04 — Quiz: permissions

Pick an answer. The quiz checks it and shows the explanation.

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1. Your rules are "deny": ["Bash(aws *)"] and "allow": ["Bash(aws s3 ls)"]. Claude runs aws s3 ls. What happens?

a) it runs: the allow rule is more specific

b) it's blocked: deny is checked first, and specificity doesn't matter

c) you get a prompt

d) the mode decides

b — deny, then ask, then allow. The first match wins, so the broad deny wins.

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2. Your user settings deny Read(./.env). A project's .claude/settings.json allows it. Can Claude read .env in that project?

a) yes: project settings override user settings

b) no: a deny in any settings file can't be allowed by another

c) only after a restart

d) only in bypassPermissions

b — permission lists merge across files, and a deny at any level holds.

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3. You deny Read(./.env). Claude then runs grep -r API_KEY . with Bash. What decides whether that runs?

a) the Read deny blocks it

b) Bash rules and the mode: a Read rule doesn't cover that command

c) the model's own judgment

d) nothing: Bash always runs

b — Read rules cover the file tools and Bash commands that name the file, like cat .env. A grep -r that doesn't name it isn't covered. Use the sandbox to stop every process from reading a file.

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4. You put "defaultMode": "bypassPermissions" in a project's .claude/settings.json. What happens at the next start?

a) the session starts in bypass mode

b) Claude Code refuses to start

c) it's ignored: that mode can't be set as default from a project file

d) it starts in plan mode

c — auto and bypassPermissions as defaultMode take effect only from user or managed settings. Here the session starts in Manual mode.

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5. You use auto mode and have an ask rule Bash(git push *). Claude wants to push. What happens?

a) the classifier decides alone

b) it runs: auto mode runs everything

c) you get a prompt: explicit ask rules still prompt in auto mode

d) it's denied

c — auto mode adds background checks, but your ask rules keep their prompt.

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