Agent Monitor Canvas

Displays real-time sub-agent activity with:

• Tabbed interface (one tab per agent)
• Scrollable output streams
• Tool call display with results
• Git diff visualization

Auto-Spawn Behavior

The monitor automatically spawns as soon as Claude Code dispatches any sub-agent using the Task tool. It uses Claude Code hooks to detect agent lifecycle events:

• PreToolUse hook: Detects when Task tool is invoked
• SubagentStop hook: Tracks when agents complete

Manual Usage