UR Manager
Save the UR apartment you're looking for — area, rent, layout, walk time — and get an email when a matching room opens up.
Spring Boot · Azure · TerraformLive · Invite only · I use it
UR Check
UR Check searches vacancies in UR rental housing in Tokyo and the surrounding Kanto area, checks every area three times a day, and records which rooms are new, relisted or gone. The website and AI assistants, through MCP, use the same conditions and history. I built it to find my own next apartment.
- Type
- Web app + MCP server (Japanese UI)
- Period
- Oct 2026
- Runs on
- AWS Lightsail, Sydney · Docker Compose · Cloudflare Tunnel
About
When I was getting ready to move, I started looking at UR rentals. UR is first come, first served, and a good room can disappear almost as soon as it's listed. The official site has no alerts, so I was checking it by hand every day. I built something to do the watching for me, and I use it for real.
The first version was UR Manager, a conventional web service: save your conditions and get an email when a matching room shows up. It worked well, yet I kept catching myself asking ChatGPT what it thought of a listing. So I built UR MCP App next, an MCP server that hands the AI accurate UR data. Searches are in plain language, rooms show up as cards in the chat, and alerts and scheduling moved into the AI app.
Then every improvement to the core meant touching both projects. I didn't want that, so I merged them into one web service that supports MCP. The website and the AI now share one service layer, one set of conditions and one history. There's no public sign-up: accounts go to the people I invite. For everyone else there's a demo that runs in the browser with made-up rooms.
What it does
- Search
- One area at a time, by rent, floor space, layout, walk to a station without a bus, and no ground floor. Up to 50 rooms by monthly cost.
- Saved conditions
- Save several named conditions, each with several areas and preferred stations per area. Every edit is versioned, and a condition can be paused.
- What changed
- Every area is checked three times a day. Rooms are tracked as new, relisted or gone, and rooms that came and went between checks are listed too.
- AI assistants (MCP)
- Sign in with OAuth, then search, read changes and manage conditions in the chat, with rooms shown as cards. Alerts come from a scheduled task in the AI app.
- Sharing
- An eight-digit code copies a condition to another user. It expires after seven days and can be withdrawn.
- Admin screen
- Issue, reset and suspend accounts, and register the AI apps that may connect. A new account comes with a message that has the sign-in and AI connection details in it.
How it's built
- Server
- Bun · Hono · one process for the REST API, the MCP server and the scheduler
- Web
- React 19 · Vite
- Data
- PostgreSQL · Drizzle ORM
- Auth · MCP
- Better Auth (OAuth provider) · MCP TypeScript SDK · MCP Apps · Zod
- Infra
- Docker · AWS Lightsail, Sydney · Cloudflare Tunnel
- Quality
- bun test · Biome · TypeScript · GitHub Actions, with a throwaway PostgreSQL
Earlier projects
UR Check grew out of these two projects.
UR MCP App
An MCP server and app for UR rental vacancies: Claude and ChatGPT search them accurately, show the rooms as cards in the chat, and catch new ones three times a day.
TypeScript · MCP · RailwayNot affiliated with UR (Urban Renaissance Agency). Always confirm availability on the official UR site. The screenshots and the demo use made-up rooms.