{"name":"METADATA_SERVER_DETECTION","slug":"metadata-server-detection","family":"env","title":"Environment variables","noun":"environment variable","description":"Controls how the bundled Google `gcp-metadata` library decides whether a GCE metadata server is available. The trimmed, lowercased value must be `assume-present` (treat it as present without a ping), `none` (treat it as absent), `bios-only` (use only the BIOS probe) or `ping-only` (skip straight to pinging); any other non-empty value throws a `RangeError`, and unset uses the default ping.","description_source":"code","described_by":{"bundle":"2.1.286","author":"claude-opus-5-5"},"presence":{"first_seen":"2.1.138","removed_in":null,"in_current_build":true,"newest_mined":"2.1.309","builds":150,"mined_builds":150,"first_cited":{"version":"2.1.202","released_at":"2026-07-06 20:41:23","spans":1}},"aliases":[],"entries":[{"version":"2.1.202","anchor":"aws-and-gcp-credential-environment-variables-forwarded-to-su","heading":"AWS and GCP Credential Environment Variables Forwarded to Subagents","line":null,"released_at":"2026-07-06 20:41:23","reason":"found in this entry's text"}],"entries_total":1,"docs":[],"docs_total":0,"gates":[],"related":[],"url":"https:\/\/changelogs.core-directive.com\/reference\/env\/metadata-server-detection","family_url":"https:\/\/changelogs.core-directive.com\/reference\/env.json"}