Request for Manual Review — Gemini API 403 “Your project has been denied access” / Billing Tier Unavailable

Hello Google AI Developers Forum,

I would like to request a manual review of my Google Cloud project for Gemini API access.

I am currently receiving the following error when calling the Gemini API:

403 PERMISSION_DENIED
“Your project has been denied access. Please contact support.”

My project also shows:

  • Billing Tier: Unavailable

  • API access is restricted

  • The console asks me to set up payment information

I would like to use the Gemini API under the Free Tier and do not want to enable paid billing if it is not required.

I have already completed the following steps:

  • Verified my Google account information

  • Verified my phone number

  • Enabled 2-Step Verification

  • Created a new Gemini API key

  • Confirmed that the API key is associated with the correct Google Cloud project

  • Retried the API request with the new API key

  • Confirmed that the same 403 error occurs

The issue is not specific to a single API key, as a newly created API key produces the same error.

I am using the Gemini API from Google Apps Script for a personal project that generates marketing-related X posts.

Could you please review my project and account and let me know whether Gemini API Free Tier access can be restored or enabled?

I would appreciate a manual review of the project restriction.

Thank you for your help.