instibrain
instibrain  /  guides  /  claude basics  /  lesson 6
lesson 6 of 7 · claude basics

Permissions.

Permissions decide what Claude may do without asking you first.

new words

Permission mode
One setting for the whole session. The line under the prompt shows it.
Permission prompt
A question from Claude before one action. You answer yes or no.

the lesson

Line under the promptWhat Claude does without asking
⏵⏵ auto mode onEverything. A second model checks each step and blocks risky ones. A new session starts here.
⏸ manual mode onOnly reading. It asks before every edit and command.
⏵⏵ accept edits onReading and editing files. It asks before other commands.
⏸ plan mode onOnly reading. It writes a plan and waits for your yes.

Press Shift + Tab to move to the next mode.

When Claude asks, read the action before you answer. "Yes, and don't ask again" saves a rule, so Claude stops asking about that action.

In auto mode, say your limits in plain words, like "do not send anything". Auto mode then blocks matching actions. A limit said only in chat can be lost when the chat is summarized.

Esc twice on an empty prompt opens a menu that undoes Claude's changes to files on your computer. Nothing undoes what left your computer: a sent message, a published page, a change in another app.

The four modes you reach with Shift + Tab.

try it

Click in your Claude window. Press Shift + Tab four times, slowly.

you should see

  • The line under the prompt changes to manual mode on, then accept edits on, then plan mode on, then auto mode on again.