[Feature Request]: Agent model-context-protocol support

[dmi3coder]

Feature Description

MCP is an open protocol that standardizes how applications provide context to LLMs. Would be good to make llama_index support MCP integration(e.g for agents)

https://www.anthropic.com/news/model-context-protocol
https://modelcontextprotocol.io/
https://github.com/punkpeye/awesome-mcp-servers?tab=readme-ov-file

Reason

instead of manually defining tools that agents can use, we could make MCP provider that will be linked to locally installed MCPs

Value of Feature

Better integration with latest tools, extension of coverage of support.

[logan-markewich]

If you can show me an example where one script/process launches an mcp server, and another script/process uses a client to interact with that server, I'll make the integration

Spent a few hours when MCP launched and couldn't figure it out . Their docs had the server and client launching in the same script...