Diffpane

diffpane

Real-time TUI diff viewer for AI coding agents.

Why

AI coding agents like [Claude Code](https://docs.anthropic.com/en/docs/claude-code), [Codex CLI](https://github.com/openai/codex), and [OpenCode](https://github.com/opencode-ai/opencode) change files fast, across multiple directories. Without a dedicated viewer, you're juggling `git diff` + lazygit + delta just to keep up, or trusting changes you haven't seen.

diffpane replaces that with one command. It sits next to your agent and auto-follows every change as it happens. Git is the single source of truth. What you see is what git sees.

Features

• Session baseline - See cumulative changes across your entire session. diffpane records your starting point and diffs everything against it. Press r to reset.
• Follow mode - Auto-jumps to the latest changed file and scrolls to the newest change. When you navigate manually, follow pauses until you resume it with f.
• Syntax highlighting - Added and removed lines are color-coded with background colors, so you can tell what changed at a glance. Adapts to dark and light terminals automatically.
• Zero config - Single binary, requires only git. Run diffpane in any git repo and it works.

Install

brew install Astro-Han/tap/diffpane

Or with Go:

go install github.com/Astro-Han/diffpane@latest

Pre-built binaries are also available on the [Releases](https://github.com/Astro-Han/diffpane/releases) page.

Usage

cd your-project
diffpane

Split your terminal. Left pane: your AI agent. Right pane: diffpane.

Keys

Key	Action
↑/↓	Scroll diff
←/→	Next/prev file
f	Toggle follow mode
r	Reset baseline to current HEAD
Tab	File list
q	Quit

Requirements

• macOS or Linux (amd64 or arm64)
• Git

Also by the Author

[**claude-pace**](https://github.com/Astro-Ha