Hello,
I am experiencing a persistent Gemini API access issue with one of my Google Cloud projects.
Project name:
Gemini Project1
Project ID:
gen-lang-client-08645896..
The project is visible in Google AI Studio with:
- Billing Tier: Free tier
- Gemini API enabled
- available quota for gemini-3.6-flash
- API key created successfully
The API key itself appears to be valid, because the following request works correctly and returns the list of available models:
GET
https://generativelanguage.googleapis.com/v1beta/models?key=API_KEY
However, every generateContent request fails with:
403 PERMISSION_DENIED
{
“error”: {
"code": 403,
"message": "Your project has been denied access. Please contact support.",
"status": "PERMISSION_DENIED"
}
}
I also tested the API directly with curl, without using any SDK:
POST
https://generativelanguage.googleapis.com/v1beta/models/gemini-3.6-flash:generateContent
and received the same 403 error.
Additional observations:
- Google AI Studio itself is able to generate responses successfully.
- Gemini API is enabled in Google Cloud Console.
- The project has Free Tier quota assigned.
- The quota is not exhausted.
- Listing models through the API succeeds.
- Only generateContent requests are denied.
This suggests that the project may have been incorrectly flagged or denied access to content generation.
There is no warning, suspension notice, or appeal option displayed in Google AI Studio.
The Billing page only shows “No billing account” and an option to set up billing.
Could you please review the project and restore Gemini API generateContent access if this restriction is a false positive?
Thank you.