Getting Started

Opening the Script Editor

Click the Script button in the chart toolbar. The editor panel opens at the bottom of the chart area with a Monaco-powered TypeScript editor.

Your First Script

Every script starts with a declaration — either indicator() or strategy():

indicator('My SMA', { overlay: true })

const len = input.int('length', 20, 'Length', { min: 2, max: 500 })
const src = input.source('source', 'close', 'Source')

const sma = ta.sma(src, len)
plot(sma, 'SMA', '#2962ff')

• indicator(name, opts) — declares an indicator. Set overlay: true to draw on the price chart, false for a sub-pane.
• strategy(name, opts) — declares a strategy with entry/exit signals and backtest stats.

Running Scripts

Press Ctrl+Enter (or click Run) to compile and execute. The script's name appears in the chart legend (next to the OHLC values) so you can adjust its settings or remove it.

Use console.log() for debug output — it prints to the browser console.

Saving Scripts

Press Ctrl+S (or click Save) to persist the current source to localStorage without running it. Scripts that were running when you last closed the page are automatically re-run on the next page load — no need to click Run again.

If a built-in template is selected when you Save, you'll be prompted to save it as a new user script.

Templates

Click the Templates dropdown in the editor toolbar to load pre-built examples:

• SMA Indicator — simple moving average overlay
• EMA Cross Strategy — entry/exit on EMA crossovers
• Bollinger Bands — upper/middle/lower bands with fill
• RSI Indicator — RSI in a sub-pane with overbought/oversold levels

Indicator vs Strategy

	Indicator	Strategy
Declaration	indicator(name, opts)	strategy(name, opts)
Purpose	Visual overlays & sub-pane studies	Entry/exit signals + backtesting
Output	plot(), fill(), hline(), bgcolor()	strategy.entry(), strategy.close()
Backtest stats	No	Yes — win rate, PnL, drawdown, Sharpe

Script Persistence

Scripts are saved to localStorage automatically. They persist across page refreshes. Use the editor's save/load controls to manage multiple scripts.