# io.github.OlivierLAVAUD/mcp-immo (npm · mcp-immo-olv)

French real-estate intelligence from official open data: DVF, valuations, rents, tax, DPE, risks.

- Trust score: 71/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-26

## Components

- npm · `mcp-immo-olv`: 71/100 (this document), [markdown](https://verifymcp.io/servers/olivierlavaud-mcp-immo/mcp-immo-olv.md), [page](https://verifymcp.io/servers/olivierlavaud-mcp-immo/mcp-immo-olv)

## Channel facts

- Registry: `npm`
- Package: `mcp-immo-olv`
- Version: `1.0.3`
- 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 2026-09-26.

- **Supply Chain Security**: 98/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - 31 of 96 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 48/100
  - 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 0 days ago).
  - Publishes a security disclosure policy (SECURITY.md).
- **Schema Quality & AI Usability**: 79/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 1776 tokens (~111/item across 16 items; 16 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **Tool Coverage**: 91/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 74% 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 16 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 16 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.

**Unverified: 1 category.** A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.

## Install

### How do I install the io.github.OlivierLAVAUD/mcp-immo server?

io.github.OlivierLAVAUD/mcp-immo runs locally as an npm package, launched with npx -y mcp-immo-olv. 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 olivierlavaud-mcp-immo -- npx -y mcp-immo-olv
```

### Cursor

```json
{
  "mcpServers": {
    "olivierlavaud-mcp-immo": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-immo-olv"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "olivierlavaud-mcp-immo": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-immo-olv"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add olivierlavaud-mcp-immo -- npx -y mcp-immo-olv
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "olivierlavaud-mcp-immo": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "mcp-immo-olv"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add olivierlavaud-mcp-immo --command npx --arg -y --arg mcp-immo-olv
```

### Hermes

```yaml
mcp_servers:
  olivierlavaud-mcp-immo:
    command: "npx"
    args: ["-y", "mcp-immo-olv"]
```

### Netclaw

```json
{
  "McpServers": {
    "olivierlavaud-mcp-immo": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "mcp-immo-olv"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add olivierlavaud-mcp-immo -t stdio -c npx -a -y mcp-immo-olv
```

### Other

