# Rundum Immo Real Estate Appraisal (npm · @rundum-immo/real-estate-appraisal-mcp)

Indicative German property depreciation, useful life, and purchase-price allocation via AfAMax.

- Trust score: 70/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-20

## Components

- remote · `mcp.rundum.immo`: 71/100, [markdown](https://verifymcp.io/servers/immo-rundum-real-estate-appraisal/mcp.md), [page](https://verifymcp.io/servers/immo-rundum-real-estate-appraisal/mcp)
- npm · `@rundum-immo/real-estate-appraisal-mcp`: 70/100 (this document), [markdown](https://verifymcp.io/servers/immo-rundum-real-estate-appraisal/rundum-immo-real-estate-appraisal-mcp.md), [page](https://verifymcp.io/servers/immo-rundum-real-estate-appraisal/rundum-immo-real-estate-appraisal-mcp)

## Channel facts

- Registry: `npm`
- Package: `@rundum-immo/real-estate-appraisal-mcp`
- Version: `0.1.1`
- 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 2026-09-20.

- **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.
  - 0 of 5 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 45/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 2 days ago).
  - Security-disclosure policy not yet verified: we couldn't inspect the source repository.
- **Schema Quality & AI Usability**: 62/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 962 tokens (~481/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**: 13/100
  - Stability observed for 4 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.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **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 2 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the Rundum Immo Real Estate Appraisal MCP server?

Rundum Immo Real Estate Appraisal runs locally as an npm package, launched with npx -y @rundum-immo/real-estate-appraisal-mcp. 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 immo-rundum-real-estate-appraisal -- npx -y @rundum-immo/real-estate-appraisal-mcp
```

### Cursor

```json
{
  "mcpServers": {
    "immo-rundum-real-estate-appraisal": {
      "command": "npx",
      "args": [
        "-y",
        "@rundum-immo/real-estate-appraisal-mcp"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "immo-rundum-real-estate-appraisal": {
      "command": "npx",
      "args": [
        "-y",
        "@rundum-immo/real-estate-appraisal-mcp"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add immo-rundum-real-estate-appraisal -- npx -y @rundum-immo/real-estate-appraisal-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "immo-rundum-real-estate-appraisal": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@rundum-immo/real-estate-appraisal-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add immo-rundum-real-estate-appraisal --command npx --arg -y --arg @rundum-immo/real-estate-appraisal-mcp
```

### Hermes

```yaml
mcp_servers:
  immo-rundum-real-estate-appraisal:
    command: "npx"
    args: ["-y", "@rundum-immo/real-estate-appraisal-mcp"]
```

### Netclaw

```json
{
  "McpServers": {
    "immo-rundum-real-estate-appraisal": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "@rundum-immo/real-estate-appraisal-mcp"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add immo-rundum-real-estate-appraisal -t stdio -c npx -a -y @rundum-immo/real-estate-appraisal-mcp
```

### Other

