If you've heard the term "MCP server" floating around AI Twitter, GitHub, or Discord and quietly googled it — you're not alone. As of mid-2026, even some frontier models don't fully recognize the term yet. Let's fix that. This is a plain-English explainer: what MCP is, what an MCP server does, and why it matters if you're building anything with AI agents. The 30-Second Version MCP stands for Model Context Protocol . It's an open standard (introduced by Anthropic in late 202...