Auto mode becomes the default permission mode for new Claude Code sessions on Pro, Max and Team plans on August 14, 2026.
In Anthropic's 1,053-action study, auto mode blocked 89% of harmful actions versus 13.6% caught by humans, who approved 97% of permission prompts habitually.
Auto mode still prompts for actions judged irreversible, destructive, or aimed outside your environment, and admins can pin a different default or disable it through managed settings.