{"version":"2.1.215","anchor":"gault-kestrel-shortened-overwrite-caution-guidance-in-develo","canonical_anchor":"gault-kestrel-shortened-overwrite-caution-guidance-in-develo","heading":"Gault Kestrel \u2014 Shortened Overwrite Caution Guidance [In Development]","tier":null,"area":null,"scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.215\/e\/gault-kestrel-shortened-overwrite-caution-guidance-in-develo","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.215","markdown":"### Gault Kestrel \u2014 Shortened Overwrite Caution Guidance [In Development]\n\n**What**\n\nWhen the `tengu_gault_kestrel` flag is active (or `CLAUDE_CODE_GAULT_KESTREL` env var is set), the system-prompt caution about checking file contents before overwriting or deleting is shortened. Specifically, the phrase \"if what you find contradicts how it was described, or you didn't create it, surface that instead of proceeding\" is removed from the instruction.\n\n**Status**\n\nFeature-flagged \u2014 controlled by `CLAUDE_CODE_GAULT_KESTREL` \/ `tengu_gault_kestrel`. Only affects users who have this flag enabled.\n\n**Details**\n\n- The full existing instruction reads: \"Before deleting or overwriting, look at the target \u2014 if what you find contradicts how it was described, or you didn't create it, surface that instead of proceeding.\"\n- With the flag enabled it becomes: \"Before deleting or overwriting, look at the target.\" \u2014 the challenge-and-surface clause is dropped.\n- This likely experiments with whether the longer cautionary phrase causes Claude to be overly hesitant or to block legitimate operations.\n\n**Evidence**\n\nConditional omission of the surface-on-contradiction phrase, gated by `Y_c()` which checks `\"tengu_gault_kestrel\"` (search for `\"if what you find contradicts how it was described\"`)\n\n- Flag `tengu_gault_kestrel`: Off in both readings (read for one account on one subscription tier against v2.1.215; this account: off, anonymous baseline: off, compiled default: not a boolean we can read) These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release."}