RevenueBase MCP Server

A Model Context Protocol (MCP) server that provides access to RevenueBase's industry-leading email verification API. This server enables AI assistants and applications to verify business emails, including catch-all and firewall-protected domains, with over 99% accuracy.

Features

• Real-time Email Verification: Verify individual email addresses instantly

• Batch Email Processing: Submit and process large email lists

• Process Management: Monitor, cancel, and track batch processing jobs

• Credit Management: Check remaining API credits

• API Key Management: Generate new API keys

• High Accuracy: Over 99% accuracy for B2B email verification

• Catch-All Domain Support: Verify catch-all email domains that other tools can't handle

• Firewall Navigation: Bypass email firewalls like Mimecast and Barracuda

Related MCP server: json-mcp-server

About RevenueBase

RevenueBase provides industry-leading email verification services specifically built for B2B data providers. With the ability to verify catch-all and firewall-protected domains, RevenueBase ensures maximum accuracy where other services fall short.

Learn more about RevenueBase's email verification services at: https://revenuebase.ai/email-list-cleaning/

Installation

1. Clone this repository:

git clone https://github.com/avivshafir/revenuebase-mcp-server
cd revenuebase-mcp-server

2. Install dependencies using uv:

uv sync

3. Set up your RevenueBase API key:

export REVENUEBASE_API_KEY="your_api_key_here"

Usage

Running the Server

python server.py

The server will start and be available for MCP connections.

Using with MCP Clients

Claude Desktop

To use this server with Claude Desktop, add the following configuration to your Claude Desktop config file:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "revenuebase": {
      "command": "uv",
      "args": ["--directory", "/path/to/revenuebase-mcp-server", "run", "python", "server.py"],
      "env": {
        "REVENUEBASE_API_KEY": "your_api_key_here"
      }
    }
  }
}

Replace /path/to/revenuebase-mcp-server with the actual path to your cloned repository and your_api_key_here with your actual RevenueBase API key.

Other MCP Clients

For other MCP clients, you can connect to the server using the stdio transport. The server runs as a standard MCP server and accepts connections on stdin/stdout.

Example using the MCP Python SDK:

from mcp import ClientSession, StdioServerParameters
from mcp.client.stdio import stdio_client

server_params = StdioServerParameters(
    command="python",
    args=["server.py"],
    env={"REVENUEBASE_API_KEY": "your_api_key_here"}
)

async with stdio_client(server_params) as (read, write):
    async with ClientSession(read, write) as session:
        # Initialize the connection
        await session.initialize()
        
        # List available tools
        tools = await session.list_tools()
        print("Available tools:", [tool.name for tool in tools.tools])
        
        # Call a tool
        result = await session.call_tool("real_time_email_verification", {
            "email": "test@example.com"
        })
        print("Verification result:", result)

Available Tools

1. Real-time Email Verification

Verify a single email address instantly.

Parameters:

• email (string): The email address to verify

Example:

real_time_email_verification("user@example.com")

2. Batch Email Submission

Submit a file reference for batch email processing.

Parameters:

• filename (string): The filename reference for batch processing

Example:

batch_email_submission("email_list.csv")

3. Batch Process Status

Check the status of a batch email processing job.

Parameters:

• process_id (int): The ID of the batch processing job

Example:

batch_process_email_status(12345)

4. Queued Processes

List all queued email batch processing jobs.

Example:

queued_process()

5. Cancel Process

Cancel an ongoing or queued batch email processing job.

Parameters:

• process_id (int): The ID of the process to cancel

Example:

cancel_process(12345)

6. Get Credits

Retrieve the number of remaining credits for your account.

Example:

get_credits()

7. Generate New API Key

Generate and return a new API key.

Example:

new_api_key()

Configuration

Environment Variables

• REVENUEBASE_API_KEY: Your RevenueBase API key (required)

API Endpoints

The server connects to the following RevenueBase API endpoints:

• https://api.revenuebase.ai/v1/process-email - Real-time email verification

• https://api.revenuebase.ai/v1/batch-process-email - Batch email submission

• https://api.revenuebase.ai/v1/batch-process-email-status - Batch status check

• https://api.revenuebase.ai/v1/queued-process - List queued processes

• https://api.revenuebase.ai/v1/cancel-process - Cancel process

• https://api.revenuebase.ai/v1/credits - Get credits

• https://api.revenuebase.ai/v1/new-api-key - Generate new API key

Error Handling

All tools include proper error handling and will raise RuntimeError if the API key is not configured. HTTP errors from the RevenueBase API are automatically raised using requests.raise_for_status().

Requirements

• Python 3.7+

• fastmcp

• requests

License

This project is licensed under the MIT License - see the LICENSE file for details.

Support

For RevenueBase API support and documentation, visit:

• RevenueBase Email Verification

• RevenueBase API Documentation

For issues with this MCP server, please open an issue in this repository.