Installing Open Design on Hermes: A Quick Start Guide

Open design on Hermes Agent

Open Design is a powerful design system and agentic toolkit that integrates with Hermes Agent via MCP (Model Context Protocol). This setup lets you automate UI/UX improvements, generate design assets, and streamline your content creation workflow — all from within Hermes.

In this tutorial, you'll learn how to install Open Design CLI, configure Hermes to communicate with it, and verify the integration works.

Prerequisites

• Hermes Agent already installed and running
• Node.js 18+ and npm (for global CLI installation)
• A terminal (Git Bash, PowerShell, or cmd)
• Basic familiarity with editing config.yaml files
• Internet access

Step 1: Install Open Design CLI

Open your terminal and run one of the following commands:

Option A: Quick install script (recommended)

# Windows (Git Bash / MSYS)
curl -fsSL https://open-design.ai/install.sh | sh -s hermes

Option B: Install via npm

npm install -g @opendesign/cli

Verify Installation

opendesign --version

If you see a version number, the installation was successful. If not, ensure npm global binaries are in your PATH.

Step 2: Configure Hermes to Use Open Design MCP

Hermes uses MCP to communicate with external tools. Add Open Design as an MCP provider in your config.yaml file.

Config location:

• Windows: ~/AppData/Local/hermes/config.yaml
• Linux/Mac: ~/.hermes/config.yaml

Add this snippet under the mcp key:

mcp:
  open-design:
    type: "local"
    command: ["opendesign-mcp"]

Save and close the file.

Step 3: Start the MCP Server

Open a new terminal window and run:

opendesign-mcp

Keep this terminal open. The MCP server must stay running for Hermes to connect. Default port is 7456.

Step 4: Validate the Integration

Test the connection in Hermes with a simple delegation task:

delegate_task(
  goal="Generate a simple design artifact using Open Design",
  toolsets=["skills", "terminal"]
)

Check Hermes logs for a successful MCP handshake. If Open Design returns a result, the integration is working.

Step 5: Start Using Open Design in Your Workflow

Once integrated, you can use Open Design from within Hermes for:

• Layout improvements — refine spacing, typography, and visual hierarchy
• Theme customization — delegate Blogger theme tweaks to Open Design
• Asset generation — create SVG icons, diagrams, and visual assets
• Multi-agent orchestration — combine Open Design with other MCP tools

Troubleshooting

Problem	Solution
opendesign-mcp not found	Ensure npm global bin is in PATH. Restart terminal and reinstall if needed.
Hermes can't connect to MCP	Verify the MCP server is running. Check port 7456 is not blocked. Confirm config.yaml syntax.
No output from Open Design	Make sure you're using the correct toolset (skills, terminal) in your delegate_task call.

Final Thoughts

Integrating Open Design with Hermes Agent unlocks design automation capabilities that can save time and improve your blog's visual quality. The setup process takes about 10 minutes and works across Windows, Linux, and macOS.

Next steps: Try delegating a sample design task via Hermes, then explore Open Design's skill library for Blogger theme optimization, AdSense-friendly layouts, and responsive design patterns.

This tutorial is part of the Prism Insights series — practical guides for creators and bloggers who use AI tools to build better websites.