Leadquasar MCP Server

by si-imtiaz Your server? Claim it

answering

Leadquasar is answering right now. Last checked 2 min ago. It exposes 3 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 30 days of history · worst day 99%

30 days agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

286 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 3

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

14 Sep a tool changed version

31 Aug 2 tools changed the parameters they ask for count_businesses, search_businesses

This one has been quiet for a while

Quiet is not dead — but it is worth knowing when it wakes up, or when someone else takes it over. We watch the repository and tell you either way.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 2 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

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "leadquasar": {
      "url": "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

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

Available tools 3

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 US B2B businesses in the LeadQuasar database matching an industry, 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' or 'how many dentists in Chicago have a business email'. Returns real counts from 7.5 million live records.

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.

Endpoints

URL	Transport	State	Latency	Checked
https://leadquasar.com/api/mcp	streamable-http	answering	316 ms	2 min ago

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Leadquasar — questions

Answers built from our own checks of this server.

What can Leadquasar do?

It exposes 3 tools, read directly from the server on our last check. Among them: count_businesses, list_industries, search_businesses. 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 92 of 92 checks got a reply (100.0%), average response time 286 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 with the file path 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 3 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 286 ms on average, which is faster than 52% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.