Connect the KlickTipp MCP server

The KlickTipp MCP server exposes newsletters, contacts, tags, custom fields, opt-in processes, and other supported KlickTipp capabilities as tools for compatible MCP clients. It is the connection layer used both by direct MCP connections and by the KlickTipp plugin for Claude and Codex. The plugin additionally includes KlickTipp skills that guide the assistant in choosing and using these tools correctly.

The KlickTipp MCP server is available at:

https://mcp.klicktipp.com/mcp

The server uses OAuth for authentication. You do not need an API key, a local server executable, or a .env file.

This article covers the server itself: connecting to it directly with any MCP-capable client, what it can currently do, and its safety behavior. If you want the packaged experience for Claude or Codex — with skills included — see Install the KlickTipp plugin for Claude and Codex instead.

• A KlickTipp Premium, Deluxe, or Enterprise subscription with access to the MCP server.
• Permission to sign in to the KlickTipp account you want to use.
• A client that supports remote MCP servers and OAuth 2.0.
  • Claude: A Claude account in which custom Connectors are available and permission to install custom Connectors. Claude Pro license requiered.
  • ChatGPT: A ChatGPT account in which Plugins are available and permission to install plugins. ChatGPT Plus license for personal use with Codex, or ChatGPT Business license for managed workspace use with Codex and the Cloud Application requiered.
  • Client-specific account and administrator requirements are explained below.

Note: If you're thinking about using KlickTipp and just want an overview of the features our MCP server offers, we provided an overview of all currently available tools in this documentation.

This creates a direct MCP connection without the KlickTipp skills. If your client supports the full plugin, we recommend installing the KlickTipp plugin for Claude and Codex instead.

This section describes the direct MCP-only connection for personal Claude accounts. This includes adding a custom remote connector.

1. Open Customize > Connectors.
2. Select Add, then Add custom connector.
3. Enter KlickTipp as the connector name.
4. Enter the following server URL:

  https://mcp.klicktipp.com/mcp

5. Continue with the OAuth settings detected by Claude.
6. Select Add.
7. Select Connect and sign in to your KlickTipp account.

This creates a direct MCP connection without the KlickTipp skills. Use it only if you intentionally want the raw MCP server or cannot use the KlickTipp plugin.

If you already use Claude Code:

1. Start a new Claude Code session.
2. Send the installation prompt provided below.

   Please connect the KlickTipp MCP server:
   https://mcp.klicktipp.com/mcp

   Use OAuth authentication, guide me through the KlickTipp sign-in, and verify that the KlickTipp tools are available after the connection is complete.

6. Log in with your KlickTipp username and password if you aren't already logged in.
7. Review the access request, select → Allow, and then return to ChatGPT.
8. Open a new chat before using the MCP Server.

If you have a personal ChatGPT account, use Codex in the ChatGPT desktop app:

1. Download the ChatGPT desktop app.
2. Open the app and sign in with your ChatGPT account.
3. Select Codex.
4. Start a new local chat.
5. Send the installation prompt provided below:

   Please connect the KlickTipp MCP server:
   https://mcp.klicktipp.com/mcp

   Use OAuth authentication, guide me through the KlickTipp sign-in, and verify that the KlickTipp tools are available after the connection is complete.

6. Log in with your KlickTipp username and password if you aren't already logged in.
7. Review the access request, select → Allow, and then return to ChatGPT.
8. Open a new chat before using the MCP Server.

You do not need to use the terminal or install the Codex CLI.

Full MCP support in ChatGPT is available for Business, Enterprise, and Education workspaces. An administrator, owner, or appropriately authorized role must configure and publish the KlickTipp MCP server as a custom app.

1. Enable Developer Mode for the authorized account.
2. Open Workspace settings > Apps > Create.
3. Enter the KlickTipp MCP server endpoint:

  https://mcp.klicktipp.com/mcp

4. Select OAuth as the authentication method.
5. Select Scan tools and complete the KlickTipp sign-in when prompted.
6. Review the detected tools and select Create.
7. Open the new draft under Workspace settings > Apps > Drafts.
8. Review its actions, permissions, and workspace access.
9. Publish the app for the intended members or roles.

