MCP Kit

🚀 MCP Kit Server

An MCP server connecting AI assistants like Claude to the Kit.com email marketing platform, enabling natural - language management of email - related tasks.

🚀 Quick Start

The MCP (Model Context Protocol) server connects AI assistants such as Claude to the Kit.com (formerly ConvertKit) email marketing platform. You can manage your email lists, subscribers, broadcasts, sequences, and more through natural language.

✨ Features

Complete Tool Reference

Account

• kit_get_account - Get Kit.com account information

Subscribers (7 tools)

• kit_list_subscribers - List subscribers with filters (status, date ranges, pagination)
• kit_get_subscriber - Get a specific subscriber by ID
• kit_create_subscriber - Create a new subscriber
• kit_update_subscriber - Update subscriber details
• kit_get_subscriber_tags - Get all tags for a subscriber
• kit_add_tag_to_subscriber - Add a tag to a subscriber
• kit_remove_tag_from_subscriber - Remove a tag from a subscriber

Tags (6 tools)

• kit_list_tags - List all tags
• kit_get_tag - Get a specific tag
• kit_create_tag - Create a new tag
• kit_update_tag - Rename a tag
• kit_delete_tag - Delete a tag
• kit_list_tag_subscribers - List all subscribers with a specific tag

Sequences (3 tools)

• kit_list_sequences - List all email sequences
• kit_get_sequence - Get sequence details
• kit_add_subscriber_to_sequence - Add subscriber to a sequence

Broadcasts (5 tools)

• kit_list_broadcasts - List all broadcasts
• kit_get_broadcast - Get broadcast details
• kit_create_broadcast - Create a new broadcast
• kit_update_broadcast - Update a broadcast
• kit_delete_broadcast - Delete a broadcast

Forms (3 tools)

• kit_list_forms - List all forms
• kit_get_form - Get form details
• kit_add_subscriber_to_form - Add subscriber via form

Custom Fields (1 tool)

• kit_list_custom_fields - List all custom fields

Webhooks (3 tools)

• kit_list_webhooks - List configured webhooks
• kit_create_webhook - Create a new webhook
• kit_delete_webhook - Delete a webhook

📦 Installation

Option 1: Install from npm (recommended)

npx kit-mcp-server

Or install globally:

npm install -g kit-mcp-server

Option 2: Clone and Build

git clone https://github.com/aplaceforallmystuff/mcp-kit.git
cd mcp-kit
npm install
npm run build

📚 Documentation

Prerequisites

• Node.js 18+
• A Kit.com account
• Your Kit.com API key (v4 API)

Configuration

1. Get Your Kit.com API Key

1. Log in to Kit.com
2. Navigate to Settings > Developer
3. Create a new API key or copy an existing v4 API key

2. Configure Your MCP Client

For Claude Desktop

Add to your Claude Desktop config file: macOS: ~/Library/Application Support/Claude/claude_desktop_config.json Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "kit": {
      "command": "node",
      "args": ["/path/to/mcp-kit/dist/index.js"],
      "env": {
        "KIT_API_KEY": "your-api-key-here"
      }
    }
  }
}

For Claude Code

claude mcp add kit -e KIT_API_KEY=your-api-key-here -- node /path/to/mcp-kit/dist/index.js

Or add to ~/.claude.json:

{
  "mcpServers": {
    "kit": {
      "command": "node",
      "args": ["/path/to/mcp-kit/dist/index.js"],
      "env": {
        "KIT_API_KEY": "your-api-key-here"
      }
    }
  }
}

💻 Usage Examples

Once configured, you can interact with Kit.com through natural language:

Subscriber Management

"Show me all active subscribers from the last 30 days" "Create a new subscriber with email user@example.com and tag them as 'newsletter'" "What tags does subscriber@example.com have?"

Tag Operations

"List all my tags and how many subscribers each has" "Create a tag called 'VIP Customers'" "Add the 'engaged' tag to all subscribers who signed up this month"

Email Sequences

"Show me all my email sequences" "Add user@example.com to the welcome sequence"

Broadcasts

"Create a draft broadcast with subject 'Weekly Update' and preview text 'This week in AI...'" "List all my recent broadcasts and their stats"

Forms

"Show me all active forms" "Add a subscriber to my main signup form"

🔧 Technical Details

Development

# Run in development mode (watches for changes)
npm run dev

# Build for production
npm run build

# Run the built version
npm start

Troubleshooting

"KIT_API_KEY environment variable is required"

Ensure you have set the KIT_API_KEY environment variable in your MCP configuration.

"Kit API error (401)"

Your API key is invalid or expired. Generate a new one from Kit.com Settings > Developer.

"Kit API error (403)"

Your API key doesn't have permission for this operation. Check that you're using a v4 API key with appropriate scopes.

"Kit API error (404)"

The resource (subscriber, tag, broadcast, etc.) was not found. Verify the ID is correct.

"Kit API error (422)"

Invalid request data. Check that email addresses are valid and required fields are provided.

API Reference

This server uses the Kit.com API v4. All tools support pagination where applicable using per_page and after cursor parameters.

🤝 Contributing

Contributions are welcome! Please see CONTRIBUTING.md for guidelines.

📄 License

MIT License - see LICENSE for details.

🔗 Links

• Kit.com
• Kit.com API Documentation
• Model Context Protocol
• MCP Specification