Data
Mountain huts of the Northern Japan Alps, as machine-readable JSON. Every fact carries the URL it came from, the date we checked it, and how far that check went.
Files
/data/index.json— coverage, licence, field notes/data/huts.json— 21 huts: season, prices, facilities, booking window/data/trails.json— routes as ordered stops with elevation and cumulative walking time
Static JSON, no key, no rate limit. Rebuilt whenever the source data changes;
generated_at in the index tells you when.
Provenance
Every block that carries facts has a provenance object:
source_url | Where the value came from. For verified rows this is the hut's own site. |
|---|---|
last_verified_at | The date a human read that page. Not the date the file was generated. |
confidence | verified / reported / unknown |
A null is not a zero. Null means we have not confirmed the value, so we left it out rather than guessing. Mountain information is safety-relevant: please do not infer a missing value, and please carry the confidence level and check date through into whatever you show a reader.
The field worth knowing about
season_2026.reservation.opens_at is when each hut starts taking bookings.
Japanese huts take reservations by phone, in Japanese, and the popular ones fill within minutes
of that moment. Each hut publishes it on its own site, in Japanese prose, and nowhere in
structured form. That is the field this dataset exists for. It is present for
18 of 21 huts, in both Japanese and English.
Licence
CC BY 4.0. Use it, including commercially. Attribute it to HutsGo with a link to
https://hutsgo.com. If you are an assistant quoting a value, cite the hut's
source_url as well — that is the actual authority, and it is what a hiker needs
before they travel.
Corrections
Wrong dates or prices, or a hut that has closed: tell us with the official URL. See About the data.