Introduced by Anthropic and now widely adopted, MCP is a common "plug" through which an agent can call tools and read data sources — calendars, databases, search, business systems — without bespoke integration for each one.
It matters because it is part of how agents move from talking to doing. As more services expose MCP connections, agents can take real actions on a user's behalf, making the agentic web less of a forecast and more of an infrastructure.
Through MCP, an assistant can check a live availability feed and book an appointment directly, instead of just telling the user to visit a website.
Why this matters for AI findability
MCP signals where discovery is heading — toward agents that act, not just answer. Understanding it helps you anticipate how being found by AI will increasingly mean being usable by AI.