Propraven

Name: Propraven
Author: jdw2111

by jdw2111version 0.2.0i★ –iComputer or cloud

Registry nameio.github.jdw2111/propraven

Install

Overview

Description from the maker (original English)

Property intelligence: 180M+ US parcels — lookup, search, owners, hazards, permits, deeds.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Computer or cloud
Transport: stdio, Streamable HTTP
Category: Search & AI memory
You need to fill in: PROPRAVEN_API_KEY, Authorization

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
You fill in yourself: PROPRAVEN_API_KEY, Authorization

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

Runs in the cloudNothing to install; it connects over the internet
npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Or run it on your computer

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "propraven": {
      "command": "npx",
      "args": [
        "-y",
        "@propraven/mcp"
      ],
      "env": {
        "PROPRAVEN_API_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add --transport http propraven https://propraven.com/mcp --header 'Authorization: your-value'

Or run it on your computer

claude mcp add propraven --env PROPRAVEN_API_KEY=your-value -- npx -y @propraven/mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "propraven": {
      "url": "https://propraven.com/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

Or run it on your computer

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "propraven": {
      "command": "npx",
      "args": [
        "-y",
        "@propraven/mcp"
      ],
      "env": {
        "PROPRAVEN_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "propraven": {
      "type": "http",
      "url": "https://propraven.com/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

Or run it on your computer

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "propraven": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@propraven/mcp"
      ],
      "env": {
        "PROPRAVEN_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

PROPRAVEN_API_KEY secret required env
Your PropRaven API key (pz_...). Get one at https://propraven.com/settings/api-keys.
Authorization secret required HTTP header
Bearer pz_... — your PropRaven API key. Get one at https://propraven.com/settings/api-keys.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 8, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account jdw2111, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Search & AI memoryi

More stars than 0% of the other 5668 servers in this category
Published to the registry more recently than 53% of the other 5668 servers in this category
Basic checks equal to or better than 100% of the other 5668 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Propraven safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: PROPRAVEN_API_KEY, Authorization

Does it run on my computer or in the cloud?

Either way works: install it on your computer or connect to the cloud version.

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.2.0) reached the registry 36 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Context7, Codebase Memory, Exa

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Context7

by upstash

Feeds AI the latest docs for libraries and frameworks before it answers, so code it writes does not use outdated, removed functions.

Computer or cloud★ 64,224MITUpdated yesterday

Install

Codebase Memory

by DeusData

Codebase knowledge graph for AI agents — 162 languages, sub-ms queries, 99% fewer tokens.

Runs on your computer★ 48,148MITUpdated 21 days ago

Install

Exa

by exa-labs

Connect AI agents to Exa for web search, content fetching, and multi-step research.

Runs in the cloud★ 5,213MITUpdated 2 months ago

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

@propraven/mcp

Model Context Protocol server for PropRaven — gives Claude, ChatGPT, Cursor, and any MCP-compatible agent canonical access to 191.3M US parcels (110.0M mapped) with ownership, valuation, permits, deeds, hazard, and market data.

Hosted endpoint: https://propraven.com/mcp (Streamable HTTP, no install — docs: https://propraven.com/docs/mcp · agents + x402: https://propraven.com/docs/agents). Or run the stdio server locally (below).

Hosted (no install)

Point any HTTP-transport MCP client at `https://propraven.com/mcp` with your API key as a bearer header. Claude Desktop / Cursor (claude_desktop_config.json, ~/.cursor/mcp.json):

"mcpServers": { "propraven": { "url": "https://propraven.com/mcp", "headers": { "Authorization": "Bearer pz_your_real_key_here" } } } }

Claude Code: claude mcp add --transport http propraven https://propraven.com/mcp --header "Authorization: Bearer pz_your_real_key_here". The claude.ai web connector uses OAuth instead — add a custom connector with the same URL and sign in.

Local stdio server (`npx @propraven/mcp`)

Requirements: Node ≥18, a PropRaven API key (pz_…) from https://propraven.com/settings/api-keys (free, no card).

