stageDark ESIR

e-Fiscalization · TaxCore VSDC

Fiscalize your web shop with a single API call

Connect your location's certificate, get an API key and send invoices from your shop. We handle signing, retries and reporting.

How it works

  1. 01

    Sign up

    Log in with email, Google or GitHub.

  2. 02

    Add a location

    Upload the PFX certificate, password and PAC. We verify the VSDC connection right away.

  3. 03

    Send invoices

    Get an API key for the location and send invoices from your shop.

Everything you need for fiscalization

All invoice types

Sales, pre-sales, copy, training and advance — sale and refund.

Sandbox and production

Test against the TaxCore sandbox before going live.

Reliable delivery

Idempotent requests and automatic retries when VSDC is unavailable.

Per-location reports

Revenue, taxes and payment methods, with CSV and XLSX export.

Secure credentials

Certificate, password and PAC are encrypted and never leave the server.

REST API

A simple JSON API with an OpenAPI specification.

Issue an invoice with one request

Same model as TaxCore VSDC — with readable values instead of numbers.

curl -X POST https://<domain>/api/v1/invoices \
  -H "Authorization: Bearer fsk_live_…" \
  -H "Idempotency-Key: order-10482" \
  -H "Content-Type: application/json" \
  -d '{
    "invoiceType": "Normal",
    "transactionType": "Sale",
    "externalOrderId": "10482",
    "payment": [{ "paymentType": "Card", "amount": 2400 }],
    "items": [{
      "name": "T-shirt",
      "quantity": 2,
      "unitPrice": 1200,
      "labels": ["Ђ"],
      "totalAmount": 2400
    }]
  }'