{"name":"tengu_rustling_blossom","slug":"tengu-rustling-blossom","family":"flag","title":"Feature flags","noun":"feature flag","description":"Setting `CLAUDE_CODE_EXPERIMENTAL_CODE_MODE` asks Claude Code to switch on an experimental Code Mode, which it can refuse for several reasons","description_source":"entry","described_by":{"version":"2.1.318","anchor":"experimental-code-mode-repl-env-vars-added-with-restart-h"},"presence":{"first_seen":null,"removed_in":null,"in_current_build":false,"newest_mined":"2.1.322","builds":0,"mined_builds":161,"first_cited":{"version":"2.1.318","released_at":"2026-11-03 21:55:17","spans":1}},"aliases":[],"entries":[{"version":"2.1.318","anchor":"experimental-code-mode-repl-env-vars-added-with-restart-h","heading":"Experimental Code Mode can be requested with an environment variable","line":"Setting `CLAUDE_CODE_EXPERIMENTAL_CODE_MODE` asks Claude Code to switch on an experimental Code Mode, which it can refuse for several reasons","released_at":"2026-11-03 21:55:17","reason":"gate cited by this entry"}],"entries_total":1,"docs":[],"docs_total":0,"gates":[{"version":"2.1.318","state":"unknown","account":null,"baseline":null,"code_default":false}],"related":[{"name":"tengu_rustling_crescent","slug":"tengu-rustling-crescent","description":"Claude Code can list the subagents that ran earlier in a session, off unless CLAUDE_CODE_SUBAGENT_HISTORY is set or it is switched on remotely"},{"name":"tengu_rustling_gizmo","slug":"tengu-rustling-gizmo","description":"Two remote settings can set the longest Bash `timeout`, in whole minutes from five minutes up, and Claude is told the limit"},{"name":"tengu_rustling_lantern","slug":"tengu-rustling-lantern","description":"A remote switch can now swap in alternate instruction text for some tools, and the existing text is used unless it is switched on remotely"},{"name":"tengu_rustling_lighthouse","slug":"tengu-rustling-lighthouse","description":null},{"name":"tengu_rustling_orbit","slug":"tengu-rustling-orbit","description":"A missing policy-limits response with no cache no longer counts as a failure; the session runs with no restrictions instead."},{"name":"tengu_rustling_pixel","slug":"tengu-rustling-pixel","description":"Claude Code can now keep extended-thinking content across any model switch, not just upgrades"},{"name":"tengu_rustling_sunset","slug":"tengu-rustling-sunset","description":"Claude Code can now show a heartbeat message while waiting on a rate-limit retry"}],"url":"https:\/\/changelogs.core-directive.com\/reference\/flag\/tengu-rustling-blossom","family_url":"https:\/\/changelogs.core-directive.com\/reference\/flag.json"}