Auto Mode

Auto Mode is an operating mode within Claude Code that executes actions without prompting the user for permission on each individual step, replacing the earlier Plan Mode as the preferred workflow for at least some Claude Code users and developers.

What Auto Mode Does

Auto Mode streamlines the Claude Code experience by eliminating per-action permission prompts. Boris Cherny describes having fully switched to it: "What they used to be is plan mode. I don't use that anymore. I use auto mode" — Reflecting on a year of Claude Code, 10:53. He uses it universally: "I use auto mode for everything" — 10:53.

The Safety Argument for Auto Mode

A counterintuitive claim is made about Auto Mode's safety profile: rather than being riskier due to fewer prompts, it may actually be safer precisely because of that reduction. The argument holds that users being spammed with permission requests that are "99% yes" causes attention fatigue, meaning they stop reading carefully and miss the rare genuinely important prompt. By removing noise, Auto Mode keeps users focused on what actually matters: "we feel that auto mode is more safe than reading every single permission prompt" — 13:27.

Security and Red Teaming

Auto Mode has been subject to adversarial testing. Red Teaming|Red teamers were brought in specifically to attempt prompt injection attacks and attempts to compromise codebases operating under Auto Mode, and the results were used to create evals: "we got red teamers and we asked them to try to prompt inject and try to hack uh the codebase and we used this to create evals" — 15:22. This suggests the Claude Code team treats Auto Mode's expanded permissions as a meaningful attack surface warranting dedicated security evaluation.

Relationship to Plan Mode

Auto Mode is positioned as the direct successor to Plan Mode in practice, at least for Boris Cherny's workflow. Plan Mode involved more explicit planning steps before execution; Auto Mode collapses this into a more continuous, autonomous operation flow.