Claude Desktop — edit ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows):

"mcpServers": { "propraven": { "command": "npx", "args": ["-y", "@propraven/mcp"], "env": { "PROPRAVEN_API_KEY": "pz_your_real_key_here" } } } }

Cursor (~/.cursor/mcp.json) takes the same block. Claude Code: claude mcp add propraven --env PROPRAVEN_API_KEY=pz_your_real_key_here -- npx -y @propraven/mcp.

Restart the client. The 8 PropRaven tools appear in the tool list.

Quick test

Look up parcel 37:119:12104406 and tell me the owner.

The agent should pick parcel_lookup and return the canonical parcel card with the owner.

ChatGPT: Custom GPT → Actions → OpenAPI URL https://api.propraven.com/openapi.json with API-key (Bearer) auth; native MCP-in-ChatGPT can use the hosted endpoint https://propraven.com/mcp (OAuth 2.1 + PKCE).

Tools

Names match the hosted server (^[a-zA-Z0-9_-]{1,64}$, as MCP clients and the Anthropic API require).

Tool	Purpose	Backed by
`parcel_lookup`	Resolve one parcel by ID, address, or APN	`GET /api/v1/parcels/{id}` (ID) or `GET /api/v1/search/full` (address / APN)
`parcel_search`	Text search by owner, address fragment, APN or city (+ state/city filters, keyset `cursor`)	`GET /api/v1/search/full`
`parcel_compare`	Free card (+ hazards) for 2–25 parcels, for agent-side ranking	`GET /api/v1/parcels/{id}` (+ `/risks`) × N
`owner_pierce`	Parcels titled under an owner name (optional `state` filter, best-effort `ticker`)	`GET /api/v1/owners/{name}/portfolio` (+ `/owners/search` for `ticker`)
`hazard_score`	Flood / wildfire / seismic / windstorm / air-quality / crime blocks	`GET /api/v1/parcels/{id}/risks`
`valuation_estimate`	Market value, AVM, assessed values, last sale, $/sqft	`GET /api/v1/parcels/{id}`
`permits_history`	Permit timeline (≤100 newest, with true-count basis)	`GET /api/v1/parcels/{id}/permits?shape=envelope`
`sales_history`	Deed / transfer timeline	`GET /api/v1/parcels/{id}/deeds?shape=envelope`

Parcel IDs. The canonical form is state_fips:county_fips:parcel_id, e.g. 37:119:12104406. The legacy 5-digit form (37119:12104406) and PropRaven parcel UUIDs are also accepted. parcel_search and parcel_lookup's address search add a lookup_id to every result (search rows carry the PropRaven UUID in parcel_id), which parcel_lookup / parcel_compare accept.

No tool spends money. The client only issues GETs to the seven free / metered read endpoints above, refuses every other path before a request is sent (the paid parcel report, comp pack, risk score, owner report, leads, storefront, …), and never sends a payment header. If the API ever answers with an x402 402 Payment Required, the tool returns 402 payment required — this tool never pays. Calls still count against your plan's monthly quota. To buy a dossier, use the hosted server's explicit buy_* tools or propraven.com.

Errors are RFC 7807 problem details, surfaced as : (e.g. 404 not_found: …). A 429 or 503 is retried once when Retry-After is ≤ 10 s.

Tool descriptions call out when not to use each tool, which is the biggest determinant of agent selection accuracy.

Environment

Variable	Default	Purpose
`PROPRAVEN_API_KEY`	(required)	Bearer token, format `pz_...`
`PROPRAVEN_BASE_URL`	`https://propraven.com`	API host (every path starts with `/api/v1`).
`PROPRAVEN_TIMEOUT_MS`	`30000`	Per-request timeout in ms.

Requests carry User-Agent: @propraven/mcp/ .

Develop / inspect

npm ci

npm run build npm test # node:test suite — no network, no API key needed

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

Propraven

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Or run it on your computer

Or run it on your computer

Or run it on your computer

Or run it on your computer

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Search & AI memoryi

Common questions

Alternatives

Context7

Codebase Memory

Exa

README from the maker

@propraven/mcp

Hosted (no install)

Local stdio server (npx @propraven/mcp)

Quick test

Tools

Environment

Develop / inspect

Live-reloading dev (TypeScript, no build step):

Or open the MCP Inspector UI:

Why this exists

License

Local stdio server (`npx @propraven/mcp`)