Appeal: 403 Error on Gemini API & CLI - Access Blocked (ListModels)

Gemini API
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Hi Google Developer Team,

I am writing to appeal a recent access block on my account. When I use the Gemini CLI, I am consistently getting the following error message across both my Google AI Studio and Google Cloud Console API keys:

“403 Requests to this API generativelanguage.googleapis.com method google.ai.generativelanguage.v1beta.ModelService.ListModels are blocked.”

Additionally, the Billing Tier for my API key is currently showing as “Unavailable”.

I suspect this might have been triggered by a third-party AI integration tool or an agentic coding environment I was using, which may have unintentionally caused a Terms of Service flag.

To resolve this, I have completely cleaned up my environment:

  1. I have stopped using all third-party agents and unofficial wrappers.
  2. I have revoked OAuth permissions for any unrecognized or third-party tools in my Google Account security settings.
  3. I plan to strictly use the official Gemini CLI and direct API calls moving forward.

Could you please review my account and help restore my API access?

My Google account email is: [你的Google账号邮箱]

Thank you for your time and assistance!

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