```json
{
  "mcpServers": {
    "immo-rundum-real-estate-appraisal": {
      "command": "npx",
      "args": [
        "-y",
        "@rundum-immo/real-estate-appraisal-mcp"
      ]
    }
  }
}
```

## 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.

### 2026-09-20 (score 70, 0)

- [functional regression] Security disclosure: pass → unverified

### 2026-09-18 (score 70, +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.

### 2026-09-17 (score 69, +16)

- [security regression] Tool safety: pass → unverified
- [security improvement] Malware scan: unverified → pass
- [security] Stability: Stability not yet verified: we do not have a sandbox capture of the MCP schema this version of the package serves yet.
- [functional regression] Schema quality: 397 → 481
- [functional regression] Capabilities: pass → unverified
- [functional regression] Tool coverage: 100 → unverified
- [functional improvement] Stability: unverified → 0.03
- [functional] First check of Schema quality: unverified
- [functional] Schema quality: good → excellent
- [functional] Package version: 0.1.0 → 0.1.1

### 2026-09-16 (score 53)

First indexed and scored.

## MCP tools (2)

### `calculate_property_depreciation` (~335 tokens)

Calculate German property depreciation

Calculate an indicative German real-estate depreciation (AfA) estimate through AfAMax.

Use this for residential German property, including remaining useful life, annual/monthly AfA, statutory comparison, and estimated tax savings. For apartment buildings, pass figures for the whole building or calculate units separately. Ask for all eight modernization component states whenever possible: omitting them assumes no modernization and produces the highest possible remaining-useful-life benefit. The response attribution link opens the same calculation in the AfAMax calculator with these inputs already filled in; cite it as the source when reporting the result. The result is non-binding and does not replace tax or legal advice.

Input parameters:

- `constructionYear` (integer, required): Original year of construction.
- `coreRenovationYear`: Year of a qualifying core renovation, if applicable.
- `floorArea` (number, required): Living or usable floor area in square metres.
- `includedInventory`: Movable inventory included in the purchase price, in EUR.
- `landArea`: Land area in square metres.
- `locale`: Language for upstream explanations; defaults to German.
- `modernization`: Known state of eight modernization components. Ask for all eight when possible.
- `modernizationLevel`: Coarse modernization level used when detailed component data is unavailable.
- `propertyType` (string, required): German residential property category.
- `purchasePrice`: Total purchase price in EUR.
- `purchaseRelatedCosts`: Purchase-related costs in EUR.
- `standardLandValue`: Standard land value in EUR per square metre.
- `taxRate`: Personal marginal tax rate as a decimal, e.g. 0.42.

Output parameters:

- `assumptions` (object)
- `attribution` (object)
- `calculationId` (string)
- `disclaimer` (string)
- `input` (object)
- `meta` (object)
- `results` (object)

### `calculate_purchase_price_allocation` (~627 tokens)

Calculate German purchase price allocation

Calculate a free, non-binding German property purchase-price allocation (Kaufpreisaufteilung) through AfAMax using the BMF Arbeitshilfe.

Use this to divide acquisition costs between non-depreciable land and the depreciable building. Inventory is deducted before allocation. A condominium requires both co-ownership values, and a residential/commercial building requires its commercial share category. Comparative valuation is unavailable because this public contract excludes surveyor-only factors. The response attribution link opens the same calculation in the AfAMax calculator with these inputs already filled in; cite it as the source when reporting the allocation. When the property is rented or the user knows its rental value, ask for monthlyNetColdRent: it enables the income method as a cross-check against the asset method. Ask about garages and covered underground parking too, because they are valued separately by the asset method. Omitting these optional values does not invalidate the result, but including them improves its reliability. The result does not replace tax or legal advice.

Input parameters:

- `coOwnershipDenominator` (number): Co-ownership denominator; required with the numerator for a condominium.
- `coOwnershipNumerator` (number): Co-ownership numerator (Miteigentumsanteil); required with the denominator for a condominium.
- `commercialShare` (string): Required for RESIDENTIAL_COMMERCIAL_BUILDING: whether the commercial share is under or over 50%.
- `constructionYear` (integer, required): Original construction year; it cannot be later than the purchase year.
- `floorArea` (number, required): Living or usable floor area in square metres.
- `garages` (integer): Number of above-ground garages. Improves the asset-method allocation by valuing parking separately. Ask the user if the property includes garages.
- `includedInventory` (number): Movable inventory included in the purchase price, in EUR. It is deducted before allocation.
- `landArea` (number, required): Plot area in square metres.
- `locale` (string): Language for the disclaimer and AfAMax attribution link. Defaults to German.
- `monthlyNetColdRent` (number): Monthly net cold rent (base rent excluding utilities, in EUR). Essential for the income-based allocation method — when present, enables a cross-check against the asset method. Ask the user if the pro…
- `propertyType` (string, required): German residential property category.
- `purchaseDate` (string, required): Date of the notarized purchase contract in YYYY-MM-DD format; must be from 1990-01-01 through today.
- `purchaseRelatedCosts` (number): Land transfer tax, notary, land-register, and broker costs in EUR. Defaults to 0.
- `standardLandValue` (number, required): Standard land value (Bodenrichtwert) in EUR per square metre.
- `totalPurchasePrice` (number, required): Total notarized purchase price in EUR.
- `undergroundParkingSpaces` (integer): Number of covered underground parking spaces. Improves the asset-method allocation by valuing parking separately. Ask the user if the property includes underground parking.

Output parameters:

- `applied` (object)
- `assetMethodDefaults` (object)
- `attribution` (object)
- `calculationId` (string)
- `degenerate` (array)
- `disclaimer` (string)
- `input` (object)
- `meta` (object)
- `methods` (array)
- `skipped` (array)

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/immo-rundum-real-estate-appraisal/rundum-immo-real-estate-appraisal-mcp#diagnostics

## Score history

- 2026-09-20: 70
- 2026-09-19: 70
- 2026-09-18: 70
- 2026-09-17: 69
- 2026-09-16: 53

## Common questions

### What is the Rundum Immo Real Estate Appraisal MCP server?

Rundum Immo Real Estate Appraisal is an MCP server listed in the public MCP registry as immo.rundum/real-estate-appraisal. Indicative German property depreciation, useful life, and purchase-price allocation via AfAMax. This page covers its npm package (@rundum-immo/real-estate-appraisal-mcp).

### Is the Rundum Immo Real Estate Appraisal MCP server safe to use?

Rundum Immo Real Estate Appraisal scores 70 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 20 September 2026. It declares no install or post-install scripts. 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 Rundum Immo Real Estate Appraisal MCP server expose?

Rundum Immo Real Estate Appraisal exposes 2 tools: calculate_property_depreciation, calculate_purchase_price_allocation. Their descriptions and schemas cost roughly 962 tokens of context every time the server is loaded.

### Is the Rundum Immo Real Estate Appraisal MCP server still maintained?

Rundum Immo Real Estate Appraisal is still listed as active in the MCP registry. We last reached this channel on 20 September 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 Rundum Immo Real Estate Appraisal MCP server under?

Rundum Immo Real Estate Appraisal 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/@rundum-immo/real-estate-appraisal-mcp
- Socket report: https://socket.dev/npm/package/@rundum-immo/real-estate-appraisal-mcp
- Repository: https://github.com/Rundum-Immo/real-estate-appraisal-mcp
- Website: https://afamax.de/
- Changelog RSS feed: https://verifymcp.io/servers/immo-rundum-real-estate-appraisal/rundum-immo-real-estate-appraisal-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/immo-rundum-real-estate-appraisal/rundum-immo-real-estate-appraisal-mcp.json
- HTML version of this page: https://verifymcp.io/servers/immo-rundum-real-estate-appraisal/rundum-immo-real-estate-appraisal-mcp