403 Forbidden: Gemini API

Hey there, I run a live service and I started noticing an error coming back for every LLM prompt. I’m hitting the API from my server and local computer utilizing the Go client API with the same errors.

Error 403, Message: The caller does not have permission, Status: PERMISSION_DENIED, Details: []]

This service was functioning properly last night with no changes being made on my end. My IPs are added within my API key credentials. Nowhere near rate limits. No message from Google regarding my account. No idea what is going on.

Models tested: gemini-3.1-pro-preview, gemini-3.7-flash