# Permissions

Stud never takes action without your approval. Every file write, shell command, and Roblox operation goes through a transparent permission system.

## How it works

When Stud wants to perform an action that modifies your system — writing a file, running a shell command, or editing a script in Roblox Studio — it shows you exactly what it plans to do and asks for your approval.

△Stud wants to write to a file

←Write to src/server/PlayerData.lua

- MaxPlayers = 50,

+ MaxPlayers = 100,

Allow once   Allow always   Reject

## Permission types

### One-time approval

Approves the specific action being requested. Stud will ask again for similar actions in the future. This is the most conservative option.

### Session-wide approval

Approves this type of action for the rest of the session. For example, allowing "Write" always means Stud can write files without asking again until you restart.

### Deny the action

Blocks the action entirely. Stud will acknowledge the rejection and may suggest an alternative approach that doesn't require the denied permission.

## What requires permission?

Not every action requires approval. Stud distinguishes between read-only and write/execute actions:

#### ✓No approval needed

- → Reading files
- ✱ Searching files (Glob / Grep)
- ◆ Reading Roblox instances
- ◉ Spawning subagents

#### △Approval required

- ← Writing or editing files
- >\_ Running shell commands
- ◆ Modifying Roblox instances
- ◆ Editing scripts in Studio

## Best practices

1

#### Start conservative

Use "Allow once" until you're comfortable with how Stud operates. You can always switch to "Allow always" later.

2

#### Review diffs carefully

Stud shows you exactly what will change before writing. Take a moment to review the diff — it's your safety net.

3

#### Use git for backup

Commit your work before starting a Stud session. If anything goes wrong, you can always revert. Stud itself will suggest using git for safety.

### Next Steps

[Tools Reference →](/content/docs/tools/index.html) [Roblox Integration →](/content/docs/roblox/index.html)