Use Buy Houses Japan in Claude

Add it to Claude

Server URL:

https://api.buyhouses.jp/mcp

The button opens Claude's "Add custom connector" form with the name and URL filled in; review them and confirm. Or, in Claude, open Settings, then Connectors, choose "Add custom connector" and paste the URL. Then choose Connect: Claude opens the Buy Houses Japan sign-in.

Sign in when you connect

• Connecting asks you to sign in to Buy Houses Japan. With no account yet, a free one is made as you sign in, with Google or with your email address and a one-time sign-in link we email you. No card, no plan.
• You then see what Claude will be able to do and choose Allow or Cancel.
• Claude receives an access token that reads our listings on behalf of your account for one hour, and a refresh token to get the next one. It never receives your password. The tools return the same facts any visitor sees on buyhouses.jp.
• To disconnect, remove the connector in Claude (Settings, then Connectors). A sign-in Claude does not use for 30 days ends on its own, and we can end one at once if you write to us.

Tools

• search_homes Searches detached houses for sale by prefecture, city or town, asking price in yen, floor and land area, bedrooms, year built, walk to a train station, parking, official hazard zones and listing date. Up to 25 homes per call.
• get_home One home's facts: price, location, layout, floor and land area, year built, land rights, zoning, parking, nearby stations, hazard zones, and when it was listed and last confirmed online.
• get_prefecture_price_summary Asking prices in one prefecture: how many houses, the median and middle range in yen, how many under 5 million yen, how many built in 1980 or earlier, and typical floor and land area.

Things to ask

• Find detached houses in Nagano under 10 million yen with at least 200 m² of land.
• Show me houses in Onomichi within a 15 minute walk of a station, cheapest first.
• Compare house prices in Hokkaido and Okinawa, then list three homes under 60,000 US dollars outside flood and tsunami zones.

Prices are in Japanese yen. Claude converts other currencies before it searches.

Where the listings come from

The homes are detached houses for sale published on Japanese real estate portals, mainly @nifty 不動産 (myhome.nifty.com), which gathers listings from many agencies and listing sites, and Mynest (Century 21 Kawaguchi, Yamaguchi). New listings arrive every hour; a daily check removes homes whose source page is gone, and each home shows when it was last confirmed online. Hazard zones come from the Geospatial Information Authority of Japan hazard maps. Always confirm a home's details with the listing agent before you act on them.

What we log

We do not receive your conversation with Claude, only each tool call's filters or home id, which we use to answer it. For every call we keep one daily count: the tool name, the day (UTC), how many results it returned, a response-time range, the names of the filters used, and the prefecture code, sort order and hazard types chosen. No search text, prices, place names, IP address or browser details are stored with it, and it is not linked to anyone. For the sign-in we keep the account you allowed, which Claude connection it was given to and when, and the tokens only as one-way hashes, until they expire. We also count sign-ins per day (asked, allowed, cancelled, new accounts) with no account or person in the count. Details are in our privacy policy.

Help

Questions or a wrong result: write to urbano@urbanodx.com or use the contact page.