A Claude Code plugin for AI-powered trading indicator development across TradingView (Pine Script), NinjaTrader (NinjaScript), and Tradovate (JavaScript).

Version: 1.0.0 | Author: Luther Barnum

This plugin provides 33 specialized commands, 10 AI agents, and 3 pattern libraries for developing trading indicators across three major platforms:

• Create new indicators with proper structure and conventions
• Convert indicators between platforms automatically
• Validate syntax against official documentation
• Debug runtime errors with platform-specific guidance
• Refactor code for better organization and performance
• Document indicators with auto-generated README files

# Clone the repository
git clone https://github.com/lgbarn/trading-indicator-plugins.git

# Add to Claude Code plugins
claude plugins add ./trading-indicator-plugins

claude plugins add github:lgbarn/trading-indicator-plugins

claude plugins list

You should see trading-indicators in the list.

/trading-indicators:pine:new-indicator MyVWAP --v6

/trading-indicators:pine:convert LB_MyVWAP.pine --to ninja

/trading-indicators:ninja:add-feature MyVWAPLB.cs "VWAP bands with 2SD"

/trading-indicators:tradovate:validate MyIndicatorLB.js

All three platforms share the same 11 commands. Invoke them using:

/trading-indicators:<platform>:<command> [arguments]

Where <platform> is pine, ninja, or tradovate.

Creates a new indicator with proper file structure, headers, and organization.

Pine Script:

/trading-indicators:pine:new-indicator SessionVWAP --v6

Creates LB_SessionVWAP.pine with Pine Script v6 structure.

NinjaScript:

/trading-indicators:ninja:new-indicator SessionVWAP

Creates SessionVWAPLB.cs with proper C# namespace and lifecycle methods.

Tradovate:

/trading-indicators:tradovate:new-indicator SessionVWAP

Creates SessionVWAPLB.js with proper exports and class structure.

Adds new functionality to an existing indicator file.

Supported Features:

• Price levels: VWAP bands, Initial Balance extensions, Pivot Points
• Visual elements: Labels, background shading, candle coloring
• Calculations: TWAP, standard deviation bands, session detection
• Interactivity: Alert conditions, feature toggles, theme switching

Example:

/trading-indicators:pine:add-feature LB_MyVWAP.pine "2SD and 3SD bands"

Converts an indicator from one platform to another.

Example - Pine to NinjaScript:

/trading-indicators:pine:convert LB_MyVWAP.pine --to ninja

Example - NinjaScript to Tradovate:

/trading-indicators:ninja:convert MyVWAPLB.cs --to tradovate

Automatic Mappings:

Checks indicator code against official platform documentation.

/trading-indicators:pine:validate LB_MyVWAP.pine

Checks include:

• Function signature correctness
• Deprecated function detection
• Version compatibility
• Resource limit compliance

Validates indicator structure and tests calculation correctness.

Structure validation:

/trading-indicators:ninja:test MyVWAPLB.cs --validate

Logic validation:

/trading-indicators:ninja:test MyVWAPLB.cs --logic

Tests include:

• Required sections present
• Input/parameter definitions
• Plot validity
• Edge case handling (first bar, zero volume, session boundaries)

Identifies and fixes runtime errors.

/trading-indicators:tradovate:debug MyIndicatorLB.js --error "undefined is not a function"

Common issues handled:

Analyzes and explains what an indicator does in plain language.

/trading-indicators:pine:explain LB_MyVWAP.pine

Output includes:

• Purpose summary
• Input documentation
• Calculation steps
• Trading interpretation
• Dependencies

Reorganizes code for better structure and performance.

Modes:

/trading-indicators:pine:refactor LB_MyVWAP.pine --organize    # Group inputs, organize sections
/trading-indicators:pine:refactor LB_MyVWAP.pine --modernize   # Update to latest syntax
/trading-indicators:pine:refactor LB_MyVWAP.pine --optimize    # Performance improvements
/trading-indicators:pine:refactor LB_MyVWAP.pine --cleanup     # Remove unused code

Compares two indicators or cross-platform versions.

Same platform:

/trading-indicators:pine:compare LB_MyVWAP_v1.pine LB_MyVWAP_v2.pine

Cross-platform:

/trading-indicators:pine:compare LB_MyVWAP.pine MyVWAPLB.cs --cross-platform

Removes unused variables, commented code, and fixes formatting.

