46.9% token reduction from dynamic MCP tool loading
Moving MCP tools into dynamic context—loading them only when invoked—reduced total tokens by 46.9% across sessions that used an MCP tool.
Supporting evidence
Improved token efficiency for longer agent runs · Cursor
Original excerpt
This reduced total tokens by 46.9% across sessions that called an MCP tool.
Context
That created an opportunity to improve efficiency by keeping tools available without including their full definitions in every request. We'd solved a similar problem earlier this year when we moved MCP tools into dynamic context, loading them only when needed.