{"name":"tengu_precompute_compaction_setting_changed","slug":"tengu-precompute-compaction-setting-changed","family":"flag","title":"Feature flags","noun":"feature flag","description":"An analytics event, not a feature flag. Claude Code logs it when the `Precompute compaction` toggle in the settings list is changed, with the field `enabled`; the toggle (setting `precomputeCompactionEnabled`, shown as on when unset) appears only while the `tengu_sepia_moth` flag is on.","description_source":"code","described_by":{"bundle":"2.1.286","author":"claude-opus-5-5"},"presence":{"first_seen":null,"removed_in":null,"in_current_build":false,"newest_mined":"2.1.309","builds":0,"mined_builds":150,"first_cited":null},"aliases":[],"entries":[{"version":"2.1.179","anchor":"precompute-compaction-setting-gradual-rollout","heading":"Precompute Compaction Setting [Gradual Rollout]","line":null,"released_at":"2026-06-16 17:51:27","reason":"gate cited by this entry, found in this entry's text"}],"entries_total":1,"docs":[],"docs_total":0,"gates":[],"related":[{"name":"tengu_precomputed_compact_arm_gated","slug":"tengu-precomputed-compact-arm-gated","description":"Claude Code can reuse a precomputed conversation summary instead of compacting fresh, gated off"},{"name":"tengu_precomputed_compact_discarded","slug":"tengu-precomputed-compact-discarded","description":"A new `session.compact` plugin hook can intercept and rewrite conversation compaction"},{"name":"tengu_precomputed_compact_rehydrated","slug":"tengu-precomputed-compact-rehydrated","description":"Claude Code can reuse a precomputed conversation summary instead of compacting fresh, gated off"}],"url":"https:\/\/changelogs.core-directive.com\/reference\/flag\/tengu-precompute-compaction-setting-changed","family_url":"https:\/\/changelogs.core-directive.com\/reference\/flag.json"}