/trading-indicators:ninja:cleanup MyVWAPLB.cs

Creates documentation from indicator code.

Markdown README:

/trading-indicators:pine:document LB_MyVWAP.pine --format md

Inline comments:

/trading-indicators:pine:document LB_MyVWAP.pine --format inline

The plugin includes scaffold patterns for each platform. Invoke them to get structure guidance:

/trading-indicators:pine-patterns
/trading-indicators:ninja-patterns
/trading-indicators:tradovate-patterns

• Input group structure (Feature Toggles, Settings, Colors)
• Session detection with timezone handling
• VWAP calculation with standard deviation bands
• Persistent state using var keyword
• Resource limit management

• Namespace and class structure
• Lifecycle methods (OnStateChange, OnBarUpdate)
• Property attributes with validation
• Series object initialization
• Drawing object patterns

• Class structure (init, map, filter)
• Module exports with params and plots
• History access patterns
• Session detection with tradeDate()
• Helper function initialization

The plugin provides 10 specialized AI agents:

User: Create a new Pine Script v6 indicator that calculates session VWAP
      with 1SD and 2SD bands for /ES futures

Claude: [Invokes /trading-indicators:pine:new-indicator SessionVWAP --v6]

        I'll create a new Pine Script v6 indicator with:
        - Session VWAP calculation with reset at RTH open (9:30 AM ET)
        - 1 and 2 standard deviation bands
        - Proper input groups for customization

        [Creates LB_SessionVWAP.pine]

User: Convert my VWAP indicator to NinjaTrader

Claude: [Invokes /trading-indicators:pine:convert LB_SessionVWAP.pine --to ninja]

        Converting with the following mappings:
        - close → Close[0]
        - ta.sma() → SMA()[0]
        - input.int() → [NinjaScriptProperty] int
        - session detection → Bars.IsFirstBarOfSession

        [Creates SessionVWAPLB.cs]

User: My NinjaScript indicator shows "Index was outside the bounds of the array"

Claude: [Invokes /trading-indicators:ninja:debug MyIndicatorLB.cs --error "Index outside bounds"]

        Root cause: Accessing Close[10] when CurrentBar < 10

        Fix: Add bar history check
        Before: double value = Close[10];
        After:  if (CurrentBar < 10) return;
                double value = Close[10];

All indicators developed with this plugin are optimized for:

• VWAP - Volume Weighted Average Price with standard deviation bands
• TWAP - Time Weighted Average Price for confirmation
• Initial Balance - First 30-60 minutes range
• Classic Pivots - Daily/weekly pivot levels

trading-indicator-plugins/
├── plugins/
│   └── trading-indicators/
│       ├── .claude-plugin/
│       │   └── plugin.json          # Plugin configuration
│       ├── agents/                  # 10 specialized agents
│       │   ├── pine-expert.md
│       │   ├── ninjascript-expert.md
│       │   ├── tradovate-expert.md
│       │   ├── converter.md
│       │   ├── code-reviewer.md
│       │   ├── debugger.md
│       │   ├── testing-agent.md
│       │   ├── documentation-generator.md
│       │   ├── performance-analyzer.md
│       │   └── doc-researcher.md
│       ├── commands/                # 33 commands (11 per platform)
│       │   ├── pine/
│       │   ├── ninja/
│       │   └── tradovate/
│       └── skills/                  # 3 pattern libraries
│           ├── pine-patterns/
│           ├── ninja-patterns/
│           └── tradovate-patterns/
└── README.md

All commands follow a consistent workflow:

1. Discussion First - Claude discusses the approach before generating code
2. Documentation Verification - Syntax verified against official docs
3. Approval Required - Changes presented for approval before implementation
4. No Auto-Commit - Users test and commit changes manually

• Claude Code CLI
• For development:
  • TradingView account (Pine Script)
  • NinjaTrader 8 (NinjaScript)
  • Tradovate account (JavaScript)

Contributions are welcome! Please:

1. Fork the repository
2. Create a feature branch
3. Submit a pull request

MIT License - See LICENSE file for details.

For issues or questions:

• Open an issue on GitHub
• Check the Claude Code documentation