@CartwrightApp built Cortex, a local MCP server: Claude plans, and a fast layer does the clicking. On the same Mac-app task they measured computer use at 23 seconds versus Cortex at 0.8 seconds, and one action from about a 5 second Claude round to 0.25 seconds with no model. They list 24 tools, including a browser, Mac apps, GitHub search, and a safety gate, say it was measured on their Mac, and tag @typesafeai and #JEV.

Cartwright (@CartwrightApp) published this on 2026-09-24. @CartwrightApp built Cortex, a local MCP server: Claude plans, and a fast layer does the clicking. On the same Mac-app task they measured computer use at 23 seconds versus Cortex at 0.8 seconds, and one action from about a 5 second Claude round to 0.25 seconds with no model. They list 24 tools, including a browser, Mac apps, GitHub search, and a safety gate, say it was measured on their Mac, and tag @typesafeai and #JEV. Built Cortex, a local MCP server: Claude plans, a fast layer does the clicking. How Jev or TypeSafe is used, in the post's own words: “@typesafeai #JEV” The post does not name a separate audience. It is for people reading what @CartwrightApp shows here (it uses #JEV; it includes media).