Server data from the Official MCP Registry
Property intelligence: 180M+ US parcels — lookup, search, owners, hazards, permits, deeds.
About
Property intelligence: 180M+ US parcels — lookup, search, owners, hazards, permits, deeds.
Remote endpoints: streamable-http: https://mcp.propraven.com/mcp
Security Report
PropRaven MCP server is well-structured with proper authentication via API keys and reasonable permission scoping appropriate for a property data service. Code quality is good with proper error handling and input validation. Minor issues include broad error catching without logging and potential unvalidated date parsing, but these do not materially impact security. Supply chain analysis found 2 known vulnerabilities in dependencies (0 critical, 2 high severity). Package verification found 1 issue.
7 files analyzed · 7 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
What You'll Need
Set these up before or after installing:
Environment variable: PROPRAVEN_API_KEY
How to Install & Connect
Available as Local & Remote
This plugin can run on your machine or connect to a hosted endpoint. during install.
Documentation
View on GitHubFrom the project's GitHub README.
@propraven/mcp
Model Context Protocol server for PropRaven — gives Claude, ChatGPT, Cursor, and any MCP-compatible agent canonical access to 180M+ US parcels with ownership, valuation, permits, deeds, hazard, and market data.
Status: alpha. Hosted endpoint at mcp.propraven.com — August 2026. Until then, run it locally (works today).
Local install in Claude Desktop
Requirements: Node ≥18, a PropRaven API key (pz_…) from https://propraven.com/dashboard.
One-time setup
git clone https://github.com/propraven/propraven-mcp.git
cd propraven-mcp
npm install
npm run build
Wire into Claude Desktop
Edit ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows):
{
"mcpServers": {
"propraven": {
"command": "node",
"args": ["/absolute/path/to/propraven-mcp/dist/index.js"],
"env": {
"PROPRAVEN_API_KEY": "pz_your_real_key_here"
}
}
}
}
Restart Claude Desktop. The 8 PropRaven tools (parcel.lookup, parcel.search, parcel.compare, owner.pierce, hazard.score, valuation.estimate, permits.history, sales.history) appear in the tool list.
Quick test
Look up parcel 37183:0012345 and tell me the owner.
Claude should pick parcel.lookup and return canonical record + owner.
Cursor + ChatGPT
Cursor: install via the MCP marketplace (search "PropRaven") once we publish, or wire manually:
// ~/.cursor/mcp.json
{
"mcpServers": {
"propraven": { "command": "node", "args": ["/abs/path/dist/index.js"], "env": { "PROPRAVEN_API_KEY": "pz_..." } }
}
}
ChatGPT: Custom GPT → Actions → connect via OAuth (waiting on mcp.propraven.com hosted endpoint — Aug 2026).
Tools
| Tool | Purpose | Backed by |
|---|---|---|
parcel.lookup | Resolve one parcel by composite ID, address, or APN | GET /api/v1/parcels/{id} or GET /api/v1/search/full |
parcel.search | Filter parcels by geography + attributes | GET /api/v1/search/full |
parcel.compare | Fetch reports for 2–25 parcels for agent-side ranking | GET /api/v1/parcels/{id}/report × N |
owner.pierce | Resolve a name/entity to its full portfolio | GET /api/v1/owners/{name}/portfolio |
hazard.score | Flood / fire / seismic / windstorm / air-quality / crime composite | GET /api/v1/parcels/{id}/risks |
valuation.estimate | AVM + assessed / market values for a parcel | GET /api/v1/parcels/{id} |
permits.history | Permit timeline for a parcel | GET /api/v1/parcels/{id}/permits |
sales.history | Deed timeline ± UCC liens | GET /api/v1/parcels/{id}/deeds (+ /report if liens) |
Tool descriptions are optimized for agent reasoning — they explicitly call out when not to use each tool, which is the biggest determinant of agent selection accuracy.
Environment
The server reads:
| Variable | Default | Purpose |
|---|---|---|
PROPRAVEN_API_KEY | (required) | Bearer token, format pz_... |
PROPRAVEN_BASE_URL | https://api.propraven.com | API host. Use https://propzilla.vercel.app during the DNS cutover window. |
PROPRAVEN_TIMEOUT_MS | 30000 | Per-request timeout in ms. |
Develop / inspect
# Live-reloading dev (TypeScript, no build step):
PROPRAVEN_API_KEY=pz_test... npm run dev
# Or open the MCP Inspector UI:
PROPRAVEN_API_KEY=pz_test... npm run inspect
The inspector at https://modelcontextprotocol.io/legacy/tools/inspector lets you call each tool manually and see request/response payloads.
Why this exists
Every Claude / ChatGPT / Cursor workflow that touches property data needs an authoritative parcel-lookup tool. There is no canonical property-data MCP today. PropRaven aims to be it before the first-mover window closes (~12–18 months).
License
Apache-2.0
Reviews
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