Probem: Agent terminated due to error

Google Antigravity
1

Agent terminated due to error

You can prompt the model to try again or start a new conversation if the error persists.See our troubleshooting guide for more help.

Trajectory ID: 09d264d9-60eb-4
Error: HTTP 503 Service Unavailable
Sherlog:
TraceID: 0x2f7250
Headers: {“Alt-Svc”:[“h3=“:443”; ma=2592000,h3-29=“:443”; ma=2592000”],“Content-Length”:[“527”],“Content-Type”:[“text/event-stream”],“Date”:[“Mon, 16 Mar 2026 17:56:49 GMT”],“Server”:[“ESF”],“Server-Timing”:[“gfet4t7; dur=584”],“Vary”:[“Origin”,“X-Origin”,“Referer”],“X-Cloudaicompanion-Trace-Id”:[“2f72509081f5a2bb”],“X-Content-Type-Options”:[“nosniff”],“X-Frame-Options”:[“SAMEORIGIN”],“X-Xss-Protection”:[“0”]}

{
“error”: {
“code”: 503,
“details”: [
{
“@type”: “type.googleapis.com/google.rpc.ErrorInfo”,
“domain”: “cloudcode-pa.googleapis.com”,
“metadata”: {
“model”: “gemini-3-flash-agent”
},
“reason”: “MODEL_CAPACITY_EXHAUSTED”
},
{
“@type”: “type.googleapis.com/google.rpc.RetryInfo”,
“retryDelay”: “10s”
}
],
“message”: “No capacity available for model gemini-3-flash-agent on the server”,
“status”: “UNAVAILABLE”
}
}

anyone having this issue???

2

Hi @ABRAHAM_GLORY,

Welcome to the Forum,

A 503 Service Unavailable error indicates that the service is temporarily overloaded or experiencing a capacity constraint. This is a known occurrence during peak usage hours, particularly with long-context requests. The best immediate step is to wait a few minutes and try again.

As a temporary workaround, we also recommend re-authenticating your Google account within Antigravity as this has successfully resolved the issue for several users.

2 Likes