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Frank Welsch-LehmannJun 10, 2025 11:45:28 AM2 min read

Connector vs MCP - what you should know about the integration of AI in HubSpot

 

Introduction: What's behind the hype about AI integration in HubSpot?

HubSpot is at the heart of my customers' sales and marketing processes. But with the advent of generative AI, the rules of the game are expanding: Why search for information manually when an AI assistant can pull it directly from HubSpot? This is exactly where connectors and the Model Context Protocol (MCP) come into play. Two different ways to deeply integrate AI into your HubSpot usage. But which one suits your setup better?

What are connectors?

Connectors are ready-made interfaces between ChatGPT and tools such as HubSpot, Google Drive or OneDrive. They allow ChatGPT to retrieve information from these applications in real time. They only access data for which you have regular authorization. In concrete terms, this means that you can ask ChatGPT "What is the current status of lead X in HubSpot?" and receive an answer with a source.

Important: Connectors are currently restricted to read-only access. ChatGPT can therefore retrieve and analyze information, but cannot write or change data in HubSpot.

What is the Model Context Protocol (MCP)?

MCP is an open standard developed by Anthropic to connect AI models to almost any external data source. Think of it like a universal adapter: Instead of building a special interface for each tool, your AI simply speaks "MCP" - and a corresponding MCP server takes care of the connection to the data source.

With MCP, you can not only read, but also execute actions: Create tickets, update contacts, trigger workflows. HubSpot can also be connected via MCP, especially when complex or individual processes are involved.

Direct comparison: Connector vs. MCP

Criterion Connector MCP
Simplicity Plug & play in ChatGPT One-time IT setup required
Data access Read only Read & write
Customizability Limited to OpenAI offerings Completely flexible, also for own systems
Security Trust in OpenAI required Full control, self-hosting possible
Area of application Standard SaaS such as HubSpot, Drive Also for special or legacy systems

 

When is what useful?

  • Connector: If you work with standard use cases and need results quickly.
  • MCP: If you want to automate complex HubSpot workflows or integrate company-specific tools.
  • Hybrid: The clever combination: Connector for day-to-day business, MCP for strategic projects.

 

How does Breeze from HubSpot fit into the picture?

Breeze is HubSpot's own AI assistant. It uses HubSpot data exclusively and remains within the cosmos. This makes it strong when it comes to in-depth CRM understanding. But: Breeze cannot (yet) access external data sources and is functionally limited compared to ChatGPT plus Connector or MCP. So if you want to link HubSpot with other tools, there's no getting around Connector or MCP.

 

Conclusion: Your next step towards smart AI integration

Connectors offer you a quick, uncomplicated introduction to the world of AI-supported HubSpot use. MCP, on the other hand, is your tool for long-term independence and in-depth process integration. Both technologies have their place - and when combined, they unfold their full potential.

 

And now?

Which HubSpot data would be particularly helpful for your AI? Are there any internal systems you would like to connect? Think about it and start with a pilot project. Because you can only learn if you start.

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Frank Welsch-Lehmann
"You know what my most beautiful moment was? When Bodo, a sales manager, sent me a message after three months: 'Frank, I have to confess something - for the first time in years, I'm no longer struggling to get my team to use our software. They're opening HubSpot on their own now!' That's exactly the moment I live for. When skeptical looks turn into genuine enthusiasm. When sales staff open their CRM first thing in the morning - not because they have to, but because they want to. My recipe for success? I transform complicated software into a tool that your team misses when they can't use it. No theoretical concepts, but solid strategies that I've successfully established in over 200 companies. Because let's be honest: What good is the best software if your team ignores it?"

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