{"name":"CLOUDSDK_PROXY_USERNAME","slug":"cloudsdk-proxy-username","family":"env","title":"Environment variables","noun":"environment variable","description":"Concurrent sandboxes now get unique proxy usernames instead of sharing one identity.","description_source":"entry","described_by":{"version":"2.1.224","anchor":"sandbox-proxy-credentials-are-unique-per-sandbox-instance"},"presence":{"first_seen":null,"removed_in":null,"in_current_build":false,"newest_mined":"2.1.309","builds":0,"mined_builds":150,"first_cited":{"version":"2.1.224","released_at":"2026-08-07 01:36:32","spans":1}},"aliases":[],"entries":[{"version":"2.1.224","anchor":"sandbox-proxy-credentials-are-unique-per-sandbox-instance","heading":"Sandbox proxy credentials are unique per sandbox instance","line":"Concurrent sandboxes now get unique proxy usernames instead of sharing one identity.","released_at":"2026-08-07 01:36:32","reason":"named in this entry, found in this entry's text"}],"entries_total":1,"docs":[],"docs_total":0,"gates":[],"related":[{"name":"CLOUDSDK_ACTIVE_CONFIG_NAME","slug":"cloudsdk-active-config-name","description":"Names the active gcloud configuration. It is part of the hash that names the lock and outcome files Claude Code uses when running the `gcpAuthRefresh` command. When building its GCP credential fingerprint, Claude Code reads `configurations\/config_<name>` from the gcloud config directory using this name, else the contents of the `active_config` file, else `default`; no fingerprint is built when the `active_config` file does not exist, even if this variable is set."},{"name":"CLOUDSDK_AUTH_ACCESS_TOKEN","slug":"cloudsdk-auth-access-token","description":"gh, aws, gcloud, bq and gsutil get placeholder credentials so they authenticate through the proxy instead of failing."},{"name":"CLOUDSDK_CONFIG","slug":"cloudsdk-config","description":"AWS and Google custom endpoint variables are now forwarded and scrubbed deliberately."},{"name":"CLOUDSDK_CORE_CUSTOM_CA_CERTS_FILE","slug":"cloudsdk-core-custom-ca-certs-file","description":null}],"url":"https:\/\/changelogs.core-directive.com\/reference\/env\/cloudsdk-proxy-username","family_url":"https:\/\/changelogs.core-directive.com\/reference\/env.json"}