agent-monitor（Agent 监视器）

Agent Monitor - Agent Work Status Monitoring

Overview

This skill provides subagent work status monitoring and automatic activation capabilities:

1. Status Monitoring - Real-time monitoring of agent runtime status
2. Stall Detection - Detecting "stalled" states where an agent has been unresponsive for over 5 minutes
3. Automatic Activation - Automatically sending activation messages to resume agent operation

Core Capabilities

1. Monitor Agent Status

Use the subagents tool to obtain a list of currently running agents:

# List recently running agents
subagents(action="list", recentMinutes=30)

2. Detect Stalled Status

Detection logic:

• Obtain the agent's last activity time
• Calculate the difference from the current time
• If over 5 minutes (300 seconds) with no activity → Determine as "stalled"

3. Automatically Activate Agents

Use the steer action of the subagents tool to send an activation message:

# Send an activation message to a specified agent
subagents(action="steer", target="<agent-id>", message="Continue working")

Workflow

┌─────────────────────┐
│  Get Agent List     │
└──────────┬──────────┘
           ▼
┌─────────────────────┐
│ Check Each Agent's  │
│  Last Activity Time │
└──────────┬──────────┘
           ▼
      ┌────────┐
      │ >5min? ├──No──┐
      └────┬───┘      │
          Yes│         │
           ▼          │
┌─────────────────────┐│
│  Determine as       ││
│  Stalled Status     ││
└──────────┬──────────┘│
           ▼           │
┌─────────────────────┐│
│  Send Activation    ││
│  Message to Resume  ││
└─────────────────────┘│
           │           │
           └───────────┘
                 ▼
        ┌─────────────────┐
        │ Continue Monitoring│
        └─────────────────┘

Usage Examples

Example 1: Monitor All Agents

# 1. Get agent list
result = subagents(action="list", recentMinutes=30)

# 2. Check each agent's status
for agent in result.agents:
    idle_time = calculate_idle_time(agent.lastActivity)
    if idle_time > 300:  # Over 5 minutes
        # 3. Automatically activate
        subagents(action="steer", target=agent.id, message="Please continue executing the task")

Example 2: Monitor a Specific Agent

# Monitor an agent with a specified ID
agent_id = "builder-agent-001"
result = subagents(action="list", recentMinutes=10)

# Find the target agent
for agent in result.agents:
    if agent.id == agent_id:
        if is_stalled(agent, threshold=300):
            activate_agent(agent_id)

Script Tool

monitor_agents.py

Located at scripts/monitor_agents.py, provides complete monitoring functionality:

# Monitor and automatically activate stalled agents
python scripts/monitor_agents.py --threshold 300 --auto-activate

# Detect only, without automatic activation
python scripts/monitor_agents.py --threshold 300 --dry-run

# Monitor a specific agent
python scripts/monitor_agents.py --target agent-id-001

Parameter descriptions:

• --threshold: Stall determination threshold (seconds), default 300 (5 minutes)
• --auto-activate: Automatically activate stalled agents
• --dry-run: Detect only, do not execute activation
• --target: Specify a specific agent ID to monitor

Integration into Scheduled Tasks

The monitoring script can be integrated into cron scheduled tasks for continuous monitoring:

# Check every 2 minutes
*/2 * * * * python /path/to/monitor_agents.py --auto-activate

Notes

1. Threshold Setting: Adjust the stall determination threshold based on the task type; complex tasks may require longer thresholds
2. Activation Message: Activation messages sent should be concise and clear, prompting the agent to continue working
3. Avoid False Activation: Ensure the agent is genuinely stalled before activating to avoid interfering with normal thought processes
4. Logging: It is recommended to log each detection and activation operation for subsequent analysis