n8n MCP Server

A Model Context Protocol (MCP) server that allows AI assistants to interact with n8n workflows through natural language.

Overview

This MCP server provides tools and resources for AI assistants to manage n8n workflows and executions. It allows assistants to:

• List, create, update, and delete workflows
• Activate and deactivate workflows
• Execute workflows and monitor their status
• Access workflow information and execution statistics

Installation

Prerequisites

• Node.js 18 or later
• n8n instance with API access enabled

Install from npm

npm install -g n8n-mcp-server

Install from source

# Clone the repository
git clone https://github.com/leonardsellem/n8n-mcp-server.git
cd n8n-mcp-server

# Install dependencies
npm install

# Build the project
npm run build

# Optional: Install globally
npm install -g .

Configuration

Create a .env file in the directory where you'll run the server, using .env.example as a template:

cp .env.example .env

Configure the following environment variables:

Variable	Description	Example
N8N_API_URL	URL of the n8n API	http://localhost:5678/api/v1
N8N_API_KEY	API key for authenticating with n8n	n8n_api_...
DEBUG	Enable debug logging (optional)	true or false

Generating an n8n API Key

1. Open your n8n instance in a browser
2. Go to Settings > API > API Keys
3. Create a new API key with appropriate permissions
4. Copy the key to your .env file

Usage

Running the Server

From the installation directory:

n8n-mcp-server

Or if installed globally:

n8n-mcp-server

Integrating with AI Assistants

To use this MCP server with AI assistants, you need to register it with your AI assistant platform. The exact method depends on the platform you're using.

For example, with the MCP installer:

npx @anaisbetts/mcp-installer

            Then register the server:

install_local_mcp_server path/to/n8n-mcp-server

Available Tools

The server provides the following tools:

Workflow Management

• workflow_list: List all workflows
• workflow_get: Get details of a specific workflow
• workflow_create: Create a new workflow
• workflow_update: Update an existing workflow
• workflow_delete: Delete a workflow
• workflow_activate: Activate a workflow
• workflow_deactivate: Deactivate a workflow

Execution Management

• execution_run: Execute a workflow
• execution_get: Get details of a specific execution
• execution_list: List executions for a workflow
• execution_stop: Stop a running execution

Resources

The server provides the following resources:

• n8n://workflows/list: List of all workflows
• n8n://workflow/{id}: Details of a specific workflow
• n8n://executions/{workflowId}: List of executions for a workflow
• n8n://execution/{id}: Details of a specific execution

Development

Building

npm run build

Running in Development Mode

npm run dev

Testing

npm test

Linting

npm run lint

License

MIT