navi-stream_skill

Overview

This skill is a Navi Stream language expert for writing quantitative trading indicators and technical analysis scripts in .nvs files. It helps you design real-time streaming indicators, access OHLC market data, and produce chart-ready outputs with built-in plotting and export support. Use it to speed up development of efficient, low-latency indicator code optimized for tick-by-tick processing.

How this skill works

The skill inspects .nvs source and guides on metadata, parameter declaration, ta and quote module usage, plotting, and exporting indicator outputs. It explains time-series indexing, built-in technical functions (ema, ma, count, barslast, etc.), array/state handling, and integration patterns for calling .nvs modules from Navi programs. It also highlights performance and parameter-range best practices for streaming calculations.

When to use it

• Building or reviewing .nvs indicator scripts (MACD, RSI, Bollinger, etc.)
• Implementing real-time streaming calculations that run per tick or candle
• Accessing and manipulating OHLC, volume, and timestamp fields from quote module
• Creating chart-ready outputs with plots, shapes, and text annotations
• Integrating indicators into Navi programs that feed candlestick data

Best practices

• Declare metadata and parameters up front; use @meta to document ranges and UI labels
• Cache repeated calculations in local variables instead of calling functions twice
• Use export for outputs you want shown on charts and return values when called from Navi
• Keep stateful arrays and bar-confirmation logic minimal to preserve streaming performance
• Use clear naming: parameters CamelCase or snake_case, internal vars snake_case, exports lowercase

Example use cases

• Implement MACD with ema(close, 12/26) and exported macd, hist, signal outputs
• Create a multi-period trend alignment indicator using short/mid/long EMAs
• Detect breakouts by comparing close to prior N-period highs and draw visual annotations
• Build divergence detectors by comparing price lows with indicator lows using barslast/dllv
• Integrate an .nvs indicator into a Navi program that feeds tick-by-tick candlesticks