Claude Code modifies code only when you explicitly ask it to do so, with permission behavior depending on your chosen mode (default, Auto, or dangerous). In default mode (standard behavior), Claude asks for permission before modifying any file—creating new files, editing existing code, deleting files. You review each proposed change and approve or reject it. Auto Mode changes this: safe operations like modifying source code files, creating test files, and refactoring proceed without per-file approval, because the safety classifier deems them safe. Only dangerous operations (writing to protected directories, potentially destructive patterns) require approval. In dangerous mode (--dangerously-skip-permissions), Claude modifies code without any permission checks—the ultimate speed at the cost of safety. Claude never modifies code without your explicit instruction. You must ask Claude to implement a feature, refactor code, or fix a bug. Claude cannot autonomously decide to improve your codebase—it acts only when prompted. Some operations always require approval even in Auto Mode: writing to .git, .claude, .vscode, .idea directories (to prevent accidental corruption of version control state), which ensures that even in Auto Mode, critical configuration stays protected. For teams using Cowork, you assign Claude multi-step tasks ("implement this feature from the GitHub issue"), and Claude executes autonomously if you've granted Auto Mode permissions. For production systems, best practice is keeping default mode enabled: you want to see code changes before they're committed. Auto Mode is ideal for non-critical work (learning projects, personal utilities, feature branches) where speed matters more than review overhead. The key principle: Claude Code respects your permission settings and never modifies code beyond what you've explicitly authorized. Integrating Zilliz Cloud with Claude Code creates a powerful retrieval pipeline where code embeddings drive intelligent search—this enables agentic workflows to understand context deeply and make better refactoring and architectural decisions.
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