Claude Esp

claude-esp

[](https://pkg.go.dev/github.com/phiat/claude-esp)

Stream Claude Code's hidden output (thinking, tool calls, subagents) to a separate terminal in real-time.

Looking for the Rust port? See: [claude-esp-rs](https://github.com/phiat/claude-esp-rs)

The Problem

When using Claude Code interactively, tool outputs and thinking are collapsed by default and require pressing `Ctrl+O` to toggle visibility. This tool lets you watch all that output in a **separate terminal** with a nice TUI, without interrupting your main Claude Code session.

Features

• Multi-session support - Watch all active Claude sessions simultaneously
• Hierarchical tree view - Sessions with nested Main/Agent nodes
• Real-time streaming - See thinking, tool calls, and outputs as they happen
• Subagent tracking - Automatically discovers and displays subagent activity
• Background task visibility - See background tasks (⏳/✓) under spawning agent
• Filtering - Toggle visibility of thinking, tools, outputs per session/agent
• Auto-scroll - Follows new output, or scroll freely through history

Requirements

• Go 1.23 or later

Installation

# Install directly via go install
go install github.com/phiat/claude-esp@latest

# Or clone and build from source
git clone https://github.com/phiat/claude-esp.git
cd claude-esp
go build -o claude-esp .

# Optional: install to PATH
cp claude-esp ~/.local/bin/

Pre-built binaries

Download pre-built binaries from the [Releases](https://github.com/phiat/claude-esp/releases) page. Available for Linux (amd64, arm64), macOS (amd64, arm64), and Windows (amd64).

Usage

# In your main terminal: run Claude Code as normal
claude

# In a second terminal/tmux pane: run the watcher
claude-esp

Options

Option	Description
-s	Watch a specific session by ID

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