Gemini Enterprise Registration Requires: A deployed agent. For Agent Runtime, (created by ) enables auto-detection. For Cloud Run or GKE, provide the agent card URL and flags directly. Prerequisites 1. Agent must be deployed — the agent must be running and reachable 2. Gemini Enterprise app must exist — Create one in Google Cloud Console → Gemini Enterprise → Apps before registering 3. (Agent Runtime only) — Created automatically by ; contains the agent runtime ID, deployment target, and A2A flag Required Permissions for A2A on Cloud Run - granted to the Discovery Engine service account ( ) o…