "quantity": "2",
<        "unit_code": "HUR",
<        "unit_price": "500.00",
<        "tax_rate": "23",
<        "tax_category": "S"
<      }
<    ],
<    "payment": {
<      "means_code": "30",
<      "reference": "INV-2026-0001",
<      "iban": "PL61109010140000071219812874"
<    },
<    "notes": [],
<    "extensions": {
<      "ksef": {
<        "jst": false,
<        "gv": false
<      }
<    }
<  }
<}
<EOF

# Run the Actor using an HTTP API
# See the full API reference at https://docs.apify.com/api/v2
$curl "https://api.apify.com/v2/actors/kamerozkan~ksef-fa-invoice-generator/runs?token=$API_TOKEN" \
<  -X POST \
<  -d @input.json \
<  -H 'Content-Type: application/json'

KSeF FA(3) XML Invoice Generator API API

Below, you can find a list of relevant HTTP API endpoints for calling the KSeF FA(3) Invoice Generator Actor. For this, you’ll need an Apify account. Replace <YOUR_API_TOKEN> in the URLs with your Apify API token, which you can find under API & Integrations in Apify Console. For details, see the API reference.

Run Actor

POST
https://api.apify.com/v2/actors/kamerozkan~ksef-fa-invoice-generator/runs?token=<YOUR_API_TOKEN>

Note: By adding the method=POST query parameter, this API endpoint can be called using a GET request and thus used in third-party webhooks. Please refer to our Run Actor API documentation.

Run Actor synchronously and get dataset items

POST
https://api.apify.com/v2/actors/kamerozkan~ksef-fa-invoice-generator/run-sync-get-dataset-items?token=<YOUR_API_TOKEN>

Note: This endpoint supports both POST and GET request methods. However, only the POST method allows you to pass input data. For more information, please refer to our Run Actor synchronously and get dataset items API documentation.

Get Actor

GET
https://api.apify.com/v2/actors/kamerozkan~ksef-fa-invoice-generator?token=<YOUR_API_TOKEN>

For more information, please refer to our Get Actor API documentation.

Actors can be used to scrape web pages, extract data, or automate browser tasks. Use the KSeF FA(3) Invoice Generator API programmatically via the Apify API.

You can choose from:

KSeF FA(3) Invoice Generator API in Python

KSeF FA(3) Invoice Generator API in JavaScript

KSeF FA(3) Invoice Generator API through CLI

KSeF FA(3) Invoice Generator OpenAPI definition

You can start KSeF FA(3) Invoice Generator with the Apify API by sending an HTTP POST request to the Run Actorendpoint. An Actor’s input and its content type can be passed as a payload of the POST request, and additional options can be specified using URL query parameters. The KSeF FA(3) Invoice Generator is identified within the API by its ID, which is the creator’s username and the name of the Actor.

When the KSeF FA(3) Invoice Generator run finishes you can list the data from its default dataset(storage) via the API or you can preview the data directly on Apify Console.

Poland KSeF FA(3) Preflight Validator - e-Faktura XML

kamerozkan/poland-ksef-preflight-validator

Validate KSeF FA(3) invoice XML before submission with the official pinned XSD and documented offline technical checks. Offline e-faktura preflight for faktura ustrukturyzowana: catch schema, NIP, and cross-field errors in Polish invoices before KSeF e-invoicing submission.

Kamer Ozkan

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