N8N MCP Server

This is a Model Control Protocol (MCP) server for interacting with N8N's API. It provides a simplified interface to access N8N functionality through MCP endpoints.

What is this?

This MCP server acts as a bridge between AI assistants like Claude and the N8N automation platform. It allows AI assistants to:

• List, create, update, and delete workflows
• Execute workflows and manage workflow executions
• Manage credentials and tags
• Integrate N8N capabilities into conversation flows

Requirements

• Node.js 16+
• An N8N instance with API access
• An N8N API key

Setup

1. Clone this repository:

   git clone https://github.com/bader1919/n8n-mcp-server.git
   cd n8n-mcp-server
   

2. Install dependencies:

   npm install
   

3. Configure your environment variables:

   • Copy .env.example to .env
   • Fill in your N8N API details:
     • N8N_API_BASE_URL: URL of your N8N API (default: http://localhost:5678/api/v1)
     • N8N_API_KEY: Your N8N API key
     • PORT: Port where this MCP server will run (default: 3000)

4. Start the server:

   npm start
   

Available Endpoints

Workflows

• /mcp/listWorkflows: Get all workflows
• /mcp/getWorkflow: Get a specific workflow by ID
• /mcp/createWorkflow: Create a new workflow
• /mcp/updateWorkflow: Update an existing workflow
• /mcp/deleteWorkflow: Delete a workflow
• /mcp/activateWorkflow: Activate a workflow
• /mcp/deactivateWorkflow: Deactivate a workflow

Executions

• /mcp/listExecutions: Get all executions, optionally filtered by workflow
• /mcp/getExecution: Get a specific execution by ID
• /mcp/deleteExecution: Delete an execution
• /mcp/executeWorkflow: Execute a workflow with optional data

Credentials

• /mcp/listCredentials: Get all credentials
• /mcp/getCredential: Get a specific credential by ID
• /mcp/createCredential: Create a new credential
• /mcp/updateCredential: Update an existing credential
• /mcp/deleteCredential: Delete a credential

Tags

• /mcp/listTags: Get all tags
• /mcp/createTag: Create a new tag
• /mcp/deleteTag: Delete a tag

Using with Claude

To use this MCP server with Claude, install it as follows:

install_local_mcp_server path="./n8n-mcp-server"

Then you can access the N8N functionality through the MCP endpoints. Claude can help you build and execute N8N workflows through natural language conversations.

Example Usage

Here's an example of how to list all workflows:

// Example call to listWorkflows
const result = await listWorkflows();
console.log(result);

To execute a workflow:

// Example call to executeWorkflow
const result = await executeWorkflow({
  workflowId: "1234",
  data: {
    input1: "value1",
    input2: "value2"
  }
});
console.log(result);

See example-client.js for more examples.

Security Considerations

• This MCP server requires N8N API credentials to function
• Be cautious about exposing this server to the public internet
• Consider using API keys or other authentication mechanisms if deploying in production

License

MIT

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.