Open Data & Libraries
yoyaqu uses the following open data, external APIs, and open-source libraries. We are grateful to all providers and contributors.
Last updated: 2026-05-14
Open Data
Nearest-station suggestion list at signup (~9,000 major stations nationwide, with phonetic readings)
Primary source of the master data above
External APIs
Postal code → address autofill at signup
Address → latitude/longitude (geocoding) when publishing a salon page, once per salon
Libraries
Web framework
Cloudflare Pages SSR adapter
CSS utilities
Icons
Salon page QR code generation
OG image SVG → PNG conversion (at build time)
JWT / auth token handling
Schema validation
E2E testing (build/QA only)
Device identification (login anomaly detection)
Each library and dataset is used in accordance with its respective license terms. Derivative works containing data distributed under CC BY-SA 4.0 (the station master data) are provided as part of this service under the same license terms.
If you find any omission or error, please contact [email protected].