Claude Code on Google Cloud's Agent Platform changedgoogle-vertex-ai
Nearest release: v2.1.267, published under an hour after this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.
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148148Claude Code supports [X.509 certificate-based Workload Identity Federation](https://cloud.google.com/iam/docs/workload-identity-federation-with-x509-certificates) through the same Application Default Credentials chain. Set `GOOGLE_APPLICATION_CREDENTIALS` to the path of your credential configuration file.
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150150<Note>
151 Claude Code uses `ANTHROPIC_VERTEX_PROJECT_ID` as the project ID for Google Cloud's Agent Platform requests. The `GCLOUD_PROJECT` and `GOOGLE_CLOUD_PROJECT` environment variables and the credential file referenced by `GOOGLE_APPLICATION_CREDENTIALS` take precedence over it. If none of these are set, the project ID is resolved from your `gcloud` configuration or the attached service account.
151 Claude Code addresses Google Cloud's Agent Platform requests to the project in `ANTHROPIC_VERTEX_PROJECT_ID`, even when `GCLOUD_PROJECT`, `GOOGLE_CLOUD_PROJECT`, or the credential file referenced by `GOOGLE_APPLICATION_CREDENTIALS` carries a different project.
152152</Note>
153153
154154#### Advanced credential configuration
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163163 }
164164}
165165```
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167Before running the command, Claude Code requests an access token with your current credentials to confirm they're actually expired, and skips the command when they still work.
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169If the check doesn't finish within five seconds, Claude Code also skips the command and runs it only after a request fails with a credential error. Before v2.1.261, a check that timed out counted as an expired credential, so the command could open your browser at startup even though your credentials were still valid.
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167171Claude Code shows you the command's output, but can't send the command interactive input. This works well for browser-based authentication flows where the CLI shows a URL and you complete authentication in the browser. The refresh command times out after three minutes if authentication does not complete. If you set `gcpAuthRefresh` in project settings such as `.claude/settings.json`, Claude Code runs it under the same [workspace trust rule as hooks in settings files](/docs/en/permissions#what-runs-before-you-trust-a-folder), which includes `-p` sessions in folders you've never trusted.
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