City, Helsinki

API

Open data API for Helsinki city government datasets

Overview

The Helsinki City Open Data API provides RESTful access to diverse open datasets from the Helsinki region government. Endpoints cover domains like transportation (public transit, traffic), environment (air quality, waste management), culture (events, libraries), and urban planning. Responses are available in JSON, CSV, or XML formats depending on the dataset. Use cases include building citizen apps for transit tracking, environmental monitoring tools, cultural event aggregators, or research projects analyzing urban trends in Helsinki.

Example Integration (JavaScript)

script.js JS


fetch('https://hri.fi/en_gb/')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful interfaces
Multiple data formats (JSON, CSV, XML)
No API key for most datasets
Wide domain coverage
Filtering capabilities

Frequently Asked Questions

? Is City, Helsinki API free to use?

Yes, all datasets are available for free under open licenses, allowing unrestricted use, modification, and distribution.

? Does it require an API Key?

Most datasets do not require an API key. However, high-volume or specialized datasets may need registration or an API key to prevent abuse.

? What is the response format?

Response formats vary by dataset but commonly include JSON (structured data), CSV (tabular data), and XML. Each dataset’s docs specify supported formats.

Top Alternatives

City of Amsterdam Open Data API Search Google

London Datastore API Search Google

Berlin Open Data Portal API Search Google

Tool Info

Pricing Free

Category Government

Platform Public API

Pros

⊕ Free open access
⊕ Comprehensive city datasets
⊕ Diverse data formats
⊕ Well-documented
⊕ Supports citizen-centric apps

Cons

⊖ Some datasets have infrequent updates
⊖ Documentation varies by dataset
⊖ Rate limits for high-volume requests
⊖ Limited real-time data in some domains