{"name":"tengu_cobalt_plinth_sainfoin","slug":"tengu-cobalt-plinth-sainfoin","family":"flag","title":"Feature flags","noun":"feature flag","description":"Two new switches set by Anthropic's servers are built in, one falling back to off and one to on","description_source":"entry","described_by":{"version":"2.1.290","anchor":"two-new-flag-helpers-tengu-cobalt-plinth-sainfoin-off-and"},"presence":{"first_seen":"2.1.290","removed_in":null,"in_current_build":true,"newest_mined":"2.1.295","builds":6,"mined_builds":138,"first_cited":null},"aliases":[],"entries":[{"version":"2.1.290","anchor":"two-new-flag-helpers-tengu-cobalt-plinth-sainfoin-off-and","heading":"Two new server-controlled switches with unknown purposes","line":"Two new switches set by Anthropic's servers are built in, one falling back to off and one to on","released_at":"2026-10-05 18:12:44","reason":"gate cited by this entry, found in this entry's text"}],"entries_total":1,"docs":[],"docs_total":0,"gates":[{"version":"2.1.290","state":"off","account":false,"baseline":false,"code_default":false}],"related":[{"name":"tengu_cobalt_plinth","slug":"tengu-cobalt-plinth","description":"PR review artifact pages can show a pinned button that approves the pull request from your GitHub account."},{"name":"tengu_cobalt_plinth_alder","slug":"tengu-cobalt-plinth-alder","description":"Claude can now read back a published artifact's contents; browsing, multi-file publishing and deletion are built but off."},{"name":"tengu_cobalt_plinth_aspen","slug":"tengu-cobalt-plinth-aspen","description":"The preview browser is locked to the local server and refuses to run if the lock fails."},{"name":"tengu_cobalt_plinth_bracken","slug":"tengu-cobalt-plinth-bracken","description":"You could start a private artifact from a published template, but two server switches keep it shut here."},{"name":"tengu_cobalt_plinth_bryony","slug":"tengu-cobalt-plinth-bryony","description":"Claude Code now always tells the artifact system it supports five-class permission asks, instead of depending on a setting or remote switch"},{"name":"tengu_cobalt_plinth_burnet","slug":"tengu-cobalt-plinth-burnet","description":"Artifact comment and subscription operations can each be switched on separately from the server."},{"name":"tengu_cobalt_plinth_campion","slug":"tengu-cobalt-plinth-campion","description":"Publish checks could warn about page thumbnails, but the experiment is off."},{"name":"tengu_cobalt_plinth_comfrey","slug":"tengu-cobalt-plinth-comfrey","description":"A new flag affects relay routing when reading published artifact files."},{"name":"tengu_cobalt_plinth_damson","slug":"tengu-cobalt-plinth-damson","description":"The artifact tool's flat verbs are mapped to a canonical action shape, with a gate deciding which toolset is active."},{"name":"tengu_cobalt_plinth_dataviz","slug":"tengu-cobalt-plinth-dataviz","description":"The chart skill hint now only appears if the dataviz skill is actually installed."}],"url":"https:\/\/changelogs.core-directive.com\/reference\/flag\/tengu-cobalt-plinth-sainfoin","family_url":"https:\/\/changelogs.core-directive.com\/reference\/flag.json"}