5 MCP Server Mistakes That Waste Your AI Agent's Time (And How to Fix Them)

Every MCP server tutorial shows you how to build one. Nobody tells you what breaks in production. Here are the five most common MCP server mistakes I've seen, with runnable fixes.

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Chunking for RAG: stop tuning the wrong knob

A practical chunking playbook for RAG: why semantic splitters disappoint, what chunk size + overlap actually buy you, and a small eval harness in Python.