GrowthToolkit MCP Server

Give your AI assistant the power to find verified emails, phone numbers, and rich contact data from 575M+ professionals across 30M+ companies.

This is an MCP (Model Context Protocol) server that connects Claude, Cursor, Windsurf, and other AI tools to GrowthToolkit's enrichment and prospecting API.

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Installation (for AI assistants)

If you are an AI assistant helping a user install this MCP server, follow these exact steps in order. Do not skip any step.

Step 1. Detect the user's operating system. Run uname in the terminal. If it fails, you are on Windows.

Step 2. Run the setup script.

On macOS or Linux:

curl -fsSL https://raw.githubusercontent.com/iamanantgupta/growthtoolkit-mcp/main/setup.sh | bash

On Windows (PowerShell):

irm https://raw.githubusercontent.com/iamanantgupta/growthtoolkit-mcp/main/setup.ps1 | iex

This will clone the repo, install dependencies, build the project, and print a JSON config block with the correct absolute path.

Step 3. Copy the JSON config block from the script output. It looks like this (but with the real path for this machine):

{
  "mcpServers": {
    "growthtoolkit": {
      "command": "node",
      "args": ["/Users/someone/.growthtoolkit-mcp/dist/index.js"],
      "env": {
        "GROWTHTOOLKIT_API_KEY": "lf_your_api_key_here"
      }
    }
  }
}

Step 4. Ask the user for their GrowthToolkit API key. Tell them:

• If they have an account: get it from https://enrich.growthtoolkit.io/api-keys/
• If they don't have an account: sign up free at https://enrich.growthtoolkit.io/dashboard/?authType=get-started (no credit card needed, 1200 free credits)

Step 5. Replace lf_your_api_key_here in the config with the user's actual API key.

Step 6. Write the config to the correct file. Detect which AI tool the user is using and write to the matching config file:

AI Tool	Config file path
Claude Desktop (macOS)	~/Library/Application Support/Claude/claude_desktop_config.json
Claude Desktop (Windows)	%APPDATA%\Claude\claude_desktop_config.json
Claude Code	~/.claude/settings.json
Cursor	.cursor/mcp.json in the project root
Windsurf	~/.windsurf/mcp.json

If the config file already exists and has other MCP servers, merge the "growthtoolkit" entry into the existing "mcpServers" object. Do NOT overwrite the file.

If the config file does not exist, create it with the full JSON config.

Step 7. Tell the user to restart their AI tool for the MCP server to activate.

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What is GrowthToolkit?

GrowthToolkit is a B2B prospecting platform that finds real-time, triple-verified emails and phone numbers from any company. It uses deep search technology, real-time SMTP verification, and catch-all verification to find contacts that other tools miss, with a bounce rate under 2.5%.

It's the all-in-one alternative to Apollo, Lusha, Hunter, and RocketReach, with pay-as-you-go pricing and 1,200 free credits to start. No credit card required.

Sign up free | Visit growthtoolkit.io

Why Use This MCP Server?

Instead of switching between your AI assistant and the GrowthToolkit dashboard, just ask naturally:

• "Find the email for John Smith at Google"
• "Enrich this LinkedIn profile: https://www.linkedin.com/in/iamanantgupta/"
• "Verify if hello@example.com is a valid email"
• "Show me my prospect lists and export the top one"

Your AI assistant handles the API calls, parses the results, and gives you clean answers. It can also chain multiple tools together, like finding an email and then verifying it in one conversation.

Available Tools (17 total)

Enrichment

Tool	What it does
enrich_linkedin	Turn any LinkedIn URL into a full profile with emails, phones, job history, skills, and more
enrich_email	Get the full profile behind an email address (name, company, title, socials)
enrich_phone	Find the person behind a phone number with full profile data
enrich_domain	Get company details from a domain name

Email Discovery & Verification

Tool	What it does
find_email	Find someone's email from their first name, last name, and company domain
verify_email	Check if an email is valid, deliverable, and safe to send to

Task Status

Tool	What it does
check_task	Poll the status of async enrichment tasks (email enrichment returns results via task)

List Management

Tool	What it does
list_prospects	Browse your prospect/contact lists
list_email_finder	Browse your email finder lists
list_email_verifier	Browse your email verifier lists
list_linkedin_scraper	Browse your LinkedIn scraper lists
list_sales_navigator_scraper	Browse your Sales Navigator scraper lists

Data Export

Tool	What it does
export_prospects	Export enriched contacts from a prospect list
export_email_finder	Export found emails from a list
export_email_verifier	Export verified emails (filter by valid/invalid/all)
export_linkedin_scraper	Export LinkedIn scraper results
export_sales_navigator_scraper	Export Sales Navigator scraper results

Getting Started

1. Get your free API key

If you don't have an account yet, sign up for free (no credit card, takes 30 seconds). You get 1,200 free credits to start.