After publication, each member enables the KlickTipp app and connects their own KlickTipp account under Settings > Apps.

LangDock supports up to 60 tools per MCP integration. Because the main KlickTipp MCP server exposes more tools, connect the domain-specific servers you need as separate integrations.

1. Open Integrations in LangDock and select Add integration.
2. Select the option to connect a remote MCP server.
3. Enter one of the domain-specific KlickTipp MCP server URLs.
4. Select OAuth 2.0 (Dynamic Client Registration) as the authentication method.
5. Select Add connection and complete the KlickTipp sign-in.
6. Test the connection, select the available tools, and save the integration.
7. Repeat these steps for every additional KlickTipp server you need.

See Advanced: Use domain-specific servers for the available server URLs and their functional areas.

Before authentication, the server can respond with 401 Unauthorized, the tool list may be empty, and tool calls can fail with an authentication error. This is the expected state before OAuth login, not an indication that the endpoint is incorrectly configured.

Repeat the connection process if the login was interrupted or not approved.

The documented tool catalog is available in the KlickTipp MCP Server Tool Reference. After connecting, the tool list returned by the server is authoritative for the tools currently available to your account and client.

For most users, the main KlickTipp MCP server is the recommended and simplest option:

https://mcp.klicktipp.com/mcp

Some MCP clients or integration providers limit the number of tools they can load from a single server. In this case, you can connect one or more domain-specific KlickTipp servers instead.

You can also use the individual servers if you intentionally want to expose only selected functional areas to your MCP client.

All endpoints use the base URL https://mcp.klicktipp.com and KlickTipp-managed OAuth 2.0 authentication.

Each individual server must be added to your MCP client as a separate integration. Complete the OAuth sign-in for every server you add. All servers use the same KlickTipp login and authorization scope.

Working with email content

To edit emails for newsletters, follow-up campaigns, or automations, also connect the email-editor and email-content servers.

MCP tools operate in the KlickTipp account connected through OAuth. Read-only operations may run without a confirmation prompt. Confirmation behavior for write operations depends on the individual tool and the MCP client.

1. A real newsletter dispatch always requires separate human confirmation inside KlickTipp.
2. Some irreversible operations are available through MCP, including deleting tags, custom fields, or opt-in processes.
3. Some actions that change subscription states or can trigger automations require an explicit approval input.
4. Other write operations rely on the client’s confirmation behavior and the warnings in the tool description.

Always review the connected account, affected objects, and tool warnings before approving a write operation.

The OAuth login has not completed for this MCP connection.

• In Claude, open Customize > Connectors, select KlickTipp, and repeat the connection process.
• In a managed ChatGPT workspace, open Settings > Apps, select KlickTipp, and reconnect your account.
• In Claude Code or Codex, start a new session and send:

Please reconnect the KlickTipp MCP server:
https://mcp.klicktipp.com/mcp

Restart the OAuth sign-in and verify that the KlickTipp tools are available after authentication.

If authentication still fails, confirm that you are signing in to the intended KlickTipp account and that the account includes MCP access.

This can mean that the client is using an outdated tool list, that the tool name has changed, or that the tool is not available in the current production rollout.

Start a new session and ask the client to refresh the KlickTipp MCP tools. Then check the KlickTipp MCP Server Tool Reference. If the tool is still missing, do not assume that it is available for the connected account.

Confirm that you authenticated with the intended KlickTipp account and that it has permission to access the requested account or sub-account.

• MCP Server Tools
• Official KlickTipp agent plugin repository
• Install the KlickTipp plugin for Claude and Codex
• Landing Page: Control KlickTipp with your AI agent simply by voice
• Knowledge Base: Control KlickTipp with AI: MCP for Claude, ChatGPT, and Others