japan-data-mcp
Japanese law, corporation & statistics data as MCP, normalized to English with source attribution.
使うべきか
品質と安全性
ツール定義とプロトコルへの準拠に関する自動分析に基づいています。
コンテキストコスト
これは、サーバーのツールがモデルのコンテキストに読み込まれるたびに消費されるおおよそのトークン数です。数が多いほど、ほかのタスクに使える注意が減ります。
インストール
ワンクリックインストール
これを `claude_desktop_config.json` ファイルに追加してください:
{
"mcpServers": {
"japan-data-mcp": {
"url": "https://japan-data-mcp.netlify.app/mcp"
}
}
}リモートエンドポイント
https://japan-data-mcp.netlify.app/mcpstreamable-httpできること
ツール一覧
ツール（4）
🟢search_japanese_law(keyword, limit)
Search Japanese laws and regulations by keyword and return English-normalized metadata (law id, type, era, promulgation date, category) plus the matched Japanese text. No API key required. Japanese keywords match best; the underlying source is full-text Japanese.
入力スキーマ
{
"type": "object",
"properties": {
"keyword": {
"type": "string",
"description": "Search term. Japanese matches the source text directly; English is best-effort."
},
"limit": {
"type": "integer",
"description": "Max results (1-20).",
"default": 5
}
},
"required": [
"keyword"
]
}🟢get_law_text(law_id, article, max_chars)
Fetch the original Japanese text of a law by its law_id or revision_id (as returned by search_japanese_law). Optionally extract a single article. Returns the authentic Japanese legal text with English-normalized metadata and the required source attribution. No API key required. Typical flow: search_japanese_law -> get_law_text.
入力スキーマ
{
"type": "object",
"properties": {
"law_id": {
"type": "string",
"description": "law_id (e.g. \"321CONSTITUTION\") or revision_id from search_japanese_law results."
},
"article": {
"type": "string",
"description": "Optional article number in Arabic numerals as e-Gov numbers them, e.g. \"9\", or \"32_2\" for Article 32-2. Omit to get the whole law (truncated to max_chars)."
},
"max_chars": {
"type": "integer",
"description": "Max characters of Japanese text to return (200-20000).",
"default": 4000
}
},
"required": [
"law_id"
]
}🟢search_corporation(name, corporate_number)
Look up a Japanese corporation by partial name or 13-digit corporate number, returning English-keyed records (corporate number, name, address). Requires a free National Tax Agency application ID.
入力スキーマ
{
"type": "object",
"properties": {
"name": {
"type": "string",
"description": "Partial company name (Japanese)."
},
"corporate_number": {
"type": "string",
"description": "13-digit corporate number."
}
}
}🟢search_statistics(keyword, limit)
Search Japanese official statistics tables (e-Stat) by keyword and return English-keyed table metadata (id, title, organization, dates). Requires a free e-Stat application ID.
入力スキーマ
{
"type": "object",
"properties": {
"keyword": {
"type": "string",
"description": "Search term for statistics tables."
},
"limit": {
"type": "integer",
"description": "Max results (1-20).",
"default": 5
}
},
"required": [
"keyword"
]
}コミュニティ
エビデンス