Leadquasar

io.github.si-imtiazPublished by GitHub account si-imtiazv1.0.0Updated Oct 24, 2026

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

VerifiedStreamable HTTPWeb executableData & AnalyticsBusiness & Commerce

Overview

AI-generated overview

A remote MCP server that lets an assistant count and sample verified US B2B businesses by industry, state and city.

What you can do
Count verified businesses matching an industry, country, US state and/or city, including how many have an email or phone on file. Sample matching businesses with industry, location and data-quality signals. List the industries covered and how many verified businesses each holds. Contact details such as names, emails, phones and addresses are never returned.
When to use it
Useful for market-sizing and prospecting research questions, such as how many managed service providers operate in Texas or how many dentists in Chicago have a business email, and for checking which industries the database covers before querying.
Requirements
A remote streamable HTTP endpoint at leadquasar.com; no local runtime, package, environment variables or headers are declared. Network access to that endpoint is required.
Before you install
The tools are read-only and return counts and samples, not contact details. Queries are sent to a third-party service, so consider whether your industry and location queries are sensitive. No authentication is declared.

Installation

In SourceWeft

  1. Open Leadquasar in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.github.si-imtiaz%2Fleadquasar/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

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

README

This repository has no README.

Tools

3

count_businesses

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 9.6 million+ live records, most of them US.

Parameterscitystatecountryindustryno_website

search_businesses

Sample matching 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.

Parameterscitylimitstatecountryindustryno_website

list_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.

Takes no parameters.

Version history

1
  1. v1.0.0LatestSep 16, 2026

Score

75% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • License10 pts

    Declare a license in the repository or the registry entry.