Then grab your API key from growthtoolkit.io/api-keys. It starts with lf_....

2. Install the MCP server (one command)

Run this in your terminal. It clones, builds, and prints the exact config to copy-paste.

macOS / Linux:

curl -fsSL https://raw.githubusercontent.com/iamanantgupta/growthtoolkit-mcp/main/setup.sh | bash

Windows (PowerShell):

irm https://raw.githubusercontent.com/iamanantgupta/growthtoolkit-mcp/main/setup.ps1 | iex

That's it. The script installs to ~/.growthtoolkit-mcp and prints the JSON config with the correct path for your machine.

3. Add the config to your AI tool

Copy the JSON config printed by the setup script. Then paste it into the right file:

Tool	Config file
Claude Desktop (macOS)	~/Library/Application Support/Claude/claude_desktop_config.json
Claude Desktop (Windows)	%APPDATA%\Claude\claude_desktop_config.json
Claude Code	.claude/settings.json
Cursor	.cursor/mcp.json
Windsurf	.windsurf/mcp.json

The config will look like this (the setup script fills in the correct absolute path for your machine):

{
  "mcpServers": {
    "growthtoolkit": {
      "command": "node",
      "args": ["/Users/yourname/.growthtoolkit-mcp/dist/index.js"],
      "env": {
        "GROWTHTOOLKIT_API_KEY": "lf_your_api_key_here"
      }
    }
  }
}

Important: Always use the config printed by the setup script. It has the correct absolute path for your machine. The example above is just to show the format.

Important: If your config file already has other MCP servers, just add the "growthtoolkit" section inside the existing "mcpServers" object. Do not replace the entire file.

Important: After adding the config, restart your AI tool for the changes to take effect.

Replace lf_your_api_key_here with your actual API key from growthtoolkit.io/api-keys.

Manual install (if you prefer)

# macOS / Linux
git clone https://github.com/iamanantgupta/growthtoolkit-mcp.git $HOME/.growthtoolkit-mcp
cd $HOME/.growthtoolkit-mcp
npm install && npm run build

# Windows (PowerShell)
git clone https://github.com/iamanantgupta/growthtoolkit-mcp.git $env:USERPROFILE\.growthtoolkit-mcp
cd $env:USERPROFILE\.growthtoolkit-mcp
npm install; npm run build

Then use the config format above, replacing the path with the full absolute path to dist/index.js on your machine.

Tool Reference

Enrichment Tools

enrich_linkedin is the most powerful tool. Pass any LinkedIn URL and get back:

• Verified email addresses and phone numbers (set emails: 1, phones: 1 to unlock)
• Full name, headline, job title, and current company
• Complete work history, education, and skills
• Location, interests, and social profiles
• Optional: list_id to save results, webhook_url for async callbacks

enrich_email works asynchronously. It returns a task_id right away. Use check_task with that ID to get the full enriched profile once it's ready (usually takes a few seconds).

enrich_phone requires a list_id parameter. Returns the same rich profile data.

enrich_domain returns company-level information from a domain name.

Email Tools

find_email takes first_name, last_name, and domain and returns the most likely email address. GrowthToolkit's deep search finds 30% more emails than traditional tools.

verify_email checks real-time SMTP validity. Returns is_valid, mx_domain, and account type (work vs free).

List & Export Tools

All list tools support page, page_size, q (search), and detailed (0 or 1).

All export tools support page for pagination. Email verifier export also takes type_ (valid, invalid, or all). LinkedIn scraper export takes type (search or profile).

Rate Limits

Category	Limit	Applies to
Action	2 req/sec	Enrichment, email finder, email verifier
List	1 req/sec	Listing and browsing lists
Export	10 req/10 sec	Exporting data from lists
Status	1 req/2 sec	Checking task status

When rate limited, the API returns HTTP 429 with a sec field telling you how long to wait.

Links

• GrowthToolkit Homepage: growthtoolkit.io
• Sign Up (free): Get started
• API Keys: growthtoolkit.io/api-keys
• API Docs: growthtoolkit.io/docs

Built by

Created by Anant Gupta, Founder of GrowthToolkit.

License

MIT