veto studio

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Syntax

veto studio [options]
veto              # Shorthand (launches studio by default)

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Description

• Real-time policy editing with live validation
• Coverage visualization showing which tools have rules
• Decision preview for testing tool calls
• Rule management with create/edit/delete operations
• Workspace discovery for multi-package monorepos

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Options

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Renderer Selection

--renderer <mode>

• auto - Automatically select best renderer (default)
• ink - React-based renderer (best for most terminals)
• ansi - Lightweight ANSI fallback
• opentui - Experimental modern renderer

veto studio --renderer ink

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Theme Selection

--theme <name>

• veto - Default Veto theme
• claude - Claude-inspired theme
• high-contrast - High contrast for accessibility

veto studio --theme high-contrast

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Workspace Directory

--directory <path>

veto studio --directory ./packages/sdk

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Scan Options

--include-examples

--include-tests

veto studio --include-examples --include-tests

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Demo Mode

--demo-template

veto studio --demo-template

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Examples

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Launch Studio (Default)

veto

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Launch with Specific Renderer

veto studio --renderer ansi

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Open Specific Workspace

veto studio --directory ./packages/backend

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Custom Theme

veto studio --theme claude

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Include Test Files in Scan

veto studio --include-tests --include-examples

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Studio Navigation

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Workspace View

Veto Studio v1.16.2

Select workspace:
  > my-agent-app/
    packages/sdk/
    packages/cli/

[Enter] Select  [q] Quit

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Main View

Veto Studio - my-agent-app

Coverage: 8/12 tools (66.7%)

Discovered Tools:
  ✓ transfer_funds         [COVERED]
  ✓ approve_invoice        [COVERED]
  ✗ send_email             [UNCOVERED]
  ✗ execute_shell_command  [UNCOVERED]

Commands:
  [g] Generate policy  [c] Check guard  [s] Scan  [r] Reload  [q] Quit

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Key Bindings

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Renderer Comparison

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Ink Renderer (Recommended)

veto studio --renderer ink

• React-based, smooth updates
• Best terminal compatibility
• Rich layout support

• Larger bundle size
• Requires full terminal support

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ANSI Renderer (Fallback)

veto studio --renderer ansi

• Lightweight
• Works in limited terminals
• Fast startup

• Basic layout only
• Less visual feedback

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OpenTUI Renderer (Experimental)

veto studio --renderer opentui

• Modern architecture
• Future feature support

• Experimental, may have bugs
• Limited compatibility

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Workflows

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Generate a Policy

1. Launch Studio: veto studio
2. Navigate to an uncovered tool
3. Press g to generate
4. Enter natural language prompt
5. Review generated YAML
6. Save to file

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Test a Tool Call

1. Launch Studio: veto studio
2. Press c to check guard
3. Enter tool name
4. Enter arguments as JSON
5. See decision (allow/block/require_approval)

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Review Coverage

1. Launch Studio: veto studio
2. Main view shows coverage percentage
3. Scroll through tool list
4. Green checkmarks = covered
5. Red X = uncovered

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Troubleshooting

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Studio Won’t Launch

# Check Node version (must be >= 20)
node --version

# Try ANSI fallback
veto studio --renderer ansi

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Rendering Issues

# Check terminal size
tput cols  # Should be >= 80
tput lines # Should be >= 24

# Try different renderer
veto studio --renderer ansi

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Workspace Not Detected

# Manually specify directory
veto studio --directory ./path/to/workspace

# Check for package.json or pyproject.toml
ls package.json pyproject.toml

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Slow Performance

# Exclude test/example directories
veto studio  # (default excludes tests/examples)

# Use ANSI renderer
veto studio --renderer ansi

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Environment Variables

# Cloud mode
VETO_API_KEY=your-key-here

# Force renderer
VETO_RENDERER=ansi

# Force theme
VETO_THEME=high-contrast

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Legacy REPL Mode

veto studio --legacy

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Next Steps

• Generate Policies - Create policies from natural language
• Guard Check - Test tool calls against rules
• Scan Coverage - Audit tool coverage headlessly
• Policy Apply - Deploy policies to cloud