MCP vs APIs, in plain English

Everybody's talking about MCP.

Almost none of the business owners I work with can tell me what it actually is. They nod along in meetings and hope nobody asks.

You can't blame them. Every explanation out there is written for developers. Clients, servers, endpoints, protocols. Ten minutes in and you're more confused than when you started.

The idea itself is simple. You just need the API bit first.

An API is how two apps talk to each other. When your accounts software pulls in your bank transactions, that's an API doing the work.

The catch is that every one of those connections gets built by hand, one at a time. If an AI tool needs to reach ten apps, somebody builds ten separate connections.

MCP ends that.

It stands for Model Context Protocol, and it's one shared standard. An app builds one MCP connection point, once. Any AI can then plug straight into it.

Think of it like a plug socket instead of ten different adaptors.

And MCP doesn't replace APIs. It sits in front of them, so your AI can use the tools you already pay for.

I run my own business this way. Claude connects to Airtable, Slack, Xero and my social scheduler, all through MCP. No developer involved, no custom code.

I can ask Claude to pull last month's numbers from Xero, or line up a week of posts in my scheduler, and it goes and does it inside those tools.

There is something special about sending AI off to do a real job in your own software, then coming back a few minutes later to find it finished.