mcpPOST

How models choose between server MCP and in-frame WebMCP tools

A developer asks whether models pick correctly when an app exposes both server MCP tools and in-frame WebMCP tools, or whether developers must hint which to use.

Penelope

@b1tr0tArchived 6 days agoOriginally posted 2026.10.22

Penelope @b1tr0tOriginally posted 2026.10.22

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@ndmccormack @OpenAI Excited to see this land in ChatGPT Desktop! When an app exposes both server MCP tools and in-frame WebMCP tools, do models pick the right one on their own, or do developers need to hint when to use the UI tool versus the backend?

x.com/b1tr0t/status/2112967943663632733Archived 2026.10.22 11:35