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pixelheros/.claude/hooks/log-agent-stop.sh
2026-05-15 14:52:29 +08:00

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#!/bin/bash
# Claude Code SubagentStop hook: Log agent completion for audit trail
# Tracks when agents finish and their outcome
#
# Input schema (SubagentStop) — per Claude Code hooks reference:
# { "session_id": "...", "agent_id": "agent-abc123", "agent_type": "Explore",
# "agent_transcript_path": "...", "last_assistant_message": "...", ... }
#
# The agent name is in `agent_type`, NOT `agent_name`. Reading `.agent_name`
# returns null on every invocation, so the fallback "unknown" is always used
# and the audit trail captures nothing useful.
INPUT=$(cat)
# Parse agent name -- use jq if available, fall back to grep
if command -v jq >/dev/null 2>&1; then
AGENT_NAME=$(echo "$INPUT" | jq -r '.agent_type // "unknown"' 2>/dev/null)
else
AGENT_NAME=$(echo "$INPUT" | grep -oE '"agent_type"[[:space:]]*:[[:space:]]*"[^"]*"' | sed 's/"agent_type"[[:space:]]*:[[:space:]]*"//;s/"$//')
[ -z "$AGENT_NAME" ] && AGENT_NAME="unknown"
fi
TIMESTAMP=$(date +%Y%m%d_%H%M%S)
SESSION_LOG_DIR="production/session-logs"
mkdir -p "$SESSION_LOG_DIR" 2>/dev/null
echo "$TIMESTAMP | Agent completed: $AGENT_NAME" >> "$SESSION_LOG_DIR/agent-audit.log" 2>/dev/null
exit 0