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skills/validator-expert/SKILL.md

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+---
+name: validator-expert
+description: |
+  Production readiness validator for Vertex AI Agent Engine deployments (ADK agents ONLY).
+  5-category validation: Security (IAM, VPC-SC, Model Armor), Monitoring (2025 dashboard, alerts, SLOs), Performance (auto-scaling, Code Execution TTL), Compliance (audit logs, data residency), Best Practices (Memory Bank, A2A protocol).
+  Generates weighted production readiness score (0-100%) with PASS/WARNING/FAIL status.
+  Triggers: "validate agent engine deployment", "production readiness", "security audit", "check compliance"
+allowed-tools: Read, Grep, Glob, Bash
+version: 1.0.1
+---
+
+## What This Skill Does
+
+Production validator for Vertex AI deployments. Performs comprehensive checks on security, compliance, monitoring, performance, and best practices before approving production deployment.
+
+## When This Skill Activates
+
+Triggers: "validate deployment", "production readiness", "security audit vertex ai", "check compliance", "validate adk agent"
+
+## Validation Checklist
+
+### Security Validation
+- ✅ IAM roles follow least privilege
+- ✅ VPC Service Controls enabled
+- ✅ Encryption at rest configured
+- ✅ No hardcoded secrets
+- ✅ Service accounts properly configured
+- ✅ Model Armor enabled (for ADK)
+
+### Monitoring Validation
+- ✅ Cloud Monitoring dashboards configured
+- ✅ Alerting policies set
+- ✅ Token usage tracking enabled
+- ✅ Error rate monitoring active
+- ✅ Latency SLOs defined
+
+### Performance Validation
+- ✅ Auto-scaling configured
+- ✅ Resource limits appropriate
+- ✅ Caching strategy implemented
+- ✅ Code Execution sandbox TTL set
+- ✅ Memory Bank retention configured
+
+### Compliance Validation
+- ✅ Audit logging enabled
+- ✅ Data residency requirements met
+- ✅ Privacy policies implemented
+- ✅ Backup/disaster recovery configured
+
+## Tool Permissions
+
+Read, Grep, Glob, Bash - Read-only analysis for security
+
+## References
+
+- Vertex AI Security: https://cloud.google.com/vertex-ai/docs/security