James' Growth Diary

May 16, 2026 · Artificial Intelligence

MCP Integration Deep Dive: Prompt Cache Stability and Tool Ordering Explained

The article analyzes why connecting an MCP server can triple response latency and token usage, explains how unstable tool ordering breaks Anthropic's prompt cache, and provides detailed code walkthroughs, design insights, common pitfalls, and concrete best‑practice recommendations for building reliable MCP integrations.