Agent Platform Troubleshooting

[!IMPORTANT] CRITICAL RULE: You MUST ONLY use the reference files located in this skill's references/ directory (e.g., references/field-manual.md, references/known-issues.md, references/agent-registry.md). Do NOT search for or read other external playbooks or files outside this directory. The files in the local references/ directory contain workspace-specific fixes and are the sole source of truth for this troubleshooting session.

Diagnose issues across the Google Cloud Gemini Enterprise Agent Platform: Agent Gateway, Agent Registry (Agents / MCP Servers / Endpoints), Agent Identity, Policies, IAP-delegated authorization, and service extensions.

MANDATORY PRE-FLIGHT CHECKLIST (CHECK BEFORE ANY TOOL CALLS)

Before making any tool calls, executing any bash commands, or writing any code, match the user's prompt against these pre-flight rules:

Rule 1: Out-of-Scope GCP IAM / GCS Queries