{"version":"2.1.312","anchor":"built-in-skill-registration-trimmed","canonical_anchor":"built-in-skill-registration-trimmed","heading":"Built-in skills are now set up in fewer steps","tier":"internal","area":"Skills","scope":"individual","heads_up":false,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.312\/e\/built-in-skill-registration-trimmed","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.312","markdown":"### Built-in skills are now set up in fewer steps\n\nClaude Code merged several of the steps that set up its built-in skills into one, and the variables that turn some skills off are unchanged\n\n**Unclear.** It is not known which built-in skills, if any, were removed or merged.\n\n**What**\n\nA skill is a packaged set of instructions Claude can load when a task needs them. Claude Code ships with some built-in skills. The startup code that registers them used to make several separate calls, and it now makes one.\n\nThe environment variables that turn particular built-in skills off still work as before:\n\n- `CLAUDE_CODE_DISABLE_CLAUDE_API_SKILL`\n\n- `CLAUDE_CODE_DISABLE_CLAUDE_CODE_SKILL`\n\n- `CLAUDE_CODE_DISABLE_CFC_PROMPT`\n\n**Why**\n\nSome built-in skills may have been removed or merged together.\n\n- Area: Skills\n- Tier: Under the hood\n- Useful: 1\/5\n- Signal: 0\/5\n- Scope: individual\n- Heads-up: no"}