Immo

An MCP (Model Context Protocol) server for French real-estate market analysis, built exclusively on open data sources. No third-party site automation.

Data sources

Source	What it provides
DVF Etalab	All notarised property transactions in France (2018-present)
OpenDataSoft DVF API	Same DVF data, queryable without a local DB
ADEME DPE-v2	Energy-performance certificates (DPE)
Géorisques	Flood, seismic, radon, ICPE risk data
CRE	Regulated electricity tariffs
INSEE	Postal code → INSEE commune lookup
Nominatim / Overpass OSM	Geocoding and points of interest

MCP tools

Tool	Description
dvf	Search DVF transactions by city / postal code / department
dvf_stats	Aggregate price statistics from DVF (median, p25/p75, …)
dvf_db_info	Report on the local DuckDB DVF database
pappers_immo	DVF statistics via the OpenDataSoft public API
detect_underpriced	Compare a market segment against DVF + ODS reference prices
dpe	Search DPE certificates by city or postal code
georisques	Risk analysis for a location (flood, seismic, radon, ICPE)
list_georisques_kinds	List available Géorisques risk categories
electricity_tariff	Fetch current regulated electricity tariffs (CRE)
insee_lookup	Resolve a postal code to its INSEE commune codes
geocode	Forward geocode an address via Nominatim
pois	Search points of interest around a location (OSM Overpass)
list_poi_categories	List available POI category presets
listings_stats	Compute price statistics on a list of listings
listings_gap	Annotate listings with gap-from-median percentage

Quick start

1. Install

python -m venv .venv
source .venv/bin/activate
pip install -r requirements.txt

2. (Optional) Build a local DVF database

For faster, offline DVF queries you can build a local DuckDB:

# Requires Docker
cd docker/dvf
DVF_HOST_DATA_DIR=~/.immo-mcp/dvf docker compose up

The MCP server will look for the database at ~/.immo-mcp/dvf/dvf.duckdb. Without it, the dvf tool falls back to the OpenDataSoft API automatically.

3. Start the server

python -m immo_mcp.server

4. Connect from Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json (macOS):

{
  "mcpServers": {
    "immo-mcp": {
      "command": "/path/to/.venv/bin/python",
      "args": ["-m", "immo_mcp.server"]
    }
  }
}

Environment variables

Variable	Default	Description
DVF_DB_PATH	~/.immo-mcp/dvf/dvf.duckdb	Path to local DuckDB DVF file
IMMO_CACHE_DB	~/.immo-mcp/listings.db	SQLite listing cache

Development

pip install -r requirements.txt
pytest

License

MIT — see LICENSE.