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Version: v1.6.47-dev1 🚧

N8N Workflow Builder MCP Server

Overview​

n8n is a workflow automation platform for integrating services and orchestrating business processes. The n8n MCP server enables Enterprise h2oGPTe agents to create, list, execute, and inspect n8n workflows through natural language.

For more information, visit n8n.

When to use​

Use this MCP server when you want agents to:

  • Trigger existing n8n workflows from chat
  • Create or update workflows programmatically
  • Execute workflows and retrieve results as part of an automated process

Requirements​

Before configuring this MCP server, ensure you have:

  • An n8n instance accessible from your h2oGPTe deployment
  • An n8n API key with permissions to manage and execute workflows
  • The base URL for your n8n instance

Key capabilities​

The n8n MCP server provides tools to:

  • Create new workflows
  • List and inspect existing workflows
  • Execute workflows on demand
  • Retrieve workflow details and status

Configuration​

Add the following configuration in Agents > Tools > New Tool > Remote MCP Tools:

{
  "n8n": {
    "command": "npx",
    "args": [
      "-y",
      "mcp-n8n-builder"
    ],
    "env": {
      "N8N_HOST": "os.environ/N8N_HOST",
      "N8N_API_KEY": "os.environ/N8N_API_KEY",
      "OUTPUT_VERBOSITY": "concise"
    }
  }
}

Authentication​

In Agents > Authentication, create a secret with:

  • N8N_HOST: Base URL of your n8n instance (for example, https://n8n.example.com)
  • N8N_API_KEY: API key for authenticating requests from the MCP server

Notes​

  • This MCP server uses STDIO transport via npx.
  • Ensure your n8n instance is secured (for example, behind HTTPS) and that the API key has the minimal necessary permissions.
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