Japanese/Chinese localization check for game/app string tables.
POST /api/loccheck with a UTF-8 CSV (columns key,source,target). $0.01 USDC via x402 (Base or Solana).
Flags blank/untranslated targets, placeholder mismatches, duplicate keys, half-width punctuation, "..." vs "…", leftover English.
Free trial (first 5 rows, no payment): POST /api/loccheck/trial

Japanese calendar API: GET /api/jpdate?date=2026-11-02 ($0.001 USDC via x402). 和暦⇄西暦 (令和/平成/昭和/大正/明治, R8.11.2, 元年),
national holidays from the Cabinet Office list (1955-2027), business-day check,
add_business_days=N, to=DATE (business days between), yearend=none|gov|bank (12/29-1/3 or 12/31-1/3 closures). JSON out.
Free trial (date info only, no add/to): GET /api/jpdate/trial?date=...

Japanese postal code API: GET /api/zip?zip=100-0001 ($0.001 USDC via x402), or zips=a,b,c (up to 100 per call).
Returns prefecture/city/town in kanji, kana and romaji plus the JIS municipality code; accepts 〒, hyphens and full-width digits.
Data: Japan Post (120721 codes, updated 2026-10-30). Free trial (prefecture + city only): GET /api/zip/trial?zip=...

Japanese bank transfer API: GET /api/bank?bank=0005&branch=新宿&name=株式会社サンプル&account=12345 ($0.001 USDC via x402).
Bank/branch code (全銀コード) or name to name/kana/romaji, plus 振込名義 conversion to zengin half-width kana (ｶ) ﾕ) (ﾄﾞ etc.) with invalid-character flags.
Data: zengin-code (MIT, 1146 banks, 28944 branches). Free trial (bank name only): GET /api/bank/trial?bank=0005