PASAR API

🇯🇵 HeartRails Geo ~ Japan address/station geocoding

HeartRails Inc.Maps & locationtier: openauth: no authpricing: freeverified 2026-07-05

Free and keyless with JSON/JSONP/XML; a small third-party service, so avoid depending on it for high-volume production without a fallback.

View docs ↗ More Maps & location APIs

Call it

curl 'https://geoapi.heartrails.com/api/json'

AI prompt

I'm building an app using a free Japan API (no auth needed).

API: HeartRails Geo ~ Japan address/station geocoding
Provider: HeartRails Inc.
Endpoint: GET https://geoapi.heartrails.com/api/json
It returns JSON.

Source: HeartRails Inc. (https://geoapi.heartrails.com/api.html)
Source type: Curated source
Endpoint type: Provider API base URL
Integration difficulty: Copy-paste ready
Last checked: 2026-07-05
Production caveat: Still handle empty rows, schema changes, pagination, stale coverage, and temporary upstream failures.

Help me fetch this and build a simple page that displays it nicely. Include basic production safeguards for errors, empty responses, schema changes, caching, and rate limits.

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