jgrants-mcp-serverofficial
A
licenseNot graded
qualityD
maintenanceMCP server for Japan's Jグランツ grant application system, enabling LLMs to search and retrieve subsidy information via natural language.
51
MIT
Japan Subsidy Search MCP
by easakura
Japan Subsidy Search MCP — 日本の補助金・助成金検索
Give your AI agent real-time access to Japanese government subsidies and grants.
This MCP server searches the official Japanese government subsidy database (jGrants, operated by the Digital Agency) in real time. Perfect for AI agents serving SMEs, accountants, administrative scriveners (行政書士), and consultants working with the Japanese market.
Why this server?
Japan runs thousands of subsidy programs — national, prefectural, and municipal — but the data is fragmented and Japanese-only. Foreign AI tools are effectively blind to it. This server makes the entire live database queryable by any MCP-compatible agent (Claude, ChatGPT, custom agents).
Related MCP server: @localgov-jp/mcp-server
Tools
search_subsidies
Search open subsidy programs by keyword and prefecture. Returns results sorted by application deadline with:
Days until deadline (computed automatically)
Maximum grant amount (formatted, e.g. "5億円" / "3,500万円")
Direct link to the official application page
When a prefecture filter yields zero hits, automatically reports matching programs in other regions so your agent can offer alternatives
get_subsidy_detail
Retrieve full details by subsidy ID: purpose, eligibility requirements, subsidy rate, application rounds with current deadlines, and contact information — converted from rich-text HTML into clean, LLM-ready plain text.
Example queries your agent can now answer
「東京都の会社で使える省エネ補助金、締切が近い順に教えて」
"Find manufacturing subsidies open for applications in Osaka with deadlines this quarter"
「創業支援の補助金で、従業員10人以下でも申請できるものは？」
Data source & freshness
Official jGrants API (Digital Agency of Japan). Data is fetched live on every call — no stale caches. This server adds normalization, deadline computation, region merging, and LLM-friendly formatting on top of the raw government data.
Pricing
Pay per tool call. One search or one detail retrieval = one event. No subscription, no minimum.
日本語
日本政府公式の補助金データベース（デジタル庁 jGrants）をAIエージェントからリアルタイム検索できるMCPサーバーです。締切までの残り日数計算、地域限定＋全国対象の自動マージ、AIが読みやすい整形済みテキストを提供します。士業・中小企業支援・コンサルティング向けAIに最適です。
Get started
This is a hosted (remote) MCP server, available on Apify Store:
👉 https://apify.com/e-asakura/japan-subsidy-search-mcp
The store page includes setup instructions for Claude, ChatGPT, Cursor, and any MCP-compatible client. Pay-as-you-go: $0.02 per tool call, no subscription.
Built by Edward Asakura — Japanese data infrastructure for AI agents. Part of the SEKISHO series: subsidies / laws / parliament.
Available Tools
2 toolsget_subsidy_detail補助金の詳細を取得A
補助金IDを指定して、目的・応募資格・補助率・応募期間・問い合わせ先などの詳細情報を取得する。IDはsearch_subsidiesの結果に含まれる。
Inputs: id (required).
search_subsidies日本の補助金・助成金を検索A
日本政府の公式データベース（jGrants）から補助金・助成金をリアルタイム検索する。募集中の案件を締切が近い順に返す。都道府県を指定すると、その地域限定の補助金と全国対象の補助金の両方を返す。各結果には申請ページURL・上限額・締切までの残り日数が含まれる。
Inputs: keyword (required), prefecture, max_results, only_accepting.
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
Loading tool schema changelog…
TDQS
A4.2/5.0
Scored across 2 tools
Disambiguation5/5
The two tools have clearly distinct purposes: search_subsidies for finding subsidies and get_subsidy_detail for retrieving details by ID. No overlap in functionality.
Naming Consistency5/5
Both tools use a consistent verb_noun snake_case pattern (search_subsidies, get_subsidy_detail), which makes the naming predictable and easy to understand.
Tool Count3/5
With only 2 tools, the server is minimal but still functional for its core purpose of search and detail retrieval. It could benefit from additional tools like filtering or listing categories.
Completeness4/5
The tool surface covers the essential search and detail retrieval operations for Japanese subsidies. Minor gaps exist, such as lack of filtering by amount or category, but the core workflow is complete.
Maintenance
ActivityInactive
ResponsivenessOutdated data
Related MCP Connectors
Search Japanese subsidies and public company data using J-Grants, gBizINFO, and EDINET.
Find Japanese subsidies, check eligibility with guideline citations, and fill official forms.
Japanese subsidies and grants, judged for whether a solo founder with 0 employees can apply. Daily.
Japan central + municipal subsidies (20,810 grants, 1,627 munis). 8 tools beyond Jグランツ MCP.
Related MCP Servers
- AlicenseAqualityDmaintenanceAn MCP server that provides access to Japan's central and municipal subsidies, covering over 20,000 municipal grants not exposed by official APIs, with tools for search, comparison, citation verification, and practitioner referrals.1352 npmMIT
- AlicenseNot gradedqualityDmaintenanceMCP server that enables LLMs to search and retrieve Japanese government subsidy and grant information via natural language, wrapping the Jグランツ public API.MIT
- AlicenseNot gradedqualityCmaintenanceEnables AI assistants to search Japanese government subsidies and grants, including archived closed calls and recurring application periods based on historical data.9 npm1MIT
