The fair’s MCP server connects ChatGPT to your stored planning data. The MarCom Mediaplanung plugin adds instructions for setup and the guided media planning workflow. It is provided centrally for your workspace; you only add it.
What you need
- Access to the Messe Düsseldorf ChatGPT workspace.
- An invited Media Assistent account. Use the email address named in your invitation.
- Permission to use plugins. Ask your workspace administrator if access is missing.
Add the plugin
- Open the Plugins menu in ChatGPT.
- Switch to the Messe Düsseldorf tab. It lists the plugins your company provides.
- Open MarCom Mediaplanung and add it. Connect your invited account when prompted.
- Start a new conversation and select the plugin with
@. You can use Work for the guided planning workflow.
If the tab or the plugin is missing, ask your administrator to give you access. You do not need your own copy of the plugin files.
Sign in to the MCP server
The connection is called messe-media and uses OAuth. Follow its sign-in window. Enter the code sent by email only on the sign-in page. You do not need an API key.
In the ChatGPT desktop app, a pending sign-in can be started under Settings → MCP servers → From plugins → messe-media → Authenticate.
Installation and authentication are separate steps. A successful data lookup confirms that your account can access the fair’s data.
Verify the connection
Ask for a read-only lookup:
Check the connection to the fair’s MCP server and show me the available fairs and editions. Do not create any data.
After a successful lookup, continue with First steps. A successful lookup with no fairs means none have been set up yet. An authorization error needs the responsible administrator’s attention.
Add the MCP server directly
If your workspace uses manual connections, you can add the server yourself. The MarCom Mediaplanung plugin also contains planning instructions, making it the recommended starting point.
| Setting | Value |
|---|---|
| Name | messe-media |
| Server URL | https://messe.vilow.tech/mcp |
| Authentication | OAuth |
| Transport, if requested | Streamable HTTP |
In ChatGPT Plugins, use the plus button and Add custom MCP server. Enter the name and server URL, and choose OAuth. Review the requested access and select Create as a plugin. Install the resulting entry, sign in, and run the read-only connection check.
The server URL is a connection address. It is not the dashboard or a sign-in page.
Download the planning skill
The skill holds the instructions the assistant follows to guide media planning. The MarCom Mediaplanung plugin already includes it. Download it only if you connected the MCP server directly or want to read the instructions.
Download the current skill (ZIP)
The ZIP file contains the folder messe-medienplanung with its SKILL.md. The link always serves the latest published version. Add the file wherever your ChatGPT workspace allows custom skills, then start a new conversation.
Troubleshooting
| Problem | Next step |
|---|---|
| Plugin is missing | Check the Messe Düsseldorf tab; otherwise ask about plugin access. |
| No sign-in email | Check your invited address and spam folder; contact the administrator if needed. |
| Authentication expired | Authenticate the existing connection again. |
| Signed in but access denied | Share the actual error with the team so they can check your invitation and account permissions. |
| Server unreachable | Report the error to the support team. Reinstalling does not resolve a server outage. |
See official OpenAI documentation for plugins, MCP connections, and adding custom MCP servers. Checked on 7 November 2026; labels can differ by surface and workspace.