```json
{
  "mcpServers": {
    "olivierlavaud-mcp-immo": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-immo-olv"
      ]
    }
  }
}
```

## 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.

### 2026-09-25 (score 71)

First indexed and scored.

## MCP tools (16)

### `geocode_address` (~80 tokens)

Geocode a French address

Resolve a French address, street, or city to normalized candidates with coordinates, INSEE city code and BAN id (Base Adresse Nationale). Use this first if an address is ambiguous.

Input parameters:

- `limit` (integer): Max candidates (default 5)
- `query` (string, required): Free-form address, e.g. '10 rue de la Paix Paris'

### `property_sales` (~168 tokens)

Real property sales around an address (DVF)

List actual notarized property sales (price, date, surface, rooms) recorded by the French tax administration (DVF) around an address, or for a whole commune if only a city is given. Data 2021-2025, no API key.

Input parameters:

- `address` (string, required): Address, street or city in France
- `limit` (integer): Max sales returned (default 30)
- `max_surface_m2` (number)
- `min_surface_m2` (number)
- `radius_m` (number): Search radius in meters around the address (default 300; ignored for city-wide queries)
- `type_local` (string): Filter by dwelling type
- `years` (array): DVF years to include (2021-2025). Defaults to all.

### `price_per_m2` (~123 tokens)

Price per m² statistics (DVF)

Compute price-per-m² statistics (median, mean, quartiles, per-year evolution) from actual notarized sales around a French address or across a commune. Data 2021-2025.

Input parameters:

- `address` (string, required): Address, street or city in France
- `radius_m` (number): Search radius in meters around the address (default 500; ignored for city-wide queries)
- `type_local` (string): Filter by dwelling type
- `years` (array): DVF years to include (2021-2025). Defaults to all.

### `estimate_property` (~119 tokens)

Estimate a property's value (comparables)

Transparent comparables-based valuation of a flat or house at a precise French address: weighted median of nearby single-dwelling notarized sales, adjusted to current market level, with every comp and weight returned for audit. Also returns the official rent indicator and gross rental yield.

Input parameters:

- `address` (string, required): Precise address (street + number preferred)
- `rooms` (integer): Main rooms (pièces principales) — refines the rent indicator
- `surface_m2` (number, required): Living surface in m²
- `type_local` (string, required)

### `rent_estimate` (~94 tokens)

Rent indicators (Carte des loyers)

Official modelled asking rents (€/m²/month, charges included) for any French commune: apartments overall, 1-2 rooms, 3+ rooms, and houses. Source: Carte des loyers, Ministère du Logement / ANIL.

Input parameters:

- `location` (string, required): Address, commune name or INSEE code
- `surface_m2` (number): If given, also returns the estimated monthly rent

### `property_tax_estimate` (~104 tokens)

Average property tax by commune (REI)

Returns the annual average charge per taxable REI article for taxe foncière on built properties, including published communal, intercommunal, syndicate, GEMAPI and TEOM components. It is an aggregate proxy, not an individual property's tax bill. Source: DGFiP REI via OFGL.

Input parameters:

- `location` (string, required): Address, commune name or INSEE code
- `year` (integer): REI tax year; defaults to the latest available year

### `property_report` (~131 tokens)

Full property due-diligence report

One call, full dossier for a French address: price-per-m² market stats, recent notarized sales, energy diagnostics (DPE), natural & technological risks, commune profile, official rent indicators and an aggregate taxe foncière proxy — plus a comparables-based valuation, gross yield and yield after average property tax when type_local and surface_m2 are provided. Ideal first call when a user asks about a specific property.

Input parameters:

- `address` (string, required): Address in France
- `rooms` (integer)
- `surface_m2` (number)
- `type_local` (string): Filter by dwelling type

### `dpe_lookup` (~105 tokens)

Energy performance diagnostics (DPE)

Find official energy performance certificates (DPE: energy label A-G, GES label, surface, construction year) filed for a French address. Source: ADEME open data.

Input parameters:

- `address` (string, required): Address in France
- `dataset` (string): DPE register: existing dwellings (dpe03existant), new dwellings (dpe02neuf), or both (default all)
- `limit` (integer): Max diagnostics returned (default 10)

### `natural_risks` (~79 tokens)

Natural & technological risks (Géorisques)

Official risk report for a French address or point: flood, clay shrink-swell, radon, earthquake, industrial sites... Source: Géorisques (Ministère de la Transition écologique).

Input parameters:

- `address` (string): Address in France (alternative to lat/lon)
- `lat` (number)
- `lon` (number)

### `commune_info` (~61 tokens)

Commune information

Population, postcodes, département, région, surface and center coordinates of a French commune, by name or INSEE code.

Input parameters:

