MCP Solved Tool Access. Tool Selection Is Still Unsolved

I have been building agentic workflows for the better part of a year, and the same friction keeps coming back: my agents have access to too many tools and judgement about almost none of them. MCP fixed the access problem. It standardised how agents call tools, how clients connect, how servers describe themselves. That is real, and it has unlocked a wave of useful servers — browser automation, file systems, search, databases, you name it. But access is not selection. When I ask Claude Code to "bu