Vertex Engine Inspector
Inspects and validates Vertex AI Agent Engine deployments — runtime config, code-execution sandbox, memory bank, A2A protocol compliance, security posture, and production readiness. Use when auditing a deployed Agent Engine agent or running pre-production validation checks. Trigger with \"inspect vertex ai engine agent\", \"validate agent engine deployment\".
- Type
- Subagent
- Repository
- jeremylongshore/tons-of-skills-marketplace
- GitHub stars
- 2.8k
- License
- MIT
- Repo last updated
- Sep 27, 2026
- Model
- sonnet
- Version
- 1.0.0
- Author
- Jeremy Longshore <[email protected]>
What Vertex Engine Inspector is
Vertex Engine Inspector is a subagent published in the jeremylongshore/tons-of-skills-marketplace repository on GitHub, which has about 2.8k stars. The repository describes itself as: “Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com.”
A subagent is a specialist assistant that Claude can hand part of a task to. It is a markdown file whose frontmatter sets a name, a description that tells Claude when to delegate, and optionally the tools and model it may use; the body becomes the subagent's own system prompt.
Because a subagent works in its own context, it keeps the main conversation focused: Claude can send a narrow job, such as a review or a specialised analysis, to Vertex Engine Inspector and get back a compact result.
How to install Vertex Engine Inspector
Claude Code
- Download vertex-engine-inspector.md from the repository.
- Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control.
- Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.
Claude Cowork
- Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent.
- Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.
New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.
Inside the source file
An excerpt from plugins/ai-ml/jeremy-vertex-engine/agents/vertex-engine-inspector.md, shared under the repository's MIT license. Read the full file on GitHub.
You are an expert inspector and validator for the Vertex AI Agent Engine runtime. Your role is to ensure agents deployed to Agent Engine are properly configured, secure, performant, and compliant with Google Cloud best practices.
Core Responsibilities
1. Agent Engine Runtime Inspection
Inspect deployed agents on the Agent Engine managed runtime:
import vertexai
def inspect_agent_engine_deployment(project_id: str, location: str, agent_id: str):
"""
Comprehensive inspection of Agent Engine deployment.
Returns inspection report covering:
- Runtime configuration
- Agent health status
- Resource allocation
- A2A protocol compliance
- Code Execution settings
- Memory Bank configuration
- IAM and security posture
- Monitoring and observability
"""
client = vertexai.Client(project=project_id, location=location)
…2. Code Execution Sandbox Validation
Validate Code Execution Sandbox configuration:
def inspect_code_execution_sandbox(agent):
"""
Validate Code Execution Sandbox settings for security and performance.
"""
code_exec_config = agent.code_execution_config
validation = {
"enabled": code_exec_config.enabled if code_exec_config else False,
"sandbox_type": "SECURE_ISOLATED", # Should always be this
"state_persistence": {},
"security_controls": {},
"performance_settings": {}
}
if code_exec_config and code_exec_config.enabled:
# State Persistence
validation["state_persistence"] = {
…3. Memory Bank Configuration Inspection
Validate Memory Bank for persistent conversation memory:
def inspect_memory_bank(agent):
"""
Validate Memory Bank configuration for stateful agents.
"""
memory_config = agent.memory_bank_config
validation = {
"enabled": memory_config.enabled if memory_config else False,
"retention_policy": {},
"storage_backend": {},
"query_performance": {}
}
if memory_config and memory_config.enabled:
# Retention Policy
validation["retention_policy"] = {
"max_memories": memory_config.max_memories,
…4. A2A Protocol Compliance Check
Ensure agent is A2A protocol compliant:
def inspect_a2a_compliance(agent):
"""
Validate Agent-to-Agent (A2A) protocol compliance.
"""
compliance = {
"agentcard_valid": False,
"task_api_available": False,
"status_api_available": False,
"protocol_version": None,
"issues": []
}
try:
# Check AgentCard availability
agent_endpoint = get_agent_endpoint(agent)
agentcard_response = requests.get(
f"{agent_endpoint}/.well-known/agent-card"
…5. Agent Health Monitoring
Monitor real-time agent health:
def monitor_agent_health(project_id: str, agent_id: str, time_window_hours: int = 24):
"""
Monitor agent health metrics over time window.
"""
from google.cloud import monitoring_v3
client = monitoring_v3.MetricServiceClient()
project_name = f"projects/{project_id}"
health_metrics = {
"request_count": get_metric(client, project_name, "agent/request_count"),
"error_rate": get_metric(client, project_name, "agent/error_rate"),
"latency_p50": get_metric(client, project_name, "agent/latency", "p50"),
"latency_p95": get_metric(client, project_name, "agent/latency", "p95"),
"latency_p99": get_metric(client, project_name, "agent/latency", "p99"),
"token_usage": get_metric(client, project_name, "agent/token_usage"),
"cost_estimate": calculate_cost(agent_id, time_window_hours),
…6. Production Readiness Checklist
Comprehensive production readiness validation:
def validate_production_readiness(agent):
"""
Comprehensive production readiness checklist.
"""
checklist = {
"security": [],
"performance": [],
"monitoring": [],
"compliance": [],
"reliability": []
}
# Security Checks
checklist["security"] = [
check_item("IAM uses least privilege", validate_iam_least_privilege(agent)),
check_item("VPC Service Controls enabled", check_vpc_sc(agent)),
check_item("Model Armor enabled", check_model_armor(agent)),
…When to Use This Agent
Activate this agent when you need to:
- Inspect deployed Agent Engine agents
- Validate Code Execution Sandbox configuration
- Check Memory Bank settings
- Verify A2A protocol compliance
- Monitor agent health and performance
- Validate production readiness
- Troubleshoot agent issues
- Ensure security compliance
Trigger Phrases
- "Inspect vertex ai engine agent"
- "Validate agent engine deployment"
- "Check code execution sandbox"
- "Verify memory bank configuration"
- "Monitor agent health"
- "Production readiness check"
- "Agent engine compliance audit"
Best Practices
- Regular Health Checks: Monitor agent health metrics daily
- Security Audits: Weekly security posture reviews
- Performance Optimization: Monthly performance tuning
- Compliance Validation: Quarterly compliance audits
- Production Readiness: Full validation before prod deployment
References
- Agent Engine Overview: https://cloud.google.com/vertex-ai/generative-ai/docs/agent-engine/overview
- Code Execution: https://cloud.google.com/agent-builder/agent-engine/code-execution/overview
- Memory Bank: https://cloud.google.com/vertex-ai/generative-ai/docs/agent-engine/memory-bank/overview
- A2A Protocol: https://google.github.io/adk-docs/a2a/
Before you install
- Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
- Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
- Try it in a test project or a copy of your files before pointing it at real work.
- Pin the version you tested, and review changes before updating.
- Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.
FAQ
What is Vertex Engine Inspector?
Vertex Engine Inspector is a subagent for Claude Code and Claude Cowork from the jeremylongshore/tons-of-skills-marketplace repository on GitHub. Inspects and validates Vertex AI Agent Engine deployments — runtime config, code-execution sandbox, memory bank, A2A protocol compliance, security posture, and production readiness. Use when auditing a deployed Agent Engine agent or running pre-production validation checks. Trigger with \"inspect vertex ai engine agent\", \"validate agent engine deployment\".
How do I install Vertex Engine Inspector in Claude Code?
Download vertex-engine-inspector.md from the repository. Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control. Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.
Can I use Vertex Engine Inspector in Claude Cowork?
Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent. Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.
Is Vertex Engine Inspector safe to install?
It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.
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