Leadquasar MCP Server

by si-imtiaz Your server? Claim it

answering

Leadquasar is answering right now. Last checked 5 min ago. It exposes 4 tools.

Counts and firmographics for 7.5M+ verified US B2B businesses, by industry, state and city.

The linked repository no longer exists on GitHub — it was deleted or made private.

Uptime history 76 days of history · worst day 97%

76 days agonow

98.9%

Uptime 24h

90 of 91 checks

Tools

read from the server

661 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 122

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 31 August 2026. No other catalogue keeps this.

3 Nov 2 tools changed the parameters they ask for6 times that day count_businesses, search_businesses

2 Nov 2 tools changed the parameters they ask for10 times that day count_businesses, search_businesses

2 Nov a tool appeared search_volume

28 Oct 2 tools changed the parameters they ask for count_businesses, search_businesses

19 Oct 2 tools changed the parameters they ask for count_businesses, search_businesses

15 Oct 2 tools changed the parameters they ask for4 times that day count_businesses, search_businesses

14 Oct 2 tools changed the parameters they ask for count_businesses, search_businesses

13 Oct 2 tools changed the parameters they ask for6 times that day count_businesses, search_businesses

10 Oct 2 tools changed the parameters they ask for4 times that day count_businesses, search_businesses

10 Oct a tool description was rewritten count_businesses

and 104 more, back to 31 August 2026

Leadquasar missed one check this week

Everything else answered, so this is steady rather than shaky. We check every 15 minutes, which is how a one-off gets told apart from the start of a pattern, and how you hear about the next one within the hour instead of from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 5 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add leadquasar --transport http https://leadquasar.com/api/mcp

Settings → Connectors → Add custom connector, then paste this address

https://leadquasar.com/api/mcp

~/.codex/config.toml

[mcp_servers.leadquasar]
url = "https://leadquasar.com/api/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "leadquasar": {
      "url": "https://leadquasar.com/api/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "leadquasar": {
      "type": "http",
      "url": "https://leadquasar.com/api/mcp"
    }
  }
}

Available tools 4

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

businesses

search_businesses

Return a sample of matching businesses with industry, location and data-quality signals. Contact details (name, company, email, phone, address) are never returned by this tool — it shows what exists and how reachable it is, not who to call.

count

count_businesses

Count verified B2B businesses in the LeadQuasar database matching an industry, country, US state and/or city, with how many have an email address and a phone number. Use this to answer questions like 'how many managed service providers are there in Texas', 'how many dentists in Chicago have a business email' or 'how many movers are there in London' (country GB). Returns real counts from 9.7 million+ live records, most of them US.

industries

list_industries

List the industries LeadQuasar covers and how many verified businesses each holds. Use this first when unsure what industry wording will match.

volume

search_volume

How many people search Google each month for a keyword in a city, region or country (Google Ads Keyword Planner data, via LeadQuasar KeywordQuasar), with a few related searches and how many matching businesses LeadQuasar holds there. Use this to answer questions like 'how many people search for plumber in Austin' or 'search volume for wedding photographer in Manchester'. When the place name matches several places the response lists them under `choose`: ask the user which, then call again with that place's geoId. Each connection has a few lookups a day; quote `source` and give `link` with the numbers. Contact details are never returned.

Endpoints

URL	Transport	State	Latency	Checked
https://leadquasar.com/api/mcp	streamable-http	answering	414 ms	5 min ago

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Leadquasar — questions

Answers built from our own checks of this server.

What can Leadquasar do?

It exposes 4 tools, read directly from the server on our last check. Among them: count_businesses, list_industries, search_businesses, search_volume. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Leadquasar working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 90 of 91 checks got a reply (98.9%), average response time 661 ms. The bar chart above shows every period we have measured.

Is Leadquasar still maintained?

The linked repository no longer exists on GitHub — it was deleted or made private. We show this because it changes what you can expect: an unmaintained server may keep answering for months and then stop without warning.

How do I connect Leadquasar?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Leadquasar need an API key?

No. Leadquasar completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 4 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Leadquasar?

It answers our handshake in 661 ms on average, which is faster than 15% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.