{"name":"tengu_copper_lantern","slug":"tengu-copper-lantern","family":"flag","title":"Feature flags","noun":"feature flag","description":"Default `false`. A recall switch for the Claude Code background daemon when it runs as an installed service: the supervisor checks it on each poll, and when it is on it logs `service recall flag set`, stops its workers, shuts down with cause `service_recall` and uninstalls the service. A daemon started as a transient process ignores it.","description_source":"code","described_by":{"bundle":"2.1.285","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":null},"aliases":[],"entries":[{"version":"2.1.63","anchor":"opus-4-6-launch-promo-removed","heading":"Opus 4.6 Launch Promo Removed","line":null,"released_at":"2026-02-28 02:43:42","reason":"gate cited by this entry, found in this entry's text"}],"entries_total":1,"docs":[],"docs_total":0,"gates":[],"related":[{"name":"tengu_copper_fox","slug":"tengu-copper-fox","description":"Forked subagents are on by default in interactive sessions; set `CLAUDE_CODE_FORK_SUBAGENT` to false to opt out."},{"name":"tengu_copper_gazette","slug":"tengu-copper-gazette","description":null},{"name":"tengu_copper_heron","slug":"tengu-copper-heron","description":"Behind a remote switch, skills named `claude-ai:` or `anthropic-skills:` must really come from the matching source to be used"},{"name":"tengu_copper_hinge_wren","slug":"tengu-copper-hinge-wren","description":"Live document reads gain new fields for tracking update sequence and a gated deadline option"},{"name":"tengu_copper_kestrel","slug":"tengu-copper-kestrel","description":"Default `true`. Gates effort changes over Remote Control: when on, a connected client can set `effortLevel` through `apply_flag_settings` and the session reports its effort to the bridge as `effort_level` metadata. When off, such a request fails with `effort changes over Remote Control are turned off`."},{"name":"tengu_copper_kite","slug":"tengu-copper-kite","description":"With no API key, Claude Code can now fall back to a bearer token from the environment when fetching policy limits and remote settings"},{"name":"tengu_copper_thistle","slug":"tengu-copper-thistle","description":"The status line always calls MCP background work a \"task\" instead of sometimes saying \"job\"."}],"url":"https:\/\/changelogs.core-directive.com\/reference\/flag\/tengu-copper-lantern","family_url":"https:\/\/changelogs.core-directive.com\/reference\/flag.json"}