Model Context Protocol (MCP) is quietly becoming the plumbing that lets AI assistants like Claude actually do things, not just talk about them.
Connecting an AI assistant to a tool used to mean a custom integration per tool, built and maintained separately for each connection.
MCP standardizes how an AI assistant discovers and calls a tool's capabilities, so a new integration doesn't mean starting from scratch.
In practice, it's the difference between describing what you want and having someone build a one-off connector, versus an AI assistant that can just ask for it directly.
A concrete before/after
Before: connecting an AI assistant to your CRM meant a bespoke API integration someone had to build, test, and maintain, with its own authentication, its own error handling, its own drift whenever the CRM's API changed. With MCP: the assistant discovers the CRM's available actions on the fly and calls them directly, using the same protocol it uses for every other connected tool -- no custom glue code required per connection.
Why this matters beyond convenience
It changes what an AI assistant fundamentally is inside your workflow -- from something you copy text into and out of, to something that can actually complete a task inside the tools you already use. That's a difference in kind, not just speed.
Where this is headed
Expect MCP support to become table stakes the way a REST API once did. Tools without any form of it will start to feel noticeably behind -- not broken, just harder to actually use alongside an AI assistant that everything else already talks to natively.
It's still early, but the direction is clear: fewer bespoke integrations, more AI assistants that can genuinely act on your tools instead of only reasoning about them.