{"version":"2.1.120","anchor":"user-deny-rules-awareness-in-system-prompt","canonical_anchor":"user-deny-rules-awareness-in-system-prompt","heading":"User Deny Rules Awareness in System Prompt","tier":null,"area":null,"scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.120\/e\/user-deny-rules-awareness-in-system-prompt","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.120","markdown":"### User Deny Rules Awareness in System Prompt\n\n**What**\n\nClaude is now informed about the user's configured permission deny rules and instructed to block circumvention attempts.\n\n**Details**\n\n- The system prompt now includes a section listing all active deny rules\n- Claude is instructed to block actions that achieve the same effect via a different tool \u2014 e.g., using `python -c`, `sed -i`, `cat >`, heredocs, or similar to write a file that an Edit\/Write deny rule covers\n- Only non-internal deny rules are surfaced (rules starting with a specific internal prefix are filtered out)\n\n**Evidence**\n\nNew function builds deny rule text: `\"User Deny Rules: The user has configured these permission deny rules...\"` \u2014 search for `\"User Deny Rules\"`"}