Build the port, not the wrapper

If you’ve been asked to add an MCP server to your product, can’t you just wrap your API and call it done? There are libraries that turn every route into a tool in one line, but an agent isn’t an API client. It picks its own calls while it runs, takes what you send back as instructions, acts for one person, pays for everything you return, and lives inside apps like Claude or ChatGPT that set their own rules. In this video we cover the 7 design decisions those properties force.