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  3. Ja Normalize
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Ja Normalize

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Holidays/business days for 200+ countries; Japanese address, name, bank and company normalization.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

One-click editor setup isn’t available for this listing yet — we don’t have a confirmed install command, and we’d rather show nothing than point your editor at the wrong package or host. Follow the project’s own setup instructions, linked above.

Manual Client & Custom JSON ConfigExpand JSON ▾
No confirmed setup config for this listing yet. We only publish a config block when the install details come from the project itself — its README, its docs, or a verified owner. We haven’t found those for ja-normalize, and we’d rather show nothing than a guess you’d paste into your client. Follow the project’s own setup instructions for the current steps.
Install Directory Badge Claim listing Alternatives💰 More in Finance & Fintech

Documentation Overview

x402-ja-api

日本語テキストを「構造化」して返すAPI群。AIエージェントが x402 プロトコルで1コールごとにUSDCを払って使う。

Endpoint価格何をするか
GET /v1/holidays?country=DE&year=2026&region=BY$0.005200カ国以上の祝日(州・地域別、英語名+現地名、振替フラグ)。date-holidays データ
GET /v1/business-day?country=SA&date=&add=$0.005任意の国の営業日計算(その国の週末=金土/金/土 も考慮)
GET /v1/holidays/countries[?country=US]無料対応国一覧/地域コード一覧
GET /v1/jp/crypto/ticker?symbol=BTC$0.005bitFlyer/Coincheck/GMO/bitbank のJPY価格、中央値・乖離、USD参照、USD/JPY、円プレミアム(対USD乖離率)。10秒キャッシュ
GET /v1/jp/holidays?year=2026$0.005国民の祝日一覧(振替休日・国民の休日込み、内閣府公式CSV、1955〜)
GET /v1/jp/business-day?date=&add=&calendar=$0.005営業日判定・N営業日後・月末営業日(calendar=bank で12/31〜1/3も休業扱い)
GET /v1/jp/bank/resolve?bank=&branch=$0.02銀行名・支店名の揺れ→金融機関コード・支店コード(候補+確信度、全銀用半角カナ付き。zengin-code 1,146機関/29,000支店)
GET /v1/jp/bank/lookup?bankCode=&branchCode=$0.005コード→正式名・カナ・半角カナ・種別
GET /v1/jp/name/parse?name=&kana=$0.02姓名分割(辞書12k姓/76k名、分割99.7%)+読み候補(確信度付き)+パスポート式ローマ字。kana を渡せば決定的
GET /v1/jp/name/romaji?kana=$0.005かな→ヘボン式(外務省パスポート規則:長音省略・ン→M・促音・CH前T)+OH式・マクロン・厳密表記
POST /v1/address/normalize$0.02住所の表記揺れを吸収し pref/city/town/addr + 緯度経度を返す(デジタル庁アドレス・ベース・レジストリ / Geolonia)
POST /v1/text/normalize$0.01全角→半角、和暦→ISO日付、電話番号(E.164)/郵便番号/メール抽出
POST /v1/company/resolve$0.03社名の揺れ→法人番号・正式商号・本店所在地・インボイス番号形式(国税庁 法人番号Web-API)

無料で読めるもの: GET / GET /health GET /openapi.json GET /.well-known/x402 GET /llms.txt GET /v1/holidays/countries

売上ダッシュボード(運営者専用 / STATS_TOKEN 必須): https://x402-ja-api.onrender.com/stats — 累計受取USDC・件数・支払元数・日別・直近入金(オンチェーン、Blockscout)+起動後のエンドポイント別 paid/free/402 カウンタ。?format=json で機械向け。

動かす

bash
cp .env.example .env      # PAY_TO_ADDRESS を自分のウォレットに
npm install
npm run dev               # http://localhost:4021
npm run doctor            # 発見用ドキュメントと402応答の自己診断
npm run check             # 型チェック + テスト

未払いで叩くと 402 と PAYMENT-REQUIRED ヘッダ(base64 JSON)が返る:

Terminal
curl -i -X POST localhost:4021/v1/text/normalize \
  -H 'Content-Type: application/json' \
  -d '{"text":"令和5年4月1日 TEL 03-1234-5678"}'

支払いを含むE2E(テストネット・買い手用の別ウォレットが必要):

bash
# Base Sepolia の USDC を https://faucet.circle.com で受け取っておく
BUYER_PRIVATE_KEY=0x... npm run probe -- http://localhost:4021 /v1/text/normalize

