Vercel's New Coding Agent Takes Away Your MCP Tool List. It Sends the Same 15 Schemas.

Author(s): Chew Loong Nian – AI ENGINEER Originally published on Towards AI. fx declares seventeen built-in tools, and a full turn with a subagent host carries fifteen function schemas. I measured a stock four-server MCP setup at 37 tools and 22,226 bytes — the exact payload this design keeps out of the request. Every few weeks I go through the same small humiliation. I add an MCP server to a coding agent because it looks useful, then I add a second one, then a third, and somewhere around the fo

Original reporting by Towards AI · Chew Loong Nian - AI ENGINEER. GridIndex is an aggregation and intelligence layer — full credit to the original publisher.