Migrate from Cursor / Copilot / Roo-Cline

Cortex is a thin IDE layer on OpenCode. Keep your editor; bring the rules and habits you already have.

From Cursor

  • Keep .cursor/rules and project skills — Policy Brain loads them alongside .cortex/rules.
  • Install Cortex Agent in VS Code (or your fork) and connect your OpenCode account (no Cortex signup).
  • Replace Cursor subscription billing with OpenCode (or BYOK unlocks under Models).
  • Use Plan/Build + Auto routing instead of Cursor Agent mode; ghost-text and Inline Edit cover the editor surface.

From GitHub Copilot

  • Cortex chat and autocomplete use OpenCode models — not Copilot Chat.
  • Install Cortex, paste your OpenCode API key once, and keep Copilot installed only if you still want its separate completions.
  • Bring team conventions via .cortex/rules or user rules (Command Palette → Edit user rules).

From Roo / Cline / Zoo Code

  • Uninstall the Roo/Cline/Zoo fork extension if you no longer need its in-process agent or gateway.
  • Cortex does not use a token gateway or Docker by default — OpenCode runs locally with your subscription.
  • Map Roo/Cline modes to Cortex Plan/Build and OpenCode custom agents; reuse markdown rules under .cortex/rules.