The company first unveiled a test version of auto mode in March, pitching it as a way to balance speed and control. As Anthropic explained in its announcement on Friday, when Claude Code is in auto mode, instead of presenting prompts asking for human approval at each step, it will proceed unless an action is determined to be 'irreversible, destructive, or aimed outside your environment.' Anthropic also said that in testing, auto mode proved safer than manual review ' in a study with 1,053 paid testers, auto mode caught 89% of harmful actions, while human review only caught 13.6%. (Perhaps that's because 'manual review can become habitual: users approve 97% of permission prompts in Claude Code.')
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