gptel can use MCP server tools in Emacs by integrating with the mcp.el package, here's a demo: https://i.imgur.com/WTuhPuk.mp4.
mcp.el: https://github.com/lizqwerscott/mcp.el
Relevant gptel README section (you'll have to unfold the details block): https://github.com/karthink/gptel?tab=readme-ov-file#model-c...