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Getting Started with ChatGPT

ChatGPT supports MCP servers through its connector feature. This guide shows you how to connect mittwald MCP to ChatGPT using OAuth authentication.

Prerequisites​

  • ChatGPT Plus, Team, Enterprise, or Education plan
  • Developer Mode enabled in ChatGPT settings
  • A mittwald account (to authenticate)
  • 5 minutes to complete setup

Step 1: Enable Developer Mode​

  1. Open ChatGPT
  2. Click your profile icon and select Settings
  3. Go to Apps & Connectors → Advanced settings
  4. Enable Developer Mode

Step 2: Create a Connector​

  1. In Settings, go to Connectors

  2. Click Create

  3. Fill in the connector details:

    FieldValue
    Connector namemittwald
    DescriptionManage mittwald hosting: projects, apps, databases, domains, and more
    Connector URLhttps://mcp.mittwald.de/mcp

  4. Click Create to save

ChatGPT validates the endpoint and displays the available tools from mittwald MCP.

Step 3: Authenticate​

When you first use the connector in a chat:

  1. ChatGPT prompts you to authorize the connection
  2. A browser window opens for mittwald authorization
  3. Sign in with your mittwald account
  4. Review the requested permissions
  5. Click Authorize

Step 4: Verify Your Connection​

  1. Start a new chat in ChatGPT
  2. Click + next to the message input
  3. Select More and choose the mittwald connector
  4. Test the connection:
List my mittwald projects

You should see a list of your mittwald projects.

✅ Success! mittwald MCP is now connected to ChatGPT.

Tool Confirmation​

ChatGPT asks for confirmation before executing write operations (creating resources, updating settings, etc.). You can:

  • Approve once: Confirm the specific action
  • Remember approval: Skip confirmation for similar actions in the future

Read-only operations like listing projects run without confirmation prompts.

Common Tasks with mittwald MCP​

Once authenticated, you can use prompts like these:

List Your Projects​

Show all my mittwald projects

Get App Information​

Show apps in my project [project-id]

Database Details​

Get database connection info for [db-id]

Backup Status​

Check backup schedules for project [project-id]

Support Tickets​

List open support conversations for my account

Troubleshooting​

Error: "Developer Mode Not Available"​

Symptom: Developer Mode toggle does not appear in settings.

Cause: Your ChatGPT plan does not include this feature.

Fix:

  1. Upgrade to ChatGPT Plus, Team, Enterprise, or Education
  2. Wait for feature rollout if you recently upgraded

Error: "Connector Validation Failed"​

Symptom: ChatGPT cannot validate the MCP endpoint.

Cause: Network issues or incorrect URL.

Fix:

  1. Confirm the URL is exactly https://mcp.mittwald.de/mcp
  2. Check your network connection
  3. Try creating the connector again

Error: "Authentication Failed"​

Symptom: OAuth flow fails or times out.

Cause: Browser popup blocked or session expired.

Fix:

  1. Allow popups for chat.openai.com in your browser
  2. Clear browser cookies for mittwald.de
  3. Try again from a different browser

Error: "Tool Not Found"​

Symptom: ChatGPT cannot find mittwald tools.

Cause: Connector metadata is stale.

Fix:

  1. Go to Settings → Connectors
  2. Find the mittwald connector
  3. Click Refresh to update the tool list

Error: "Permission Denied"​

Symptom: Operations fail with authorization errors.

Cause: OAuth tokens expired or permissions changed.

Fix:

  1. Delete the connector in Settings
  2. Create it again and re-authenticate

Refresh Tool Metadata​

If mittwald adds new MCP tools:

  1. Go to Settings → Connectors
  2. Find the mittwald connector
  3. Click Refresh

ChatGPT fetches the updated tool list from the MCP server.

FAQ​

Q: Which ChatGPT plans support MCP connectors?​

A: ChatGPT Plus, Team, Enterprise, and Education plans support connectors with Developer Mode.

Q: Does this work on mobile?​

A: Yes. Connectors work on ChatGPT web and mobile apps.

Q: Is my authentication secure?​

A: Yes. ChatGPT uses OAuth for connector authentication. Tokens are stored securely by OpenAI.

Q: Can I use multiple MCP connectors?​

A: Yes. You can add multiple connectors and use them in the same conversation.

Q: How do I remove the connector?​

A: Go to Settings → Connectors, find the mittwald connector, and delete it.

Q: Why does ChatGPT ask for confirmation?​

A: Write operations require approval to prevent accidental changes. You can choose to remember approvals for specific action types.

Next Steps​

Official Documentation​

This guide is based on official OpenAI documentation: