Japan Subsidy Search

io.github.easakuraPublished by GitHub account easakurav1.0.0Updated Oct 24, 2026

Search Japanese government subsidies (official jGrants data): deadlines, amounts, eligibility.

VerifiedStreamable HTTPWeb executableWeb Search & ScrapingBusiness & Commerce

Overview

AI-generated overview

Remote MCP server that lets an assistant search live Japanese government subsidy data (jGrants) by keyword and prefecture, with deadlines and amounts.

What you can do
  • Search open subsidy programs by keyword and prefecture, sorted by application deadline with days remaining and maximum grant amounts
  • Fall back to programs in other regions when a prefecture filter returns no hits
  • Retrieve full details for one subsidy by ID: purpose, eligibility, subsidy rate, application rounds and contact information
  • Return official application links and HTML converted into plain text suited to an assistant
When to use it
Useful when an assistant helps SMEs, accountants, administrative scriveners or consultants find Japanese national, prefectural or municipal subsidies and check eligibility and deadlines. It is aimed at Japanese-market questions where the source data is Japanese-only and fragmented.
Requirements
A remote MCP endpoint; no local runtime or package install. The README says it is hosted and available through the Apify Store, and that usage is billed per tool call, so an Apify account or access arrangement is likely needed. Network access to the endpoint and to the official jGrants data source.
Before you install
Usage is pay-per-call (the README states $0.02 per tool call, one search or one detail retrieval each), so repeated queries cost money. Queries and results pass through a third-party hosted service and the official government API. Results are informational; verify deadlines and eligibility on the official application pages before acting.

Installation

In SourceWeft

  1. Open Japan Subsidy Search in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.github.easakura%2Fjapan-subsidy-search-mcp/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "japan-subsidy-search": {
      "type": "http",
      "url": "https://hojokin-mcp.easakura.workers.dev/mcp"
    }
  }
}

README

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).

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.

Source: README.md at commit ee0595a

Tools

0
SourceWeft has not read this server's tools yet.

Version history

1
  1. v1.0.0LatestSep 16, 2026

Score

85% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts