LeadBrew Server

Access millions of B2B leads directly from your AI coding assistant

Quick Start • Supported Assistants • Tools • Examples • API Reference

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LeadBrew MCP Server is a Model Context Protocol server that gives AI coding assistants access to the LeadBrew B2B lead database. Search for leads, get contact information, and find companies—all through natural language.

Features

• Millions of B2B Leads - Access verified business contacts with emails and phone numbers
• Company Database - Search companies by industry, size, and location
• Real-time Search - Find leads by name, title, company, or industry
• Free Tier - 100 leads/day included with every account
• Works Everywhere - Compatible with Claude Code, Cursor, Windsurf, and more

Quick Start

1. Get Your API Credentials

1. Sign up at leadbrew.co
2. Go to Settings → API Access
3. Click Generate API Key
4. Save your API Key and API Secret

2. Install the MCP Server

# Clone the repository
git clone https://github.com/FlatNineOrg/leadbrew-mcp.git
cd leadbrew-mcp

# Install dependencies
npm install

# Build the server
npm run build

3. Configure Your AI Assistant

See configuration instructions for your specific assistant.

Supported Assistants

Claude Code (Anthropic)

Add to ~/.claude/claude_desktop_config.json:

{
  "mcpServers": {
    "leadbrew": {
      "command": "node",
      "args": ["/path/to/leadbrew-mcp/dist/index.js"],
      "env": {
        "LEADBREW_API_KEY": "lb_your_api_key_here",
        "LEADBREW_API_SECRET": "your_api_secret_here"
      }
    }
  }
}

Cursor

Add to your Cursor MCP settings (Settings → MCP Servers):

{
  "leadbrew": {
    "command": "node",
    "args": ["/path/to/leadbrew-mcp/dist/index.js"],
    "env": {
      "LEADBREW_API_KEY": "lb_your_api_key_here",
      "LEADBREW_API_SECRET": "your_api_secret_here"
    }
  }
}

Windsurf

Add to your Windsurf configuration:

{
  "mcpServers": {
    "leadbrew": {
      "command": "node",
      "args": ["/path/to/leadbrew-mcp/dist/index.js"],
      "env": {
        "LEADBREW_API_KEY": "lb_your_api_key_here",
        "LEADBREW_API_SECRET": "your_api_secret_here"
      }
    }
  }
}

Cline / Roo Code

Add to your VS Code settings:

{
  "cline.mcpServers": {
    "leadbrew": {
      "command": "node",
      "args": ["/path/to/leadbrew-mcp/dist/index.js"],
      "env": {
        "LEADBREW_API_KEY": "lb_your_api_key_here",
        "LEADBREW_API_SECRET": "your_api_secret_here"
      }
    }
  }
}

OpenAI Codex / ChatGPT

For OpenAI-based assistants, use the REST API directly. See REST API examples.

Available Tools

Tool	Description
leadbrew_search_leads	Search for leads by name, company, industry, position, country
leadbrew_get_lead	Get full lead details including emails and phone numbers
leadbrew_search_companies	Search for companies by name, industry, size
leadbrew_get_company	Get company details with employee list
leadbrew_usage	Check your API quota and usage statistics

Examples

Finding Decision Makers

You: Find CTOs at fintech companies in New York

AI: [Searches using leadbrew_search_leads]

Found 156 leads matching your criteria:

**John Smith**
Position: Chief Technology Officer
Company: PayFlow Inc (Fintech)
Country: US
LinkedIn: https://linkedin.com/in/johnsmith
Lead ID: TGVhZGJyZXdtaWtlXzEyMzQ1

**Sarah Johnson**
Position: CTO
Company: BlockPay Solutions (Fintech)
Country: US
LinkedIn: https://linkedin.com/in/sarahjohnson
Lead ID: TGVhZGJyZXdtaWtlXzY3ODkw

... and 154 more results

Getting Contact Information

You: Get the contact details for John Smith

AI: [Uses leadbrew_get_lead with the lead ID]

