{"name":"tengu_lucid_anchor","slug":"tengu-lucid-anchor","family":"flag","title":"Feature flags","noun":"feature flag","description":"Adding tools mid-conversation can still force a session reset, gated by an unread flag","description_source":"entry","described_by":{"version":"2.1.268","anchor":"tool-additions-mid-conversation-tether-reset-gated-by-tengu"},"presence":{"first_seen":"2.1.268","removed_in":null,"in_current_build":true,"newest_mined":"2.1.322","builds":50,"mined_builds":161,"first_cited":{"version":"2.1.268","released_at":"2026-09-10 18:41:11","spans":1}},"aliases":[],"entries":[{"version":"2.1.269","anchor":"tether-thread-continuation-requests-can-omit-system-prompt","heading":"'Tether' thread-continuation requests can omit system prompt\/tools when continuing, behind two off-by-default flags, with a fingerprint-mismatch circuit breaker","line":"Continuing a server-side conversation thread can now skip resending the system prompt and tools list, with a fallback if the server disagrees","released_at":"2026-09-11 18:12:49","reason":"gate cited by this entry"},{"version":"2.1.268","anchor":"tool-additions-mid-conversation-tether-reset-gated-by-tengu","heading":"Tool-additions mid-conversation tether reset gated by tengu_lucid_anchor","line":"Adding tools mid-conversation can still force a session reset, gated by an unread flag","released_at":"2026-09-10 18:41:11","reason":"gate cited by this entry, found in this entry's text"}],"entries_total":2,"docs":[],"docs_total":0,"gates":[{"version":"2.1.269","state":"unknown","account":null,"baseline":null,"code_default":false},{"version":"2.1.268","state":"unknown","account":null,"baseline":null,"code_default":false}],"related":[{"name":"tengu_lucid_bittern","slug":"tengu-lucid-bittern","description":"Behaviour that followed one remote switch is now split: part of it moves to a new switch, and both stay off by default"}],"url":"https:\/\/changelogs.core-directive.com\/reference\/flag\/tengu-lucid-anchor","family_url":"https:\/\/changelogs.core-directive.com\/reference\/flag.json"}