MCP Coordinator: proxy for multiple MCP servers, exposing only 3 tools to Claude

Related to mcproxy:

https://github.com/team-attention/mcproxy

https://news.ycombinator.com/item?id=46549929

> When Claude needs to use an MCP, the Coordinator dynamically loads it, calls the tool, and returns just the result. This dramatically reduces context window consumption while maintaining full access to all MCP capabilities.