{"name":"CIRCLECI","slug":"circleci","family":"env","title":"Environment variables","noun":"environment variable","description":"Read by deployment-environment detection: when it has any non-empty value and no earlier check matched (including GitHub Actions and GitLab CI), the environment is reported as `circleci` in the `deployment_environment` field of Claude Code's telemetry metadata. It is also checked by the bundled terminal color-support detection, where, with `CI` also set and no earlier rule deciding, its presence selects 16 colors in two bundled copies and 24-bit color in a third.","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":"2.1.308","builds":149,"mined_builds":149,"first_cited":null},"aliases":[],"entries":[],"entries_total":0,"docs":[],"docs_total":0,"gates":[],"related":[],"url":"https:\/\/changelogs.core-directive.com\/reference\/env\/circleci","family_url":"https:\/\/changelogs.core-directive.com\/reference\/env.json"}