Agents & InferenceSimon Willison

Auto mode is now the default in Claude Code for Pro, Max, and Team plans

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Summary A

Auto mode in Claude Code now blocks 89% of harmful actions that only 13.6% of humans caught in controlled tests. This shifts the default risk profile for production agents: you’ll ship with fewer accidental deletions or data leaks, but must still harden against the 11% of attacks auto mode misses—especially indirect prompt injections hidden in third-party packages or fetched dependencies. Expect fewer false positives from user fatigue, but audit every external package and network call as if it’s untrusted.