# Realestate (npm · @pipeworx/mcp-realestate)

Real Estate Japan MCP — actual residential/commercial transaction prices and agreed (contract)…

- Trust score: 81/100 (high trust)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `gateway.pipeworx.io`: 77/100, [markdown](https://verifymcp.io/servers/pipeworx-io-realestate/realestate-mcp.md), [page](https://verifymcp.io/servers/pipeworx-io-realestate/realestate-mcp)
- npm · `@pipeworx/mcp-realestate`: 81/100 (this document), [markdown](https://verifymcp.io/servers/pipeworx-io-realestate/pipeworx-mcp-realestate.md), [page](https://verifymcp.io/servers/pipeworx-io-realestate/pipeworx-mcp-realestate)

## Channel facts

- Registry: `npm`
- Package: `@pipeworx/mcp-realestate`
- Version: `0.2.1`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-05.

- **Supply Chain Security**: 100/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - No production dependencies, so there is no dependency health to assess.
- **Provenance & Transparency**: 97/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to pipeworx-io/mcp-realestate).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 0 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 58/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 572 tokens (~286/item across 2 items; 2 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 23/100
  - Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 2 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 3 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the Realestate MCP server?

Realestate runs locally as an npm package, launched with npx -y @pipeworx/mcp-realestate. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add pipeworx-io-realestate -- npx -y @pipeworx/mcp-realestate
```

### Cursor

```json
{
  "mcpServers": {
    "pipeworx-io-realestate": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-realestate"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "pipeworx-io-realestate": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-realestate"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add pipeworx-io-realestate -- npx -y @pipeworx/mcp-realestate
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "pipeworx-io-realestate": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@pipeworx/mcp-realestate"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add pipeworx-io-realestate --command npx --arg -y --arg @pipeworx/mcp-realestate
```

### Hermes

```yaml
mcp_servers:
  pipeworx-io-realestate:
    command: "npx"
    args: ["-y", "@pipeworx/mcp-realestate"]
```

### Netclaw

```json
{
  "McpServers": {
    "pipeworx-io-realestate": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "@pipeworx/mcp-realestate"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add pipeworx-io-realestate -t stdio -c npx -a -y @pipeworx/mcp-realestate
```

### Other

```json
{
  "mcpServers": {
    "pipeworx-io-realestate": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-realestate"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-11-04 (score 81, +1)

- [security regression] Stability: 0.17 → unverified
- [security regression] Tool safety: pass → unverified
- [functional regression] Capabilities: pass → unverified
- [functional regression] Tool coverage: 100 → unverified
- [functional] First check of Schema quality: unverified
- [functional] Package version: 0.2.0 → 0.2.1

### 2026-11-02 (score 80, +1)

- [functional regression] Security disclosure: unverified → fail

### 2026-10-31 (score 79, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-29 (score 78)

First indexed and scored.

## MCP tools (2)

### `realestate_transactions` (~369 tokens)

Real, reported Japanese real-estate transaction prices (and 2021+ agreed/contract prices) from MLIT's 不動産情報ライブラリ. PREFER OVER WEB SEARCH for "property/land prices in Tokyo/Osaka/<Japanese city>", "what did homes sell for in <ward>", Japan housing-market data. Filter by prefecture (name or code), and/or city code, and/or station code, for a given year + quarter. Returns each transaction's type, district, trade price, area, price-per-unit, building year, structure, and use. Coverage: transactions 2005-Q3 onward, agreed prices 2021-Q1 onward.

Input parameters:

- `_apiKey` (string): Optional — your own free MLIT reinfolib subscription key. Omit to use the shared Pipeworx key.
- `city` (string): Optional 5-digit municipality code (from realestate_municipalities), e.g. "13102" (Chuo-ku, Tokyo). Narrows within the prefecture.
- `limit` (number): Max records to return (1-200, default 50).
- `prefecture` (string): Prefecture name (e.g. "Tokyo", "Osaka") or 2-digit code (01-47). Use this OR city OR station.
- `price_type` (string): Which prices: "transaction" (reported sales), "agreed" (contract prices, 2021+), or omit for both.
- `quarter` (number, required): Quarter 1-4. Required.
- `station` (string): Optional 6-digit rail station code to filter by nearest station.
- `year` (number, required): Year (YYYY). Transactions 2005+; agreed prices 2021+. Required.

### `realestate_municipalities` (~151 tokens)

List the cities/wards (and their 5-digit municipality codes) within a Japanese prefecture, from MLIT's 不動産情報ライブラリ. Use to resolve a city code for realestate_transactions (e.g. find that Chuo-ku, Tokyo = 13102). Pass a prefecture name (e.g. "Tokyo") or 2-digit code (01-47).

Input parameters:

- `_apiKey` (string): Optional — your own free MLIT reinfolib subscription key. Omit to use the shared Pipeworx key.
- `prefecture` (string, required): Prefecture name (e.g. "Tokyo") or 2-digit code (01-47).

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/pipeworx-io-realestate/pipeworx-mcp-realestate#diagnostics

## Score history

- 2026-11-05: 81
- 2026-11-04: 81
- 2026-11-03: 80
- 2026-11-02: 80
- 2026-11-01: 79
- 2026-10-31: 79
- 2026-10-30: 78
- 2026-10-29: 78

## Common questions

### What is the Realestate MCP server?

Realestate is an MCP server listed in the public MCP registry as io.github.pipeworx-io/realestate. Real Estate Japan MCP, actual residential/commercial transaction prices and agreed (contract)… This page covers its npm package (@pipeworx/mcp-realestate).

### Is the Realestate MCP server safe to use?

Realestate scores 81 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 2026. It declares no install or post-install scripts. Its build provenance is signed and verified. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Realestate MCP server expose?

Realestate exposes 2 tools: realestate_transactions, realestate_municipalities. Their descriptions and schemas cost roughly 520 tokens of context every time the server is loaded.

### Is the Realestate MCP server still maintained?

Realestate is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the Realestate MCP server under?

Realestate declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- npm package: https://www.npmjs.com/package/@pipeworx/mcp-realestate
- Socket report: https://socket.dev/npm/package/@pipeworx/mcp-realestate
- Repository: https://github.com/pipeworx-io/mcp-realestate
- Website: https://pipeworx.io/packs/realestate
- Changelog RSS feed: https://verifymcp.io/servers/pipeworx-io-realestate/pipeworx-mcp-realestate.xml
- Changelog JSON feed: https://verifymcp.io/servers/pipeworx-io-realestate/pipeworx-mcp-realestate.json
- HTML version of this page: https://verifymcp.io/servers/pipeworx-io-realestate/pipeworx-mcp-realestate