MCP Explained
Summary
The article explains MCP (Model Context Protocol) and its message flow, noting that some details are harness-level and not part of the MCP standard. It references the 2025-11-25 MCP spec and token-count guidance, and credits Runlayer as the authoring/operating layer for AI. It serves as a concise primer for developers evaluating MCP as a protocol for LLM tooling.