n8n Workflow Builder MCP Server
@makafeli
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
23List all workflows from n8n instance
Create a new workflow in n8n
Get a workflow by ID
Update an existing workflow by ID
Delete a workflow by ID
Activate a workflow by ID
Deactivate a workflow by ID
Execute a workflow manually
Create a new workflow and immediately activate it
List workflow executions with filtering and pagination support
Get detailed information about a specific workflow execution
Delete a workflow execution record from the n8n instance
List all workflow tags with pagination support
Create a new workflow tag for organization and categorization
Retrieve individual tag details by ID
Modify tag names for better organization
Remove unused tags from the system
Get all tags associated with a specific workflow
Assign or remove tags from workflows
Create a new credential for workflow authentication. Use get_credential_schema first to understand required fields for the credential type.
Get the schema for a specific credential type to understand what fields are required when creating credentials.
Delete a credential by ID. This will remove the credential and make it unavailable for workflows. Use with caution as this action cannot be undone.
Generate a comprehensive security audit report for the n8n instance
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.
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