403 PERMISSION_DENIED "Your project has been denied access" on multiple fresh projects/keys

Gemini API
1

Hello Gemini API Team,

I am experiencing a persistent 403 PERMISSION_DENIED error on every generateContent request:

{
“error”: {
“code”: 403,
“message”: “Your project has been denied access. Please contact support.”,
“status”: “PERMISSION_DENIED”
}
}

What I have already verified:

  • The REST API can list models successfully (GET /v1beta/models returns HTTP 200 with a full model list).
  • generateContent fails through the official @google/genai Node.js SDK.
  • generateContent also fails via a direct REST request (curl), completely bypassing any SDK or backend code.
  • I have tried multiple models (gemini-3.6-flash, gemini-3.5-flash-lite) — all fail identically.
  • I have tried this on TWO separate, freshly created Google Cloud projects and API keys generated via Google AI Studio — the exact same error occurs on both, ruling out a single-project issue.
  • No prior usage history, no known policy violations, no quota/billing warnings shown in AI Studio or Cloud Console.

Affected Project Number: 1078461151087
Affected Project ID: fuoritraccia-1

Use case: personal music-discovery web app (non-commercial, low volume, standard generateContent calls with JSON response mode).

Could you please manually review and restore access for these project(s)? Happy to provide any additional diagnostic info needed.

Thank you.