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n8n Workflow Builder MCP Server

@makafeli

Repository

About n8n Workflow Builder MCP Server

AI assistant integration for n8n workflow automation through Model Context Protocol (MCP). Connect Claude Desktop, ChatGPT, and other AI assistants to n8n for natural language workflow management.

Config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "n8n-workflow-builder": {
      "command": "npx",
      "args": [
        "@makafeli/n8n-workflow-builder"
      ]
    }
  }
}

Tools

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Overview

What is n8n Workflow Builder MCP Server?

A Model Context Protocol (MCP) server that bridges AI assistants (such as Claude Desktop, ChatGPT, or any MCP-compatible client) with an n8n automation instance. It enables natural-language workflow management, creation, execution, and monitoring through the n8n API.

How to use n8n Workflow Builder MCP Server?

Install via NPX (npx @makafeli/n8n-workflow-builder) or use the hosted Smithery.ai version. Set environment variables N8N_HOST (your n8n URL) and N8N_API_KEY (from n8n Settings > API Keys). Configure the server in your MCP client (e.g., Claude Desktop, Cline) with the same command and env values.

Key features of n8n Workflow Builder MCP Server

  • Complete CRUD operations for n8n workflows
  • AI-first design built for assistant integration
  • Zero configuration with NPX run
  • Secure via n8n official API with authentication
  • Modern TypeScript architecture with MCP SDK
  • High performance with optimized response times

Use cases of n8n Workflow Builder MCP Server

  • List and browse existing n8n workflows through conversation
  • Create new workflows with complex node configurations
  • Execute workflows on demand via natural language
  • Manage workflow lifecycle (activate, deactivate, update, delete)

FAQ from n8n Workflow Builder MCP Server

What are the system requirements?

Node.js v18.0.0 or higher, a running n8n instance (self-hosted or cloud), and an n8n API key with appropriate permissions.

How do I get an n8n API key?

In your n8n instance, go to Settings → API Keys → Create API Key, then copy the generated key.

Is there a hosted version available?

Yes, the server is available as a hosted service on Smithery.ai with no local installation required.

Which MCP clients are supported?

The server works with any MCP-compatible client; explicit setup instructions are provided for Claude Desktop and Cline (VS Code extension).

How do I configure environment variables?

Set N8N_HOST to your n8n instance URL (e.g., http://localhost:5678) and N8N_API_KEY to your API key, then export them or include them in your MCP client’s config JSON.

Frequently asked questions

What are the system requirements?

Node.js v18.0.0 or higher, a running n8n instance (self-hosted or cloud), and an n8n API key with appropriate permissions.

How do I get an n8n API key?

In your n8n instance, go to Settings → API Keys → Create API Key, then copy the generated key.

Is there a hosted version available?

Yes, the server is available as a hosted service on Smithery.ai with no local installation required.

Which MCP clients are supported?

The server works with any MCP-compatible client; explicit setup instructions are provided for Claude Desktop and Cline (VS Code extension).

How do I configure environment variables?

Set `N8N_HOST` to your n8n instance URL (e.g., `http://localhost:5678`) and `N8N_API_KEY` to your API key, then export them or include them in your MCP client’s config JSON.

Comments

Basic information

Category

Reasoning

License

MIT

Transports

stdio

Author

makafeli

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