Claude Code is not just chat with coding knowledge. It combines the model with filesystem access, terminal commands, Git context and project tools.
- Filesystem: Claude can inspect real project files.
- Terminal: Claude can run tests, scripts and searches.
- Git: Claude can inspect diffs and work in branches.
- Instructions: CLAUDE.md can preserve project-specific operating rules.
Tip: The advantage is not that Claude can type code. The advantage is that it can investigate the existing system before changing it.