Model Context Protocol standardized how agents reach tools. It was never designed to answer what an agent remembers once...

Model Context Protocol standardized how agents reach tools. It was never designed to answer what an agent remembers once the session ends — and that gap is where most "unreliable agent" complaints actually live.MCP has crossed roughly 97 million monthly SDK downloads as of March 2026. In December 2025, it was donated to the Agentic AI Foundation, a Linux Foundation project. Public directories now list more than 20,000 MCP servers, and a Zuplo survey of technical leaders found 72% expect MCP usage to keep growing. By any adoption metric, MCP won.So why does working with an agent still feel like working with someone who has no memory of yesterday? What MCP Actually SolvedGive credit first. Before MCP, every tool integration was a one-off: a custom adapter per tool, per framework, multiplied across every team building agents. MCP collapsed that into one protocol — one server per tool, any compliant client can talk to it. It's the same kind of standardization that made USB-C useful: not be...