4-Pane iTerm2 Setup for Claude Code CLI Separates AI Roles
Problem and Solution
A developer using Claude Code CLI encountered two persistent issues: context drift where sessions become messy and lose thread after dozens of turns, and self-grading bias where a single model both implements and audits its own code, leading to silent failures.
The solution is a four-pane iTerm2 terminal arrangement with each pane dedicated to a specific role, built specifically for Claude Code.
Pane Configuration
- AUDIT (Opus, read-only): Adversarial review only, enforced so it can't write files
- IMPL (Sonnet): Implementation and running tests
- PROMPT: Prompt engineering and iteration, separate from code
- PLAN: Architecture discussions and documentation, zero file-writes
Technical Implementation
A cc alias in each pane launches Claude with the right model, effort level, and permissions automatically. The setup uses $ITERM_PROFILE (set natively by iTerm2) rather than a custom environment variable, so it survives crashes and window arrangement restores without extra ceremony.
The developer has published a free guide with complete implementation details including .zshrc snippets at pravindurgani.github.io/claude-code-multipane-iterm2/.
📖 Read the full source: r/ClaudeAI
👀 See Also
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Layered Defense Framework for Claude Code Rule Enforcement
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