{"name":"CLAUDE_CODE_CLIENT_KEY_PASSPHRASE","slug":"claude-code-client-key-passphrase","family":"env","title":"Environment variables","noun":"environment variable","description":"Passphrase for encrypted CLAUDE\\_CODE\\_CLIENT\\_KEY (optional)","description_source":"docs","described_by":{"doc":"claude-code\/env-vars","title":"Environment variables"},"presence":{"first_seen":"2.1.138","removed_in":null,"in_current_build":true,"newest_mined":"2.1.309","builds":150,"mined_builds":150,"first_cited":{"version":"2.1.232","released_at":"2026-08-13 21:30:53","spans":1}},"aliases":[],"entries":[{"version":"2.1.232","anchor":"mismatched-mtls-client-certificate-and-key-are-ignored-inste","heading":"Mismatched mTLS client certificate and key are ignored instead of installed","line":"A mismatched client certificate and key pair is now ignored and logged instead of installed.","released_at":"2026-08-13 21:30:53","reason":"found in this entry's text"},{"version":"2.1.232","anchor":"password-protected-client-keys-for-mtls","heading":"Password-protected client keys for mTLS","line":"Set `CLAUDE_CODE_CLIENT_KEY_PASSPHRASE` so an encrypted client key file works for mutual TLS.","released_at":"2026-08-13 21:30:53","reason":"named in this entry, found in this entry's text"},{"version":"2.1.198","anchor":"new-environment-variables","heading":"","line":null,"released_at":"2026-07-01 16:50:16","reason":"found in this entry's text"},{"version":"1.0.36","anchor":"mtls-mutual-tls-support","heading":"mTLS (Mutual TLS) Support","line":null,"released_at":"2025-06-27 17:07:11","reason":"found in this entry's text"}],"entries_total":4,"docs":[{"source":"claude-code","path":"env-vars","title":"Environment variables","documented":true},{"source":"claude-code","path":"monitoring-usage","title":"Monitoring","documented":false},{"source":"claude-code","path":"network-config","title":"Enterprise network configuration","documented":false}],"docs_total":3,"gates":[],"related":[{"name":"CLAUDE_CODE_CLIENT_KEY","slug":"claude-code-client-key","description":"Path to client private key file for mTLS authentication"}],"url":"https:\/\/changelogs.core-directive.com\/reference\/env\/claude-code-client-key-passphrase","family_url":"https:\/\/changelogs.core-directive.com\/reference\/env.json"}