[Bug] Persistent HTTP 503 MODEL_CAPACITY_EXHAUSTED loop on specific account (TraceID: 0xaed272f2e0)

Google Antigravity
,
1

Hello Google Antigravity Engineering Team,

I am experiencing a critical account-sync bug in the Antigravity IDE that has persisted for several weeks. My primary account is locked in a constant 503 Service Unavailable loop whenever I try to initialize an AI agent (e.g., claude-sonnet-4-6). The agent terminates immediately after 1 or 2 seconds.

Why this appears to be an account-routing bug and not actual high traffic:

  • My daily quota limits are completely full and unused.
  • I have a secondary Google account running on the exact same hardware, network, and time schedule, which executes the agents perfectly without any 503 errors.
  • The error originates from the orchestration layer (cloudcode-pa.googleapis.com). It appears my primary account is stuck in a faulty shard, a bugged environment state, or has an incorrect quota-sync on the backend.

I am currently developing my thesis project—a system to detect fraudulent job offers using NLP and GenAI—and I critically rely on Antigravity’s agentic workflows for my backend (Node.js) and frontend (Next.js/React) development. This persistent account lockout is severely disrupting my progress.

Error Details & Telemetry:

  • Trajectory ID: 6ea11a96-da51-4eaa-9b42-
  • TraceID: 0xaed272f2e0
  • Error Code: HTTP 503 (MODEL_CAPACITY_EXHAUSTED)

Raw Error Log:

{
  "error": {
    "code": 503,
    "details": [
      {
        "@type": "[type.googleapis.com/google.rpc.ErrorInfo](https://type.googleapis.com/google.rpc.ErrorInfo)",
        "domain": "cloudcode-pa.googleapis.com",
        "metadata": {
          "model": "claude-sonnet-4-6"
        },
        "reason": "MODEL_CAPACITY_EXHAUSTED"
      }
    ],
    "message": "No capacity available for model claude-sonnet-4-6 on the server",
    "status": "UNAVAILABLE"
  }
}