MCP (Model Context Protocol) is an open protocol that standardizes interactions between AI models and external tools/data sources. Simply put, it allows AI to use various external capabilities as if calling functions.
FocusMCP further refines this concept by introducing the Brick concept. A Brick is an atomic MCP module with a clear, single functional boundary. For example: shell for executing commands, echo for replying to messages, lastversion for checking software package versions.
The advantage of this design is on-demand combination—users only need to load the Bricks required for the current task, avoiding irrelevant tools from occupying the context window, thus improving efficiency while reducing security risks.