不動産競売構造化データハブ — Japan real-estate auctions MCP server

MCP serverDev tools

This integration connects your AI to Japanese court-run real-estate auctions, known as BIT. Once added, your AI can look up the roughly 1,480 active auction listings through its five tools, and the underlying data is openly licensed under CC BY 4.0.

Use 不動産競売構造化データハブ — Japan real-estate auctions MCP server in Claude, ChatGPT or Ahel Desktop

Free. Sign in, add 不動産競売構造化データハブ — Japan real-estate auctions MCP server and connect your AI. About a minute.

Claude ChatGPT Ahel Desktop

Also: Claude Code · Cursor · Codex

Then ask your AI: use 不動産競売構造化データハブ to search auctions

No key or account is asked for. Not verified by us yet: Ahel has not run a call through it.

Details

Available today. Use it from your connected AI after setup.

No key or account is asked for. Not verified by us yet: Ahel has not run a call through it.

Add the integration, then ask your AI about Japanese court-auction properties, for example what is currently listed.

不動産競売構造化データハブ — Japan real-estate auctions MCP serverStart free

What your AI can do with it

Look up Japanese court-run real-estate auction (BIT) listings
Browse the roughly 1,480 active auction listings
Answer questions about properties currently up for court auction in Japan
Pull auction information using the integration's five tools

Install 不動産競売構造化データハブ — Japan real-estate auctions MCP server

The server’s own address, for the clients that take one directly. Or connect Ahel once and every client you use reads it from one address, with the account kept on Ahel rather than in each client’s config.

Claude Code
claude mcp add --transport http --scope user japan-real-estate-auctions-mcp-s 'https://keibai-hub.com/mcp-auctions'
Run it once in your project, then open /mcp to approve any sign-in the server asks for.
Claude Desktop
https://keibai-hub.com/mcp-auctions
Add a custom connector in Settings, paste this address, and approve the sign-in.
Cursor
cursor://anysphere.cursor-deeplink/mcp/install?name=japan-real-estate-auctions-mcp-s&config=eyJ1cmwiOiJodHRwczovL2tlaWJhaS1odWIuY29tL21jcC1hdWN0aW9ucyJ9
Open the link and Cursor adds the server at that address.
ChatGPT
https://keibai-hub.com/mcp-auctions
In Settings, enable Developer mode, create an MCP app, and paste this address. Your plan and workspace must allow custom apps.
Codex
codex mcp add japan-real-estate-auctions-mcp-s --url 'https://keibai-hub.com/mcp-auctions'
Run it once, then sign in with codex mcp login japan-real-estate-auctions-mcp-s if the server asks for an account.

From the project's README

As published by keibai-hub/keibai-hub-mcp in README.md.

Japanese court-run real-estate auction registry (BIT, bit.courts.go.jp) re-published as a structured Remote MCP server.

~1,480 active auctions
46 prefectures
110+ district courts and branches
Updated twice daily (06:07 / 18:07 JST)

Connect

Remote MCP endpoint (Streamable HTTP):

https://keibai-hub.com/mcp-auctions

Claude Desktop / Cursor / Cline

Add to your mcp_servers config:

{
  "keibai-hub": {
    "url": "https://keibai-hub.com/mcp-auctions"
  }
}

Smithery one-click

Tools (5)

Tool	Description
`search_auctions`	Search by keyword (Japanese FTS over title/address) / prefecture / court_code / property_type / price range / bid_period_only
`get_auction_detail`	Fetch one auction by case_id (e.g. `bit_00000078922`) — returns case_number, court, price, bid period, photos, etc.
`list_upcoming_sales`	List auctions whose opening_date falls within the next N days (default 14, max 90)
`get_court_directory`	Look up a Japanese district court (本庁 or 支部) by code
`find_practitioner_for_auction`	Returns 司法書士 / 弁護士 / 不動産鑑定士 / 土地家屋調査士 federation directories for a given auction stage (post_acquisition / pre_bid / eviction / boundary_dispute)

Data sources & license

Source: BIT (https://www.bit.courts.go.jp/, 最高裁判所) under 民事執行法 64 条 5 項公示原則
Structuring layer license: CC BY 4.0 — attribute the canonical _canonical URL of each record
This service is information-only and does not act as a paid intermediary
BIT URLs are session-bound; use the bit_lookup_hint field (case_number) to search BIT manually

REST API (no MCP)

If you prefer plain HTTP without MCP:

GET https://keibai-hub.com/api/auctions/search?prefecture=東京都&limit=20
GET https://keibai-hub.com/api/auctions/{case_id}
GET https://keibai-hub.com/api/auctions/{case_id}.md (Markdown variant, token-efficient)
GET https://keibai-hub.com/api/auctions/coverage
GET https://keibai-hub.com/api/auctions/upcoming?days_ahead=14
GET https://keibai-hub.com/.well-known/coverage-auctions.json
GET https://keibai-hub.com/llms.txt

Contact

Issues and feature requests via GitHub issues.

License

MIT (this repository's metadata only — the auction data carries CC BY 4.0).

Tools it offers (5)

What this server listed when Ahel dialed its public endpoint in Oct 2026, with no key and no account of yours. The names are the server’s own.

search_auctions
get_auction_detail
list_upcoming_sales
get_court_directory
find_practitioner_for_auction

Signals

Last commit: May 2026

Advanced

Delivery: keibai-hub-mcp MCP server → your Ahel connector (mcp.ahel.ai) → your AI.
Item type: mcp-server
Key: io-github-keibai-hub-keibai-hub-mcp
Source: github.com/keibai-hub/keibai-hub-mcp
Hosted endpoint: https://keibai-hub.com/mcp-auctions

github.com/keibai-hub/keibai-hub-mcp

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不動産競売 構造化データハブ — Japan real-estate auctions MCP server

Use 不動産競売 構造化データハブ — Japan real-estate auctions MCP server in Claude, ChatGPT or Ahel Desktop