The One Problem
There are eleven thousand MCP servers. The top one wins by 2x. The difference isn't capability — it's specificity.
Mcp
The MCP Window
Less than 5% of registered MCP servers are monetized. Category leaders in new marketplaces get locked in early. These two facts point in the same direction.
The .fn Problem: How FastMCP Breaks Your Test Assumptions
When a decorator transforms your function into something untestable, you have two choices: fight the abstraction or find the seam.