Permission Mode
beginnerDefinition
The Claude Code setting that decides how much Claude may do without asking you first, from asking before every edit, to editing freely, to only planning; press Shift+Tab to switch between them.
In the wild
You keep Claude in plan mode until the plan for the newsletter signup looks right, then press Shift+Tab to let it make the edits without asking about each file.
More from Claude Code
--plugin-dir
A Claude Code launch option that loads a plugin straight from a folder on your computer for one session, so you can try it while you're still building it.
@-mention (File Reference)
Typing @ followed by a file's name in a Claude Code prompt to point Claude at that exact file, so it doesn't have to search for it.
Agentic Loop
The repeating cycle Claude Code works in: look around the project, take one step such as editing a file or running a command, check what happened, and decide the next step until the task is done.
Checkpoint (/rewind)
A restore point Claude Code saves before each edit Claude makes, so you can run /rewind (or press Esc twice) to go back to an earlier moment. It only tracks Claude's own file edits, so it doesn't replace Git.
CLAUDE_PLUGIN_ROOT
A placeholder, written `${CLAUDE_PLUGIN_ROOT}`, that Claude Code swaps for the folder a plugin is installed in, so the plugin's file paths work on everyone's computer. That folder changes with each update, so anything the plugin needs to keep goes in `${CLAUDE_PLUGIN_DATA}` instead.
CLAUDE.md
A notes file in your project that Claude Code reads at the start of every session, holding the rules and commands you'd otherwise repeat in every prompt (/init writes a starter version).