Transport for Finland API
Overview
Digitransit is Finland's national open public transport platform, offering a GraphQL API for routing, stop information, and real-time data across Finnish cities. No API key is required, and the GraphQL interface lets you request exactly the data you need. It is a great modern API for learning GraphQL while working with real transit data.
Beginner Tip
This API uses GraphQL instead of REST — you send POST requests with a query body to the endpoint. Use the GraphQL playground at api.digitransit.fi/graphiql to explore and test queries interactively before writing code.
Available Data
The kind of data this API exposes, based on its documentation. We could not call the endpoint to confirm the exact field names.
Example Response
Illustrative shape only — we were not able to call this endpoint (it requires credentials or exposes no public sample URL), so the fields below show the kind of data this API returns rather than a recorded response.
{
"route": "Line 1",
"origin": "Station A",
"destination": "Station B",
"departure": "08:30",
"arrival": "09:15",
"status": "On Time",
"delays_min": 0
} Field Reference
data.stops List of transit stops matching your query gtfsId GTFS-format unique identifier for the stop name Human-readable name of the stop lat Latitude coordinate of the stop lon Longitude coordinate of the stop Implementation Example
Calls a real endpoint of this API. Replace any placeholder credentials with your own key.
const url = "https://api.digitransit.fi/routing/v1/routers/finland/index/graphql";
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.
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.
Metadata Score Breakdown
Estimated from metadata — endpoint not independently tested
Metadata estimate · endpoint not independently tested
Technical Specifications
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