{"version":"2.1.251","anchor":"a-new-environment-variable-name-is-recognised-but-never-read","canonical_anchor":"a-new-environment-variable-name-is-recognised-but-never-read","heading":"A new environment variable name is recognised but never read","tier":"soon","area":"Environment Variables","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.251\/e\/a-new-environment-variable-name-is-recognised-but-never-read","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.251","markdown":"### A new environment variable name is recognised but never read\n\nA new auth-adjacent variable name is listed but nothing in this build reads it.\n\n**What**\n\nThe list of environment variable names Claude Code treats as auth-adjacent gained `CLAUDE_CODE_ARG_KEY_SHAPE`. Unlike the other names in that list, nothing else in this build reads or writes it, so setting it changes nothing today.\n\n**Evidence**\n\n`CLAUDE_CODE_ARG_KEY_SHAPE`\n\n- Area: Environment Variables\n- Names: `CLAUDE_CODE_ARG_KEY_SHAPE`\n- Tier: Nothing to try yet\n- Useful: 1\/5\n- Signal: 4\/5\n- Present in the build but not switched on"}