Japan Law Amendment Watch – e-Gov 法令API

法改正を、施行日の前に・どの条文が変わるかまで。 Know which Japanese laws change, when, and which articles – before the amendment takes effect.

List the laws your business depends on – 個人情報保護法, 会社法, 労働基準法, 電気通信事業法, any cabinet order or ministerial ordinance – and schedule this Actor weekly. For each law you get:

• Upcoming amendments that are promulgated but not yet in force, with enforcement date and countdown (あと7日) and the amending law's name
• Which articles change compared with the text in force today – 第2条 changed, 第3条の2 added, 第10条 deleted – with the wording around the first difference (before / after)
• New since last run: amendments that appeared in the database since the previous run are flagged, so a weekly schedule only pings you when something new was promulgated

Example (real data, 2026-10-27):

{
  "law": "個人情報の保護に関する法律",
  "abbrev": "個人情報保護法",
  "status": "amendment-scheduled",
  "summary": "2026-11-02（あと7日） … – 2か条が変更 | 2027-01-17（あと83日） … | …",
  "upcomingAmendments": [{
    "enforcementDate": "2026-11-02", "daysUntil": 7, "amendmentLaw": "…",
    "changedArticlesCount": 2,
    "changedArticles": [{ "article": "第2条", "change": "changed",
      "before": "…内閣に置かれる機関（内閣府を除く。）…", "after": "…内閣に置かれる機関（内閣府及び防災庁を除く。）…" }]
  }],
  "newSinceLastRun": [],
  "url": "https://laws.e-gov.go.jp/law/415AC0000000057",
  "source": "出典：e-Gov法令検索（https://laws.e-gov.go.jp/law/415AC0000000057）を加工して作成"
}

Amendments that only touch supplementary provisions or tables are reported as 本則の条文は変更なし.

Who it is for

Compliance and legal teams, 社労士・行政書士・税理士 offices, SaaS companies tracking regulations (個人情報, 電気通信, 特商法), and anyone who has missed an enforcement date before.

Data source and terms

Uses only the official e-Gov 法令API (v2) operated by the Digital Agency – no scraping. One request at a time, at least 1 second apart. The site's content is provided under the Public Data License 1.0 (PDL1.0), which allows reuse including commercial use with attribution; statutes themselves are not subject to copyright in Japan (著作権法第13条). Each row carries a ready-made attribution in source – keep it when you republish the data. Comparisons and excerpts are produced by this Actor, not by the government. This is not legal advice; always check the official text before acting.

Input

{ "laws": ["個人情報保護法", "会社法", "労働基準法"], "diffUpcoming": 2 }

Pricing

Pay per event, platform usage included:

Event	Price
Actor start	$0.01 per run
law-checked – one law checked	$5.00 per 1,000 laws ($0.005 each)

Example: 10 laws checked weekly ≈ 4 × ($0.01 + 10 × $0.005) = $0.24 per month. Laws not found are free.

日本語での説明

指定した法令（法律・政令・府省令）を毎週チェックし、公布済みで施行前の改正について、施行日と残り日数、今の条文と比べてどの条が変わるか（変更・追加・削除と、変わった部分の前後の文）を知らせます。前回の実行から新しく公布された改正には「新着」の印を付けます。デジタル庁の公式 e-Gov 法令API だけを使い、出典の記載例を各行に付けています。法的な助言ではありません。

料金: 1回 $0.01 ＋ 1法令 $0.005。