performance-monitor

Monitor system performance during Claude Code operations

Event Configuration

• Event Type: PostToolUse
• Tool Matcher: *
• Category: performance

Environment Variables

None required

Requirements

None

Script

tool_name=$(jq -r '.tool_name // "unknown"')
log_file=".claude/performance.log"
mkdir -p "$(dirname "$log_file")"
timestamp=$(date '+%Y-%m-%d %H:%M:%S')
if [[ "$OSTYPE" == "darwin"* ]]; then
  mem_usage=$(vm_stat | awk '/Pages active/ {print $3}' | sed 's/\.//')
else
  mem_usage=$(free -m | awk '/Mem:/ {print $3}')
fi
echo "[$timestamp] Tool: $tool_name, Memory: ${mem_usage}MB" >> "$log_file"