Summary
Connects Claude to Japan's official court-run real estate auction registry (BIT) with five tools for searching, filtering, and retrieving structured auction data. You can search across ~1,480 active listings by prefecture, court, property type, price range, or Japanese keyword, pull full case details including photos and bid periods, list upcoming sales within a rolling window, and look up court codes or professional practitioner directories for post-acquisition legal work. Data refreshes twice daily and is published under CC BY 4.0. Useful if you're building tooling around Japanese real estate auctions, need programmatic access to court sale data, or want LLM-friendly structured alternatives to the session-bound BIT interface.
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不動産競売 構造化データハブ — Japan real-estate auctions MCP server
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
_canonicalURL 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_hintfield (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=20GET 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/coverageGET https://keibai-hub.com/api/auctions/upcoming?days_ahead=14GET https://keibai-hub.com/.well-known/coverage-auctions.jsonGET 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).
Featured
Keep your Mac awake while Claude Code and 40+ AI agents run. Sleeps when they're idle.
One time payment $9 →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →On Capafy, your Skill runs online 24/7 as an agent product, and you get paid every time someone uses it.
Start earning →