Comment by suninsight

I also did not get it, but now I get it a bit, I think.

Look at it this way. You have to get some work done - maybe book a flight ticket. So you go to two sites - first you go to flight fare comparison, then you book the ticket on the airline website. And you have to do it in code.

There are two ways you can do it.

First Way 1. Understand the API of the flight comparison portal. 2. Understand the API for the airline website. 3. Write code which combines both these API and does the task.

Second Way 1. Message a coder friend who knows the API of the flight comparison portal and ask him to write code to get the cheapest flight. 2. Message another coder friend who knows the API of the airline portal and ask him to book a flight.

Both ways are possible, but which one do you think is Less Work ? Which one is 'cognitively' easier ? Which one can you do while driving a car with one hand ?

It should be clear that the second way is easier. Not only is the second way easier, but if the task requires multiple providers and a lot of context, it might be the only way possible.

The first way is analogous to LLM's doing API calls. The second way is analogous to LLM's doing MCP Servers. MCP servers reduce the cognitive cost to do a task to the LLM - which dramatically increases their power.