- `query` (string, required): Commune name or 5-char INSEE code (e.g. 'Lyon' or '69123')

### `reverse_geocode` (~32 tokens)

Reverse geocode

Find the nearest French address for GPS coordinates.

Input parameters:

- `lat` (number, required)
- `lon` (number, required)

### `backtest_estimator` (~185 tokens)

Walk-forward backtest of the valuation model

Replay the comparable-sales estimator on the commune's own notarized sales: every historical sale is valued using only the sales recorded before it (no look-ahead, own deed excluded), then compared with the price actually paid. Returns MAPE, median and 90th-percentile absolute error, signed bias, P25–P75 range coverage and the same metrics by surface band and by year. Use it to say how reliable estimate_property is in this specific market.

Input parameters:

- `address` (string, required): Precise address (street or house number) in France
- `from_year` (integer): First sale year to evaluate (default: every year available)
- `max_points` (integer): Max sales evaluated, most recent first (default 250)
- `to_year` (integer): Last sale year to evaluate
- `type_local` (string, required): Property type to backtest

### `cadastral_parcel` (~116 tokens)

Cadastral parcel at an address

Official cadastral parcel(s) containing an address: unique cadastral id (idu) quoted on deeds, section, number and the official contenance in m². The contenance is the taxed area of the whole parcel, land included — not the dwelling's habitable surface — and the cadastre never records ownership. Source: IGN / DGFiP via API Carto.

Input parameters:

- `address` (string): Address in France (alternative to lat/lon)
- `lat` (number)
- `lon` (number)

### `urbanism_zoning` (~131 tokens)

Urbanism rules at an address (PLU)

Urbanism zoning and prescriptions applicable to an address, from the Géoportail de l'urbanisme: zoning area label and type (U urban, AU to be urbanised, A agricultural, N natural), the regulation document reference, and the surface / linear / point prescriptions (emplacements réservés, protected areas, alignments…). It states which rules apply, never whether a project is permitted. Source: GPU, DGALN / IGN.

Input parameters:

- `address` (string): Address in France (alternative to lat/lon)
- `lat` (number)
- `lon` (number)

### `iris_lookup` (~94 tokens)

IRIS neighbourhood of an address

Identify the IRIS — INSEE's infra-communal statistical unit, about 2 000 inhabitants — containing an address: 9-character IRIS code, name, type and commune. Join that code to INSEE's IRIS tables for population and Filosofi income. Boundaries from IGN ADMINEXPRESS; this layer carries identity only, no socio-demographic figures.

Input parameters:

- `address` (string, required): Address in France

### `rent_control` (~154 tokens)

Rent-control reference rents

Loyer de référence, loyer de référence majoré (the legal ceiling) and minoré, in €/m²/month, for a rent-controlled area — by number of rooms, construction period and furnished status. Covers only the areas whose authority publishes an open grid (Paris, Métropole de Lyon); the response states explicitly when an address is not covered instead of guessing. Sources: Ville de Paris, Métropole de Lyon.

Input parameters:

- `address` (string, required): Address in France
- `furnished` (boolean): Furnished (true) or unfurnished (false)
- `period` (string): Construction period label, e.g. '1946-1970'
- `rooms` (integer): Number of rooms (pièces)

## Diagnostics

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

## Score history

- 2026-09-26: 71
- 2026-09-25: 71

## Common questions

### What is the io.github.OlivierLAVAUD/mcp-immo server?

io.github.OlivierLAVAUD/mcp-immo is listed in the public MCP registry as io.github.OlivierLAVAUD/mcp-immo. French real-estate intelligence from official open data: DVF, valuations, rents, tax, DPE, risks. This page covers its npm package (mcp-immo-olv).

### Is the io.github.OlivierLAVAUD/mcp-immo server safe to use?

io.github.OlivierLAVAUD/mcp-immo scores 71 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 26 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 io.github.OlivierLAVAUD/mcp-immo server expose?

io.github.OlivierLAVAUD/mcp-immo exposes 16 tools: geocode_address, property_sales, price_per_m2, estimate_property, rent_estimate, and 11 more. Their descriptions and schemas cost roughly 1,776 tokens of context every time the server is loaded.

### Is the io.github.OlivierLAVAUD/mcp-immo server still maintained?

io.github.OlivierLAVAUD/mcp-immo is still listed as active in the MCP registry. We last reached this channel on 26 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 io.github.OlivierLAVAUD/mcp-immo server under?

io.github.OlivierLAVAUD/mcp-immo 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/mcp-immo-olv
- Socket report: https://socket.dev/npm/package/mcp-immo-olv
- Repository: https://github.com/OlivierLAVAUD/mcp-immo-olv
- Changelog RSS feed: https://verifymcp.io/servers/olivierlavaud-mcp-immo/mcp-immo-olv.xml
- Changelog JSON feed: https://verifymcp.io/servers/olivierlavaud-mcp-immo/mcp-immo-olv.json
- HTML version of this page: https://verifymcp.io/servers/olivierlavaud-mcp-immo/mcp-immo-olv