ListRiver

Name: ListRiver
Author: ListRiver-LLC

by ListRiver-LLCversion 0.1.0i★ –iRuns on your computer

Registry nameio.github.ListRiver-LLC/listriver

Install

Overview

Description from the maker (original English)

Search new and active U.S. businesses from state registries: new LLCs by state, city, ZIP, NAICS.

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: Runs on your computer
Transport: stdio
Category: Search & AI memory
You need to fill in: LISTRIVER_API_KEY

Install

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

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: LISTRIVER_API_KEY

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

You need

PyPIPython’s uv installed (for the uvx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

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

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

{
  "mcpServers": {
    "listriver": {
      "command": "uvx",
      "args": [
        "listriver-mcp"
      ],
      "env": {
        "LISTRIVER_API_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add listriver --env LISTRIVER_API_KEY=your-value -- uvx listriver-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": {
    "listriver": {
      "command": "uvx",
      "args": [
        "listriver-mcp"
      ],
      "env": {
        "LISTRIVER_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": {
    "listriver": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "listriver-mcp"
      ],
      "env": {
        "LISTRIVER_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 one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

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

Values you fill in

LISTRIVER_API_KEY secret required env
Your ListRiver API key (free, 500 records a month: https://listriver.com/Account/ApiSignUp.aspx)

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

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

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 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account ListRiver-LLC, 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 applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Search & AI memoryi

More stars than 0% of the other 7251 servers in this category
Published to the registry more recently than 91% of the other 7251 servers in this category
Basic checks equal to or better than 100% of the other 7251 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 ListRiver 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: LISTRIVER_API_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.1.0) reached the registry 3 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Python (uv) on your computer.

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 today

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 20 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 last month

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.

ListRiver MCP server

Lets Claude and other AI assistants search new and active U.S. businesses from official state business registries through ListRiver: new LLCs, corporations and nonprofits by state, city, county, ZIP, NAICS industry, entity type, formation month, and whether a phone or email is on file.

Ask things like:

"How many businesses were formed in Miami-Dade in the last 3 months that have a phone number?"
"Find 20 new construction companies in Harris County, Texas."
"List new LLCs in ZIP 80202 formed this month, with their registered agents."

Tools

Tool	What it does	Cost
`list_states`	States covered and their record counts	free
`count_businesses`	How many businesses match a search, per state	free
`search_businesses`	The matching businesses (25 by default, up to 100 per call; `cursor` for more)	each business returned counts against your ListRiver records

The assistant is told to count first and to ask only for as many businesses as you need.

Setup

Get a free API key (500 records a month): listriver.com/Account/ApiSignUp.aspx
Install uv (it runs the server with uvx, no other install needed).
Add the server to your AI app.

Claude Desktop (Settings > Developer > Edit Config, then restart Claude Desktop):

"mcpServers": { "listriver": { "command": "uvx", "args": ["listriver-mcp"], "env": { "LISTRIVER_API_KEY": "lr_key_..." } } } }

Claude Code:

claude mcp add listriver -e LISTRIVER_API_KEY=lr_key_... -- uvx listriver-mcp

Other MCP clients: run uvx listriver-mcp (stdio) with LISTRIVER_API_KEY in the environment. Or pip install listriver-mcp and run listriver-mcp.

Source

The server is listriver_mcp/server.py in this folder (Python, built on the official MCP Python SDK, using the listriver client from this repository). Tests: tests/test_server.py.

Run from a clone of the repository:

pip install ./python ./mcp

LISTRIVER_API_KEY=lr_key_... listriver-mcp

or build the Dockerfile at the repository root: docker build -t listriver-mcp . then docker run -i --rm -e LISTRIVER_API_KEY=lr_key_... listriver-mcp.

Notes

Every business returned counts against your records each time it is returned; repeated or overlapping searches count again. Counting is free.
Phone, email, NAICS and county are on file for only part of the records, and coverage varies by state.
The data is for your own business use, not for resale or for credit, insurance, employment or housing decisions (ListRiver API agreement).
More: API documentation - support@listriver.com

MIT license.

ListRiver

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

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

ListRiver MCP server

Tools

Setup

Source

Notes