{"name":"tengu_prefix_break_hashes","slug":"tengu-prefix-break-hashes","family":"flag","title":"Feature flags","noun":"feature flag","description":"New sampled telemetry records detailed hashes around cache-prefix breaks.","description_source":"entry","described_by":{"version":"2.1.261","anchor":"new-telemetry-prefix-break-diagnostics-with-sampled-hashing"},"presence":{"first_seen":null,"removed_in":null,"in_current_build":false,"newest_mined":"2.1.322","builds":0,"mined_builds":161,"first_cited":{"version":"2.1.261","released_at":"2026-09-04 17:49:34","spans":1}},"aliases":[],"entries":[{"version":"2.1.261","anchor":"new-telemetry-prefix-break-diagnostics-with-sampled-hashing","heading":"New telemetry: prefix-break diagnostics with sampled hashing","line":"New sampled telemetry records detailed hashes around cache-prefix breaks.","released_at":"2026-09-04 17:49:34","reason":"found in this entry's text, named in this entry, gate cited by this entry"}],"entries_total":1,"docs":[],"docs_total":0,"gates":[],"related":[{"name":"tengu_prefix_ledger_notice","slug":"tengu-prefix-ledger-notice","description":"Prompt assembly can tell the model which prefix sites changed since an earlier render, but the mode is hardcoded off."}],"url":"https:\/\/changelogs.core-directive.com\/reference\/flag\/tengu-prefix-break-hashes","family_url":"https:\/\/changelogs.core-directive.com\/reference\/flag.json"}