# Hook Diagnostics

> >

- **Type:** Skill
- **Install:** `agentstack add skill-hoangsonww-claude-code-agent-monitor-hook-diagnostics`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [hoangsonww](https://agentstack.voostack.com/s/hoangsonww)
- **Installs:** 0
- **Category:** [Databases](https://agentstack.voostack.com/c/databases)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [hoangsonww](https://github.com/hoangsonww)
- **Source:** https://github.com/hoangsonww/Claude-Code-Agent-Monitor/tree/master/plugins/ccam-devtools/skills/hook-diagnostics
- **Website:** https://hoangsonww.github.io/Claude-Code-Agent-Monitor/

## Install

```sh
agentstack add skill-hoangsonww-claude-code-agent-monitor-hook-diagnostics
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# Hook Diagnostics

Diagnose hook integration issues between Claude Code and the Agent Monitor.

## Input

The user provides: **$ARGUMENTS**

This may be:
- "full" or empty (default: run all diagnostics)
- "install" to check hook installation only
- "connectivity" to check dashboard connectivity only
- "events" to check event delivery only

## Procedure

Run diagnostic checks in this order:

### 1. Hook Installation Check
Verify hooks are installed in Claude Code settings:

```bash
# Check if hooks exist in Claude Code settings
cat ~/.claude/settings.json | jq '.hooks // empty'
```

Verify:
- All 7 expected hook types are registered: `PreToolUse`, `PostToolUse`, `Stop`, `SubagentStop`, `Notification`, `SessionStart`, `SessionEnd`
- Hook commands point to the correct handler script path
- Handler script exists and is readable at the configured path

### 2. Dashboard Connectivity
Test that the dashboard API is reachable:

```bash
curl -sf http://localhost:4820/api/health
```

Verify:
- Dashboard responds with 200 OK
- Response includes expected health fields
- WebSocket endpoint is accessible

### 3. Hook Handler Validation
Check the hook handler script:

```bash
# Verify handler exists and is executable
ls -la 
# Syntax check
node --check 
```

### 4. Event Delivery Test
Send a test event and verify it arrives:

```bash
echo '{"hook_type":"test","session_id":"diag-test","data":{}}' | \
  curl -sf -X POST http://localhost:4820/api/hooks/event \
  -H 'Content-Type: application/json' -d @-
```

### 5. Database Check
Verify the database is writable and events are persisted:

```bash
curl -sf http://localhost:4820/api/stats
curl -sf http://localhost:4820/api/events?limit=5
```

### 6. Recent Event Flow
Check if events are flowing:
- Time since last event received
- Events received in last hour
- Any gaps in event delivery

## Output Format

Present as a diagnostic report with:
```
Hook Diagnostics Report
━━━━━━━━━━━━━━━━━━━━━━
✅ Hook Installation .............. PASS
✅ Dashboard Connectivity ......... PASS
✅ Handler Script ................. PASS
⚠️ Event Delivery ................ WARN (slow)
✅ Database ....................... PASS
❌ Recent Event Flow .............. FAIL (no events in 2h)
━━━━━━━━━━━━━━━━━━━━━━
Overall: 5/6 checks passed
```

For each failed or warning check, include:
- What was expected vs what was found
- Specific remediation steps
- Commands to fix the issue

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [hoangsonww](https://github.com/hoangsonww)
- **Source:** [hoangsonww/Claude-Code-Agent-Monitor](https://github.com/hoangsonww/Claude-Code-Agent-Monitor)
- **License:** MIT
- **Homepage:** https://hoangsonww.github.io/Claude-Code-Agent-Monitor/

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** yes
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-hoangsonww-claude-code-agent-monitor-hook-diagnostics
- Seller: https://agentstack.voostack.com/s/hoangsonww
- Browse the marketplace: https://agentstack.voostack.com/browse

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