Connecting ChatGPT to your brand guidelines

The ChatGPT MCP integration allows you to connect your Guidelines brand data directly to OpenAI's ChatGPT using the Model Context Protocol. This enables ChatGPT to access and work with your brand colors, fonts, typography styles, and guidelines in real-time.

Note: Custom MCP servers need a paid ChatGPT plan. View ChatGPT pricing. On Business and Enterprise workspaces, an admin may need to allow custom plugins first.

To connect ChatGPT to your brand guidelines:

1. Access the integration in Guidelines

• Navigate to your brand dashboard in Guidelines
• Click on Integrations in the sidebar
• Find ChatGPT in the AI Tools section
• Click to open the integration setup guide

2. Add Guidelines as a custom MCP server in ChatGPT

• In ChatGPT, open Settings → Plugins and click Browse directory, or go straight to chatgpt.com/plugins
• Click Add, then Add custom MCP server
• Fill in the server details:
  • Icon: Download the Guidelines icon from the integration page and upload it
  • Name: Guidelines
  • Description: Find and access details of your brand in Guidelines
  • Connection: Server URL, https://mcp.guidelines.site/mcp
  • Authentication: OAuth
• Leave Advanced OAuth settings as ChatGPT discovers them. There's no client ID or secret to enter.
• Tick I understand and want to continue, then click Create as a plugin

3. Sign in to Guidelines

• ChatGPT asks you to sign in. Sign in with your Guidelines account and approve access.
• Our MCP reads data from your brands, and does not have write access

4. Use Guidelines in a chat

• Start a new chat, click the + button, and pick Guidelines under Plugins

5. Start using your brand system

Once connected, you can ask ChatGPT questions about your brand and use your brand assets in AI-generated content. Try these example prompts:

• "What brands do I have access to?"
• "What are the primary colors for [your brand name]?"
• "Show me the typography styles for our brand"
• "Create a new landing page using our brand guidelines"
• "Generate CSS variables for our brand colors"
• "What fonts should I use for headings?"

Available tools and data

The Guidelines MCP server provides ChatGPT with the following tools:

Brand Tools

• list_brands - Lists all brands accessible to you, grouped by organization
• get_brand - Get detailed information about a specific brand including logos and colors with their groups, fonts, typography styles, and available Guides
• search_brands - Search for brands by name or organization name

Guidelines Tools

• search_guidelines - List or search Guides by name
• get_guidelines - Get all page resources for a specific Guide
• get_guidelines_page - Get a single Guide page as markdown, for clients that don't support resources

Resources

ChatGPT can also list and read individual Guide pages as resources:

• URI Pattern: guidelines://{domain}/{slug}
• Format: Markdown content from your Guide pages
• Access: List all pages and read specific page content

Troubleshooting

If you encounter issues connecting:

1. Ensure you have a paid ChatGPT plan, and on Business or Enterprise that your admin allows custom plugins
2. Verify you're signed into Guidelines with an account that has access to the brand
3. Check that your Guidelines subscription is active
4. If you added Guidelines before October 7, 2026, remove the old Guidelines plugin in Settings → Plugins, then add it again with the steps above

For additional support, contact our team at support@guidelines.site