io.github.OlivierLAVAUD/mcp-immo
NPM · MCP-IMMO-OLV · SCANNED SEP 26
French real-estate intelligence from official open data: DVF, valuations, rents, tax, DPE, risks.
Available components
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. How we score → Why this is hard to score →
Supply Chain Security98
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- 31 of 96 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency48
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 0 days ago).Pass
- Publishes a security disclosure policy (SECURITY.md).Pass
Schema Quality & AI Usability79
- AI-judged instruction clarity (excellent).Pass
- 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. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management0
- Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified
Tool Coverage91
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 74% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 16 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 16 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
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.
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.
npm · mcp-immo-olv
claude mcp add olivierlavaud-mcp-immo -- npx -y mcp-immo-olv
{
"mcpServers": {
"olivierlavaud-mcp-immo": {
"command": "npx",
"args": [
"-y",
"mcp-immo-olv"
]
}
}
} {
"servers": {
"olivierlavaud-mcp-immo": {
"command": "npx",
"args": [
"-y",
"mcp-immo-olv"
]
}
}
} codex mcp add olivierlavaud-mcp-immo -- npx -y mcp-immo-olv
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"olivierlavaud-mcp-immo": {
"type": "local",
"command": [
"npx",
"-y",
"mcp-immo-olv"
],
"enabled": true
}
}
} openclaw mcp add olivierlavaud-mcp-immo --command npx --arg -y --arg mcp-immo-olv
mcp_servers:
olivierlavaud-mcp-immo:
command: "npx"
args: ["-y", "mcp-immo-olv"] {
"McpServers": {
"olivierlavaud-mcp-immo": {
"Transport": "stdio",
"Command": "npx",
"Arguments": [
"-y",
"mcp-immo-olv"
]
}
}
} assistant mcp add olivierlavaud-mcp-immo -t stdio -c npx -a -y mcp-immo-olv
{
"mcpServers": {
"olivierlavaud-mcp-immo": {
"command": "npx",
"args": [
"-y",
"mcp-immo-olv"
]
}
}
} Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 25 Sept 26 71
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 26 Sept 2026 · Analysed npm/mcp-immo-olv@1.0.3
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | npm |
Background: How many MCP packages publish verified provenance →
Dependencies 96 packages
| Packages resolved | 96 |
|---|---|
| Stale | 31 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
backtest_estimator Walk-forward backtest of the valuation model ~185
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.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | 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 | yes | Property type to backtest |
No output schema declared.
No examples provided.
cadastral_parcel Cadastral parcel at an address ~116
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.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | – | Address in France (alternative to lat/lon) |
| lat | number | – | – |
| lon | number | – | – |
No output schema declared.
No examples provided.
commune_info Commune information ~61
Population, postcodes, département, région, surface and center coordinates of a French commune, by name or INSEE code.
| Name | Type | Req | Description |
|---|---|---|---|
| query | string | yes | Commune name or 5-char INSEE code (e.g. 'Lyon' or '69123') |
No output schema declared.
No examples provided.
dpe_lookup Energy performance diagnostics (DPE) ~105
Find official energy performance certificates (DPE: energy label A-G, GES label, surface, construction year) filed for a French address. Source: ADEME open data.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | Address in France |
| dataset | string | – | DPE register: existing dwellings (dpe03existant), new dwellings (dpe02neuf), or both (default all) |
| limit | integer | – | Max diagnostics returned (default 10) |
No output schema declared.
No examples provided.
estimate_property Estimate a property's value (comparables) ~119
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.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | Precise address (street + number preferred) |
| rooms | integer | – | Main rooms (pièces principales) — refines the rent indicator |
| surface_m2 | number | yes | Living surface in m² |
| type_local | string | yes | – |
No output schema declared.
No examples provided.
geocode_address Geocode a French address ~80
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.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Max candidates (default 5) |
| query | string | yes | Free-form address, e.g. '10 rue de la Paix Paris' |
No output schema declared.
No examples provided.
iris_lookup IRIS neighbourhood of an address ~94
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.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | Address in France |
No output schema declared.
No examples provided.
natural_risks Natural & technological risks (Géorisques) ~79
Official risk report for a French address or point: flood, clay shrink-swell, radon, earthquake, industrial sites... Source: Géorisques (Ministère de la Transition écologique).
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | – | Address in France (alternative to lat/lon) |
| lat | number | – | – |
| lon | number | – | – |
No output schema declared.
No examples provided.
price_per_m2 Price per m² statistics (DVF) ~123
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.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | 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. |
No output schema declared.
No examples provided.
property_report Full property due-diligence report ~131
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.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | Address in France |
| rooms | integer | – | – |
| surface_m2 | number | – | – |
| type_local | string | – | Filter by dwelling type |
No output schema declared.
No examples provided.
property_sales Real property sales around an address (DVF) ~168
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.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | 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. |
No output schema declared.
No examples provided.
property_tax_estimate Average property tax by commune (REI) ~104
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.
| Name | Type | Req | Description |
|---|---|---|---|
| location | string | yes | Address, commune name or INSEE code |
| year | integer | – | REI tax year; defaults to the latest available year |
No output schema declared.
No examples provided.
rent_control Rent-control reference rents ~154
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.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | 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) |
No output schema declared.
No examples provided.
rent_estimate Rent indicators (Carte des loyers) ~94
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.
| Name | Type | Req | Description |
|---|---|---|---|
| location | string | yes | Address, commune name or INSEE code |
| surface_m2 | number | – | If given, also returns the estimated monthly rent |
No output schema declared.
No examples provided.
reverse_geocode Reverse geocode ~32
Find the nearest French address for GPS coordinates.
| Name | Type | Req | Description |
|---|---|---|---|
| lat | number | yes | – |
| lon | number | yes | – |
No output schema declared.
No examples provided.
urbanism_zoning Urbanism rules at an address (PLU) ~131
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.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | – | Address in France (alternative to lat/lon) |
| lat | number | – | – |
| lon | number | – | – |
No output schema declared.
No examples provided.
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.