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If the Gemini API rejects a request from a Cloudflare Worker for its location, the rejection may reflect where Google sees the server-side request—not where you, the developer, or your end user is physically located. Google AI Developers Forum guidance says Cloudflare does not guarantee where its servers run. That is a plausible explanation, not proof of the origin of any particular request or a guaranteed fix.
Why can a Cloudflare Worker trigger a location rejection?
A Worker calls the Gemini API from server-side code. The request therefore reaches Google through the Worker’s execution path; your own country does not, by itself, establish the location Google associates with that request.
In a Google AI Developers Forum reply dated October 14, 2024, respondent afirstenberg wrote: “The problem in your case is that Cloudflare doesn’t guarantee the location of their servers.” This is the most directly relevant explanation in the available sources, but it is community guidance rather than a formal statement about the location of a specific request.
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Google’s supported-regions page lists where the Gemini API and Google AI Studio are available. Check the live list because availability can change: Gemini API and AI Studio availability.
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Google also says that an AI Studio page redirect can result from regional restrictions, not meeting its minimum age requirement of 18+, or missing age verification on the Google Account. Those checks are distinct from the location of a Worker’s API request. Google’s note that Colab restrictions depend on the Colab instance’s region applies to Colab; it does not establish how Cloudflare routes Worker requests.
What do the different error messages tell you?
Developers have reported messages such as “User location is not supported for the API use” and “User location is not supported for the API use without a billing account linked.” Another report describes a 401 regional-restriction message and a redirect to AI Studio. These are individual reports, not evidence that every message has the same cause.
One Cloudflare community report involved a Worker calling an older Gemini 1.5 Flash endpoint. The message’s reference to billing does not prove that linking billing is the only remedy; request location may also be involved. A separate 2025 Google forum report described a 401 regional restriction while using Workers, but the reply asked for the user’s actual region without a VPN and did not establish a cause.
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- Check the relevant country and account eligibility. Compare the user’s actual country with Google’s current supported-regions list. If the symptom is an AI Studio webpage redirect, also check the 18+ requirement and whether the Google Account’s age has been verified.
- Compare local and deployed requests. Send a minimal request using the same API key from local development and from the deployed Worker. Record the exact endpoint and model, HTTP status, full response body, whether billing is linked, and the execution context.
- Separate direct API calls from AI Gateway calls. If you use Cloudflare AI Gateway, note whether the error occurs on the direct Google API path, the gateway path, or both. This comparison can help narrow the path involved; it does not establish the request’s geographic origin.
- Interpret the result cautiously. If the local call works but the Worker call fails, the server-side execution or request path is a reasonable focus for further investigation. A local success does not prove that a deployed Worker will be seen as originating from a supported region.
Which options are worth trying?
Keep the direct Gemini API call and investigate the request context
This preserves your existing integration while you compare local and deployed behavior. The reviewed sources do not establish a general way to force a Worker request to originate from a particular Google-supported geography.
Test Cloudflare AI Gateway
Cloudflare documents Google AI Studio as a provider for AI Gateway, including Google API-key and stored-key request patterns, configuration with @google/genai, and an OpenAI-compatible route. See Cloudflare’s Google AI Studio provider documentation, last updated April 20, 2026. The documentation establishes that the integration is available; it does not promise that AI Gateway will change request geography or resolve a regional rejection.
Consider the forum’s paid-tier suggestion for deployment
In the October 14, 2024 forum reply, afirstenberg said that upgrading a deployment key to a paid tier “will work around this issue in most cases,” while a free-tier key could still be used for local development and testing. Treat this as dated community advice, not a current policy or universal guarantee. Check current billing terms, account eligibility, and behavior before relying on it.
Evaluate Gemini Enterprise Agent Platform if your location is unsupported
Google’s availability page points people outside the supported list to Gemini Enterprise Agent Platform. Whether it is a drop-in replacement for a particular Worker application is not established; check its current API and deployment fit before planning a migration.
Quick Recap
What the available evidence cannot establish
- The upstream IP address or precise physical location for a particular Worker request.
- A universal location-based workaround, including a guarantee that paid-tier keys or AI Gateway will resolve every rejection.
- AI Gateway’s exact egress geography or compatibility of Gemini Enterprise Agent Platform with a specific application.
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