Until recently, every piece of software was built with one kind of user in mind: a person sitting in front of a screen, clicking buttons and filling out forms. That is changing fast. Today, tools like Claude, ChatGPT, and Copilot can already open and use other programs on their own, following instructions someone gave them earlier. For that to work well, these AI assistants need a clear way to "talk" to each product. That way already has a name: Model Context Protocol, or simply MCP.
Here is the simple version: think of MCP as a standardized instruction manual that any AI assistant can read. Instead of every company inventing its own confusing way to connect with AI, MCP became a shared language. A product that offers this connection becomes available to use directly inside Claude, ChatGPT, or other assistants, without a person ever needing to open the website.
Why this stopped being just a big tech company thing
Growth over the past months has been fast: surveys show tens of millions of MCP related downloads every month, thousands of public connections already available, and close to half of software companies already using it in production in some form. Early adopters were development teams, using AI to review code, generate tests, and fix issues faster. But the use is spreading to other areas too, like support, sales, and everyday task automation.
The important part is that this is no longer exclusive to big companies with huge engineering teams. The tools for building this kind of connection are getting simpler, and even someone starting a product alone, or building something with AI help without deep coding knowledge, can already think about this from day one.
What actually changes for someone building a product
There is no need to rush and implement this tomorrow. But it is worth keeping in mind: if the question used to be "does my site work well on mobile", the question starting to matter now is "can an AI assistant understand and use my product on its own". Products with clear information, simple processes, and an organized structure behind them will handle this shift better, the same way they always handled every other technology change better.
That kind of organized foundation is exactly what makes adjustments like this easier down the road. CastorStack already ships with authentication, billing through Stripe and Paddle, and an organized codebase built in, leaving more time and headspace for whoever is building to think about things like this, instead of spending weeks solving the basics all over again.