{"version":"2.1.223","anchor":"investigate-first-system-prompt-experiment-removed","canonical_anchor":"investigate-first-system-prompt-experiment-removed","heading":"\"Investigate first\" system prompt experiment removed","tier":"notice","area":"System Prompt","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.223\/e\/investigate-first-system-prompt-experiment-removed","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.223","markdown":"### \"Investigate first\" system prompt experiment removed\n\nClaude no longer spends up to a minute investigating before asking you a clarifying question.\n\n**What**\n\nThe experiment that told Claude to spend up to a minute on read-only investigation before asking a clarifying question has been taken out entirely.\n\n**Details**\n\n- Gone: the `CLAUDE_CODE_INVESTIGATE_FIRST` environment variable, the `tengu_slate_harrier` gate, and its prompt-cache entry.\n- The shortened \"compact\" variant of the \"Executing actions with care\" block was removed too.\n- Only the full-length version of that block remains.\n\n**Evidence**\n\n`# Executing actions with care`\n\n- Flag `tengu_slate_harrier`: Not enough to say (read for one account on one subscription tier against v2.1.223; this account: no value returned, anonymous baseline: no value returned, 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.\n- Area: System Prompt\n- Names: `CLAUDE_CODE_INVESTIGATE_FIRST`\n- Tier: You'll notice\n- Useful: 3\/5\n- Signal: 0\/5"}