# sodan-hub.network / cd-nt Data Hub
> Open data hub for Japanese public and regional information, organized as cartridges

Curated index for LLM agents and crawlers. Human UI at `/lab/cassette` (SPA). Machine-readable record data is served as Markdown at `.md` URLs.

## Cartridges
- [Dam DB](https://cd-nt.com/lab/cassette/dam.md?lang=en): Dam and water infrastructure related data.
- [feature_requests](https://cd-nt.com/lab/cassette/feature_requests.md?lang=en): 匿名の機能リクエスト受付。メールアドレス等の連絡先は収集しません。
- [Fishing Spots DB](https://cd-nt.com/lab/cassette/fishing_spots.md?lang=en): Sea fishing locations and catch reports across Japan.
- [lure](https://cd-nt.com/lab/cassette/lure.md?lang=en): 国内外メーカーのハード／ソフトルアー製品情報。JAN、製品コード、希望小売価格、仕様、製品ページを収録。
- [Managed Fishing Spots DB](https://cd-nt.com/lab/cassette/managed_fishing_spots.md?lang=en): Managed fishing ponds and pay-to-fish venues in Japan.
- [Public Institutions DB](https://cd-nt.com/lab/cassette/municipal.md?lang=en): Database of Japanese municipal and prefectural contact desks, support programs, and subsidies.
- [portal](https://cd-nt.com/lab/cassette/portal.md?lang=en): カセットの選び方・使い方・接続の案内。ドメインデータを持たないハブ用カセット。
- [Schools DB](https://cd-nt.com/lab/cassette/schools.md?lang=en): Database of schools in Japan (elementary, junior high, high schools, etc.).
- [tackle](https://cd-nt.com/lab/cassette/tackle.md?lang=en): 国内外メーカーのリール／ロッド製品情報。JAN・UPC、製品コード、希望小売価格、仕様、製品ページを収録。

## Record details
- `https://cd-nt.com/lab/cassette/{cartridge}/{id}.md`
- English: append `?lang=en` (Gemma machine translation, cached)

## Optional
- [llms.txt (日本語)](https://cd-nt.com/llms.txt)
- [llms-en.txt (English)](https://cd-nt.com/llms-en.txt)
- [Dashboard SPA](https://cd-nt.com/lab/cassette)
- [sitemap](https://cd-nt.com/sitemap-index.xml)

## Citation
Cite the official source URL on each record when reusing data.