ListRiver runs on your own machine — the client starts it, so there is no endpoint to ping. 407 installs a week from pypi. Last commit 4 Nov 2026.
Search new and active U.S. businesses from state registries: new LLCs by state, city, ZIP, NAICS.
Nothing serious here today
Today is the operative word: we check ListRiver every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
Connect this server
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add listriver -e 'LISTRIVER_API_KEY=<LISTRIVER_API_KEY>' -- uvx listriver-mcp{
"mcpServers": {
"listriver": {
"command": "uvx",
"args": [
"listriver-mcp"
],
"env": {
"LISTRIVER_API_KEY": "<LISTRIVER_API_KEY>"
}
}
}
}[mcp_servers.listriver]
command = "uvx"
args = ["listriver-mcp"]
env = { LISTRIVER_API_KEY = "<LISTRIVER_API_KEY>" }{
"mcpServers": {
"listriver": {
"command": "uvx",
"args": [
"listriver-mcp"
],
"env": {
"LISTRIVER_API_KEY": "<LISTRIVER_API_KEY>"
}
}
}
}{
"servers": {
"listriver": {
"type": "stdio",
"command": "uvx",
"args": [
"listriver-mcp"
],
"env": {
"LISTRIVER_API_KEY": "<LISTRIVER_API_KEY>"
}
}
}
}Put your own value in place of
<LISTRIVER_API_KEY> (Your ListRiver API key (free, 500 records a month: https://listriver.com/Account/ApiSignUp.aspx)).
The author’s registry entry marks it as required.
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ListRiver — questions
Answers built from our own checks of this server.