City, Gdynia API

Free to Use
38 F
Measured Score 0 50 100 Speed 4/30 Consistency 20/20 Security 10/20 Browser access 0/15 Transparency 4/15 TESTED 2026-08-10

Overview

The City of Gdynia Open Data portal provides free access to public datasets from Gdynia, Poland. You can browse and download data on public transport, city infrastructure, and administrative information in structured formats. The portal uses an open data standard and requires no registration to access.

Beginner Tip

Start by visiting the API documentation page to browse available datasets and their identifiers before making programmatic requests.

Measurement Record

What actually happened when we called this API from our own infrastructure. Every value below was recorded by the request, not copied from the provider's documentation.

Request
GET http://otwartedane.gdynia.pl/api/3/action/package_list
Result
HTTP 200 · application/json · 6,681 bytes
Response time
645 ms (median of 3) · fastest 640 ms
Transport
TLSv1.3 · TLS_AES_256_GCM_SHA384 · certificate issued by Asseco Data Systems S.A.
Browser CORS
No Access-Control-Allow-Origin header — call it from a server, not the browser
Served by
nginx/1.20.2
Recorded
2026-08-10

Fields Returned

Top-level fields present in the response we captured, with the type and value we actually received.

Field Type Value received
help string (url) https://otwartedane.gdynia.pl/api/3/action/he…
success boolean true
result array [1 item]

Captured Response

Captured from a real request to http://otwartedane.gdynia.pl/api/3/action/package_list on 2026-08-10. Long arrays and nested objects are truncated to keep the shape readable.

JSON Response · Captured
{
  "help": "https://otwartedane.gdynia.pl/api/3/action/help_show?name=package_list",
  "success": true,
  "result": [
    "aktualne-czasy-przejazdu-dla-poszczegolnych-sekcji"
  ]
}

Field Reference

success Indicates whether the API request completed successfully
result List of dataset identifiers or dataset objects depending on the endpoint called

Implementation Example

Calls a real endpoint of this API. Replace any placeholder credentials with your own key.

Request
const url = "http://otwartedane.gdynia.pl/en/";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

How This API Fails

We deliberately sent this API a broken request and recorded exactly what came back on 2026-08-10. Knowing the shape of an error before you hit it makes error handling much easier to write.

HTTP 404 Requesting a path that does not exist text/html

Returned an HTML error page rather than JSON — worth knowing if your client assumes every response can be parsed as JSON.

Common Errors & Troubleshooting

Generated guidance based on this API's documentation, not observed by us. Treat it as a starting point and check against the provider's own error reference.

HTTP instead of HTTPS connection warning The Gdynia portal uses HTTP rather than HTTPS on some endpoints
This is expected for this portal; if your HTTP client enforces HTTPS, configure it to allow HTTP for this domain
Resource download fails Individual dataset file URLs may be hosted on a separate server
Follow the resource URL from the dataset metadata rather than constructing URLs manually
Polish text encoding issues Dataset fields contain Polish characters that need UTF-8 decoding
Specify UTF-8 encoding when reading response strings to correctly display characters like a, e, o, z

Measured Score Breakdown

Live HTTP request to the API endpoint

Speed 4/30
Consistency 20/20
Security 10/20
Browser access 0/15
Transparency 4/15
Endpoint Response Time 645ms

Fully tested on Aug 10, 2026

Technical Specifications

Auth No Auth
HTTPS NO
CORS UNKNOWN
Category Government
Difficulty Beginner
Endpoint last called: 2026-08-10

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