Check Gemini, Gemini CLI, and API access

Gemini, Gemini CLI, and the Gemini API are separate ways to do developer work. Check the chosen account and authentication method for the surface you are actually using.

Match access to the task

For a manual engineering brief or selected-source research, inspect the account and available features in Gemini. For repository work, inspect Gemini CLI's authentication and model settings. For your own application, identify the API project and its billing configuration.

Gemini CLI documents Google sign-in, Gemini API-key authentication, and Vertex AI authentication. Organization accounts can require a Google Cloud project even when an individual-account setup does not.

A Google AI subscription and an API project's billing configuration are different things. Follow the documentation for the selected path instead of assuming that every request draws from the same allowance.

Record an explicit developer profile

For a local CLI task, record:

Product: Gemini CLI
Account type: individual or organization
Authentication: Google sign-in, API key, or Vertex AI
Project: configured project identity, if required
Requested model: selected profile
Actual model: reported value, or unknown
Execution policy: the tested policy configuration

Keep this metadata alongside the task result. Do not include the key, cached credentials, or an authentication file.

If a model routes automatically, record that behavior. A model displayed in the interface may be a requested profile rather than proof of every model that handled the work.

Prepare headless access separately

A successful interactive sign-in does not by itself verify the account, credential availability, or permission behavior of a background process. Follow the CLI's headless authentication guidance for that environment.

The programmatic-use guide explains why policy verification is separate from authentication. A valid credential does not establish that an unapproved tool action will be blocked.

Before a real pipeline run, use a synthetic input and verify the intended account, effective permissions, process result, and usage reporting. Do not silently switch to another provider after an access failure.

What goes wrong

A personal and organization account can have different project requirements. A lingering API environment variable can make a process use a different path from the one you expected. Free-tier and paid-tier API terms and limits can also differ. Inspect the active configuration and official account-specific guidance after changing sign-in or project settings.

How to check

Compare the recorded profile with the CLI's current authentication instructions and your account's project/usage view. Confirm that the selected model is available through that path before creating a pipeline role around it.

Use Google's API model reference for selected API specifications. Keep observed CLI limits and Gemini feature availability in the access record instead of copying API limits into them.