本番に出す手順

  1. ウォレット: 受取専用のEVMアドレスを新規作成し PAY_TO_ADDRESS に設定(秘密鍵はサーバーに置かない。受け取るだけなので不要)
  2. Coinbase CDP: https://portal.cdp.coinbase.com でAPIキーを発行 → CDP_API_KEY_ID / CDP_API_KEY_SECRET、X402_NETWORK=base (facilitator手数料: 1,000件まで無料、以降 $0.001/件。ガス代はfacilitator負担)
  3. 法人番号API: https://www.houjin-bangou.nta.go.jp/webapi/ でアプリケーションIDを申請 → HOJIN_APP_ID 発行まで2〜4週間。届くまで /v1/company/resolve は 503 を返す
  4. デプロイ: 恒久的なドメインが必須(x402scanはngrok等のトンネルを拒否)。Render / Fly.io / Railway の無料〜最小プランで十分。PUBLIC_BASE_URL を実URLに
  5. 自己診断: npm run doctor -- https://your-domain
  6. 登録(発見されるため)
    • x402scan: POST https://www.x402scan.com/api/x402/registry/register-origin {"origin":"https://your-domain"} または UI から
    • CDP Bazaar: 最初の決済が通ると自動索引(declareDiscoveryExtension 済み)
    • Circle Agent Marketplace: https://agents.circle.com/services の申請フォーム
    • x402Relay(日本): https://x402relay.jp 系のカタログに申請

構成

Code
src/
  config.ts            環境変数の検証(zod)。base 指定時は CDP キー必須
  lib/text.ts          純関数: 半角化 / 和暦 / 電話 / 郵便番号 / メール
  lib/address.ts       Geolonia 住所正規化のラッパー
  lib/csv.ts, hojin.ts 国税庁 Web-API v4 クライアント + CSV パーサ + チェックデジット
  lib/company.ts       名寄せ・ランキング
  lib/calendar.ts      日本の祝日・営業日計算(data/holidays.json を読む)
  lib/world-calendar.ts 世界の祝日・営業日(date-holidays、国別週末テーブル)
  lib/jpy-crypto.ts    国内取引所のJPY価格集約+円プレミアム(公開API、部分失敗許容)
  lib/bank.ts          銀行・支店コード解決(zengin-code、表記揺れ・カナ・半角カナ)
  lib/romaji.ts        かな→ヘボン式ローマ字(パスポート規則)
  lib/name.ts          姓名分割・読み候補(data/names/dict.json)
  x402/catalog.ts      売り物の定義(価格・説明・スキーマ)= 唯一の正
  x402/server.ts       facilitator 選択・ルート設定・Bazaar 拡張
  routes/api.ts        有料ハンドラ(zod で入力検証)
  routes/discovery.ts  /openapi.json, /.well-known/x402, /health
  app.ts               Express 組み立て(テストは paywall:false / facilitator スタブ)
scripts/
  update-holidays.ts   内閣府CSV → data/holidays.json(年1回、翌年分が出る2月頃に実行)
  build-name-dict.ts   mecab-ipadic 人名 + MITデータセット → data/names/dict.json
  doctor.ts            デプロイ後の自己診断
  probe.ts             実際に払うクライアント

注意(法務・税務)

  • USDC の受取自体に登録は不要。受け取った対価は円換算で雑所得、保有中の為替差損益も雑所得
  • 法人番号データ利用時は「このサービスは国税庁法人番号システムWeb-API機能を利用して取得した情報をもとに作成しているが、サービスの内容は国税庁によって保証されたものではない」旨の表示が必要(/ のレスポンスに追加予定)
  • 住所データは Geolonia(アドレス・ベース・レジストリ由来)。ライブラリの利用条件に従う
  • 祝日データは内閣府「国民の祝日」CSV(政府標準利用規約 v2.0、出典明記)
  • 世界の祝日は date-holidays(コードISC、データCC-BY-3.0、出典明記)
  • 銀行・支店データは zengin-code(MIT、公開情報から自動収集)。npm update zengin-code で追従
  • 人名辞書は mecab-ipadic(NAISTライセンス、data/names/IPADIC-COPYING.txt)と japanese-personal-name-dataset(MIT)由来

次にやること

  • PAY_TO_ADDRESS を本物のウォレットに
  • 法人番号 Web-API のアプリケーションID申請(リードタイムが一番長いので最初に)
  • Render/Fly にデプロイ、doctor 通す
  • x402scan / Circle / x402Relay に登録
  • 死活監視(落ちたら通知)— 登録済みルートの79%が死んでいる市場なので、生きているだけで上位
  • インボイス登録番号の有効性検証(国税庁 適格請求書発行事業者公表システム Web-API、別途ID申請)

Read the full README →View source on GitHub →

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Frequently Asked Questions about Ja Normalize

We don't have a confirmed install command for ja-normalize yet, so we don't publish a generated one — a guessed package name would point at the wrong package or none at all. Follow the project's own README or setup instructions (https://github.com/KojimaHyui01/x402-ja-api) for the current steps.

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Technical Specs & Signals

Category💰Finance & Fintech
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Last updatedSep 28, 2026
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