Jonáš SvětlíkMCP: connect AI to your own tools
Chatting to an AI about your data is nice. Far more useful is an AI that can fetch it itself from your calendar, your drive or your database. That is exactly what MCP is for.
What MCP is, simply
MCP (the Model Context Protocol) is a shared connector between AI and your tools. Something like USB-C. Every tool used to solve AI integration its own way; now it just has to speak MCP and you can plug it into anything that supports it.
In practice: through MCP the AI can reach into your calendar, a document folder, your shop or your database. Nobody has to pre-chew it into a prompt - the AI asks for the data itself when it needs it.
What it actually gets you
- "How much did I invoice in July and to whom?" without opening your accounts.
- "Find the notice periods in my supplier contracts." over a real folder of documents.
- "Prepare a brief for Thursday's meeting." from your calendar and your old notes.
When MCP and when automation instead
This is the most important paragraph in the lesson. MCP is good when you are the one asking. It is interactive work with data, with a person present. An n8n automation is better when nobody is asking and the thing has to run by itself every day at seven in the morning. See automation course.
Plenty of people try to bend it all into one. Use both: an agent with MCP for questions, an automation for the routine.
How to set it up
The process is always the same: pick an MCP server for the tool you want to connect (there are ready-made ones for drives, calendars, databases, Git and plenty of services), set up the credentials and enable it in your AI client. Then you tell the AI what to do and it picks which tool to use.
Security, and this is not where you cut corners
- Grant read-only access until you genuinely need write access. The difference between "read my calendar" and "edit my calendar" is a big one.
- Every tool gets its own key, not one shared across everything. If one leaks, you only revoke that one.
- Only connect servers you understand or whose origin you know. An MCP server is a program with access to your data.
- Handle sensitive company data the same way as in the lesson GDPR and company data in AI.
Where to start
Do not start with your accounts. Connect a document folder or a calendar first, live with it for a week, and only then add something where damage is possible.
MCP does not make AI smarter. It makes it informed. That is usually exactly the difference you were missing.
Want AI that can see into your systems?
I will build you an assistant wired into your data and your tools, with permissions set so you can sleep at night. Tell me what systems you run.