API Documentation

Authentication

Every request needs your API key in the Authorization header (recommended) or as a ?key= parameter.

curl "https://nakordoni.eu/api/v1/data/queue?ppid=id_13" \
  -H "Authorization: Bearer NKD-DEV-XXXX-XXXX-XXXX"

Response envelope

{
  "ok": true,
  "api_version": "v1",
  "product": "queue",
  "attribution": "Data by nakordoni.eu",
  "data": { ... },
  "usage": { "limit": 1000, "used": 42, "reset": "2026-06-06T00:00:00Z" }
}

Errors return ok:false with error.code (missing_api_key, invalid_api_key, qps_exceeded, quota_exceeded, unknown_product, product_unavailable, bad_request, internal_error) and HTTP status 401/403/404/429/500. Rate-limit headers X-Devapi-Limit and X-Devapi-Remaining are sent on every metered response.

Quotas

Daily counters reset at midnight UTC. You get an email at 80% and 100% of quota.

Code samples

curl

curl "https://nakordoni.eu/api/v1/data/queue?ppid=id_13" \
  -H "Authorization: Bearer $NKD_API_KEY"

JavaScript (fetch)

const res = await fetch('https://nakordoni.eu/api/v1/data/forecast?ppid=id_13&prediction_steps=24', {
  headers: { Authorization: `Bearer ${process.env.NKD_API_KEY}` }
});
const { ok, data, usage } = await res.json();
if (!ok) throw new Error(data?.error?.code ?? res.status);
console.log(`forecast points: ${data.length}, calls left today: ${usage.limit - usage.used}`);

Python (requests)

import os, requests

r = requests.get(
    "https://nakordoni.eu/api/v1/data/stats",
    params={"ppid": "id_15", "compare": 1},
    headers={"Authorization": f"Bearer {os.environ['NKD_API_KEY']}"},
    timeout=15,
)
payload = r.json()
print(payload["data"]["daily"], payload["usage"])

Products

Pick an endpoint for its full reference, parameters, versions and a live sandbox.

Border Queues

Forecasts & Stats

Fuel & Locations

Travel Planning

Drivers & Roads

AI Assistant

Other

History data export

Approved developers can download hourly-averaged, published border-queue history for up to 5 checkpoints (rolling window up to 90 days) as gzipped CSV or NDJSON. This is a portal-only feature — NOT an API endpoint; you build and download exports from the "Data export" tab in your account.

Access is granted on request: open a Data ticket telling us which checkpoints, the time window, and your intended use. Once approved, the Data export tab appears in your account. Default limit: 1 export/day, up to 5 checkpoints each — ask us to raise it.

Fields — one row per checkpoint per UTC hour

Data is published-only and passes our anomaly / data-quality checks before export (no raw per-report data). All timestamps are UTC. Files are kept for 10 days.

Provenance: every file embeds a signed fingerprint (sha256 + HMAC) in its header, so any copy can later be confirmed as genuine nakordoni.eu data and checked for tampering — even after download.

# sha256: 3f9c…   # signature: e87b…
ppid,checkpoint_name,hour_utc,direction,vehicle_type,avg_queue_length,avg_wait_minutes,sample_count,source
id_10,Hrushiv,2026-06-12T02:00:00Z,UA->PL,car,11.3,,4,line+granicaua

What you can build

The same data products render the visuals on nakordoni.eu — weekly forecast charts, hourly queue profiles, live status cards. A taste of what the forecast and stats APIs contain:

Attribution

Explorer-plan integrations must show a visible "Data by nakordoni.eu" link wherever the data is displayed. It keeps the free plan free.

The exact code

Copy this snippet as-is. The link must stay indexable: a plain HTML <a href> that search engines can follow — do NOT add rel="nofollow" or rel="sponsored", do not render it only via JavaScript, and do not hide it with CSS.

<a href="https://nakordoni.eu/" title="Border queues, forecasts &amp; statistics">Data by nakordoni.eu</a>

Compact small-print variant (e.g. under a chart or widget):

<p style="font-size:12px;margin:4px 0">
  Data by <a href="https://nakordoni.eu/">nakordoni.eu</a>
</p>

You may link to your language version instead, e.g. https://nakordoni.eu/pl/ — any indexable link to nakordoni.eu counts. The anchor text "Data by nakordoni.eu" must stay in English.

Where to place it

• Directly next to or under the data block (table, chart, widget, answer) — on the same screen, visible without extra clicks.
• On every page or app screen where our data appears — not only on an "about" page.
• Readable size and contrast: at least ~11px, not hidden, not collapsed, not the same color as the background.
• Native mobile apps without HTML links: show the text "Data by nakordoni.eu" on the data screen and put the tappable link on your info/about screen.

We periodically verify attribution on the "page where the data is used" you provided at signup. Missing or de-indexed attribution on the Explorer plan leads to a reminder first, then key suspension. Pay As You Grow customers may omit attribution.

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