**John Smith**
Position: Chief Technology Officer
Company: PayFlow Inc (Fintech)
Country: US
LinkedIn: https://linkedin.com/in/johnsmith

Emails:
  - [email protected]
  - [email protected]

Phones:
  - +1 (555) 123-4567

Building a Lead List

You: Find 10 marketing directors at SaaS companies with 50-200 employees

AI: [Searches with position="Marketing Director", industry="SaaS", min_size=50, max_size=200]

Found 89 leads. Here are the first 10:

1. **Emily Chen** - Marketing Director at CloudMetrics (Software/SaaS)
2. **Michael Brown** - Director of Marketing at DataSync Pro (SaaS)
3. **Jessica Williams** - Marketing Director at AppFlow Systems (SaaS)
...

Researching Companies

You: Tell me about Stripe's team

AI: [Uses leadbrew_get_company with include_employees=true]

**Stripe**
Website: stripe.com
Industry: Financial Technology
Size: 8,000+ employees
LinkedIn: https://linkedin.com/company/stripe

Employees in database: 234

Sample employees:
  - Patrick Collison (CEO)
  - John Collison (President)
  - Claire Hughes Johnson (COO)
  - David Singleton (CTO)
  - Dhivya Suryadevara (CFO)

Checking Your Quota

You: How many leads do I have left today?

AI: [Uses leadbrew_usage]

**LeadBrew API Usage**

Today's Usage:
  Leads used: 45/100
  Leads remaining: 55
  Requests made: 12

Last 7 Days:
  Total leads: 312
  Total requests: 89

Tool Reference

leadbrew_search_leads

Search for B2B leads with various filters.

Parameters:

Parameter	Type	Description
q	string	Search query for lead name
company	string	Filter by company name
industry	string	Filter by industry
position	string	Filter by job title
country	string	Country code (US, UK, DE, etc.)
limit	number	Results per page (1-25)
page	number	Page number

leadbrew_get_lead

Get detailed information about a specific lead.

Parameters:

Parameter	Type	Required	Description
id	string	Yes	Lead ID from search results

Returns: Full lead profile including emails and phone numbers.

leadbrew_search_companies

Search for companies in the database.

Parameters:

Parameter	Type	Description
q	string	Company name search
industry	string	Filter by industry
country	string	Country code
min_size	number	Minimum employee count
max_size	number	Maximum employee count
limit	number	Results per page (1-25)
page	number	Page number

leadbrew_get_company

Get company details with optional employee list.

Parameters:

Parameter	Type	Required	Description
id	string	Yes	Company ID or LinkedIn handle
include_employees	boolean	No	Include employee list

leadbrew_usage

Check your API usage and quota.

Parameters:

Parameter	Type	Description
days	number	Days of history (1-90)

Rate Limits

Limit	Value
Daily lead quota	100 leads
Max per request	25 leads
Company searches	Unlimited
Rate limit reset	Midnight UTC

REST API

You can also use the LeadBrew REST API directly:

curl -X GET "https://leadbrew.co/api/v1/leads?q=john&industry=Technology&limit=10" \
  -H "X-API-Key: lb_your_api_key" \
  -H "X-API-Secret: your_api_secret"

See examples/rest-api.md for more REST API examples.

Troubleshooting

"API credentials not configured"

Make sure your environment variables are set correctly:

• LEADBREW_API_KEY should start with lb_
• LEADBREW_API_SECRET should be 64 characters

"Rate limit exceeded"

You've used your daily quota of 100 leads. The limit resets at midnight UTC.

"Invalid API credentials"

Check that:

1. Your API key is active (not revoked)
2. The key and secret match
3. No extra spaces in your configuration

Support

• Documentation: leadbrew.co/api-docs
• Issues: GitHub Issues
• Email: [email protected]

License

MIT License - See LICENSE for details.

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Made with ❤️ by LeadBrew