MCP endpoint to expose all proxied MCP

[technicalpickles]

Anthropics mentioned this awhile back: Introducing advanced tool use on the Claude Developer Platform

Instead of loading all tool definitions upfront, the Tool Search Tool discovers tools on-demand. Claude only sees the tools it actually needs for the current task.

This covers one of the main features of mcpproxy:

Save tokens & accelerate responses – Agents load just one retrieve_tools function instead of hundreds of schemas. Research shows ~99 % token reduction with 43 % accuracy improvement.

I think there's tons of other value for other things it does, like docker sandboxing, centralized auth, single point of management, etc.

I'm not sure where claude-code is in adopting that, but I'd like to be a) ready for it and b) be able to use the MCP servers + tools mcpproxy is configuring directly without having to search and then call it.