japan-data-mcp
Japanese law, corporation & statistics data as MCP, normalized to English with source attribution.
Should I use this
Quality & Safety
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"japan-data-mcp": {
"url": "https://japan-data-mcp.netlify.app/mcp"
}
}
}Remote endpoints
https://japan-data-mcp.netlify.app/mcpstreamable-httpWhat it can do
Tool inventory
Tools (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.
Input Schema
{
"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.
Input Schema
{
"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.
Input Schema
{
"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.
Input Schema
{
"type": "object",
"properties": {
"keyword": {
"type": "string",
"description": "Search term for statistics tables."
},
"limit": {
"type": "integer",
"description": "Max results (1-20).",
"default": 5
}
},
"required": [
"keyword"
]
}Community
Evidence