Create an interactive Plotly chart for a technical indicator on a symbol.
Arguments
Parse $ARGUMENTS as: indicator symbol exchange interval
$0= indicator name (e.g., ema, rsi, macd, supertrend, bbands, adx, stochastic, ichimoku, obv, vwap). Default: ema$1= symbol (e.g., SBIN, RELIANCE, NIFTY, AAPL). Default: SBIN$2= exchange (e.g., NSE, BSE, NFO, NSE_INDEX). Default: NSE. For US symbols use: YFINANCE$3= interval (e.g., D, 1h, 5m). Default: D
If no arguments, ask the user which indicator and symbol they want.
Instructions
- Read the indicator-expert skill rules for reference patterns
- Create
charts/{indicator_name}/directory if it doesn't exist (on-demand) - Create a
.pyfile incharts/{indicator_name}/named{symbol}_{indicator}_chart.py - Use the matching template from
rules/assets/{indicator}_chart/chart.pyas starting point (if available) - The script must:
- Load .env from project root using find_dotenv() - Fetch data via OpenAlgo client.history() (or yfinance for US symbols) - Normalize data: convert index to datetime, sort, strip timezone - Compute the indicator using openalgo.ta - Create a Plotly chart with template="plotly_dark" and xaxis_type="category" - Overlay indicators (EMA, Bollinger, Supertrend, Ichimoku) go on the candlestick panel - Subplot indicators (RSI, MACD, Stochastic, ADX, Volume, OBV) go below in separate panels - Use make_subplots for multi-panel layouts - Add horizontal reference lines where appropriate (RSI 30/70, Stochastic 20/80) - Print a plain-language explanation of the current indicator reading - Save chart as HTML: {symbol}_{indicator}_chart.html - Show chart with fig.show()
- Never use icons/emojis in code or output
Indicator Chart Types
Overlay Indicators (on candlestick panel)
| Indicator | Chart Type |
|---|---|
| ema, sma, wma, dema, tema, hma | Line overlay |
| bbands | Fill-between bands + midline |
| supertrend | Color-coded line (green=up, red=down) |
| ichimoku | 5 lines + cloud fill |
| keltner, donchian | Fill-between channels |
| sar | Dot markers above/below price |
| ma-envelopes | Upper/lower band lines |
Subplot Indicators (separate panel below)
| Indicator | Chart Type |
|---|---|
| rsi | Line + horizontal 30/70 zones |
| macd | Line + signal + histogram bars |
| stochastic | K% + D% lines + 20/80 zones |
| adx | DI+, DI-, ADX lines + 25 threshold |
| cci | Line + horizontal +100/-100 zones |
| williams_r | Line + -20/-80 zones |
| obv | Line (cumulative) |
| mfi | Line + 20/80 zones |
| volume | Bar chart (green/red by price direction) |
| atr | Line (volatility) |
Multi-Indicator Charts
If user asks for "multi" or multiple indicators, create a comprehensive multi-panel chart with:
- Row 1: Candlestick + EMA overlays
- Row 2: RSI(14)
- Row 3: MACD(12,26,9)
- Row 4: Volume bars
Signal Markers
If the indicator generates clear buy/sell signals (e.g., crossover, supertrend direction change), add triangle markers:
- Buy: green triangle-up markers
- Sell: red triangle-down markers
Data Periods
| Interval | Default Lookback |
|---|---|
| D | 1 year (365 days) |
| 1h | 6 months (180 days) |
| 15m, 30m | 3 months (90 days) |
| 5m | 1 month (30 days) |
| 1m | 7 days |
Plain-Language Explanation
After creating the chart, print a brief explanation:
SBIN — RSI(14) Analysis
Current RSI: 42.3
Interpretation: Neutral zone (between 30-70). Neither overbought nor oversold.
Trend: RSI has been declining from 65 over the past 5 bars, suggesting weakening momentum.Example Usage
/indicator-chart ema SBIN NSE D /indicator-chart rsi RELIANCE NSE D /indicator-chart macd AAPL YFINANCE D /indicator-chart supertrend NIFTY NSE_INDEX D /indicator-chart multi SBIN NSE D /indicator-chart bbands INFY NSE 1h