Wickra

Wickra is a streaming-first technical-indicators library. Every indicator is implemented in Rust as an O(1) state machine that consumes one input at a time, and the same engine is exposed through ergonomic bindings for Python, Node.js, WebAssembly, and Rust itself. The same update call you write inside a live trading loop also drives the historical backtest of that same strategy — there is no second code path that drifts behind the streaming one.

The project ships 295 indicators across nineteen families — moving averages, momentum oscillators, trend & directional, price oscillators, volatility & bands, bands & channels, trailing stops, volume, price statistics, Ehlers / cycle (DSP), pivots & S/R, DeMark, Ichimoku & charts, candlestick patterns, market profile, risk / performance, microstructure, and derivatives — plus a small set of supporting types (Candle, Tick, Chain). The Rust core forbids unsafe, so every binding inherits a memory-safe implementation. Install is one command on every supported platform: pip install wickra, cargo add wickra, npm install wickra — no system compilers, no C dependencies, no headers.

Wickra is licensed under the PolyForm Noncommercial 1.0.0 license. Personal projects, research, hobby trading bots, education, non-profits, and government use are all permitted; commercial sale of the software or of services built around it is not. If you want to use Wickra commercially, open an issue on GitHub to discuss a separate license.

Published versions

Registry	Package	Version
crates.io	`wickra`	0.4.5
crates.io	`wickra-core`	0.4.5
crates.io	`wickra-data`	0.4.5
PyPI	`wickra`	0.4.5
npm	`wickra`	0.4.5
npm	`wickra-wasm`	0.4.5

Release notes and tagged builds: https://github.com/wickra-lib/wickra/releases.

Wiki contents

Quickstart: Python — pip install wickra, a batch RSI on a NumPy array, a streaming RSI loop, and the multi-column NaN pattern that MACD and friends share.
Quickstart: Rust — cargo add wickra, batch and streaming via the Indicator and BatchExt traits, and the Chain combinator.
Quickstart: Node — npm install wickra, basic SMA and MACD calls, and the install surface.
Quickstart: WASM — npm install wickra-wasm, building with wasm-pack, and running indicators client-side in a browser or bundler.
Data Layer — the wickra-data crate: the CSV reader, the tick-to-candle aggregator, the multi-timeframe resampler, and the Binance live feed.
Streaming vs Batch — the conceptual difference between Wickra's O(1) update and the recompute-everything loops in batch-only libraries, with the benchmark numbers from the project README.
Warmup Periods — a verified table of every indicator's warmup_period(), plus the reasoning behind the off-by-one cases (RSI(14) needs 15 inputs because it needs 14 diffs).
Indicator Chaining — Chain::new(first, second) and .then(third), with a worked EMA(14) → RSI(7) example and the rule for stacked warmups.
Cookbook — copy-paste strategy recipes built on streaming indicators (RSI mean reversion, MACD crossover, Bollinger breakout, ADX-gated trend, multi-timeframe, SuperTrend trailing stop).
TA-Lib Migration — function-by-function mapping table from TA-Lib's talib.X(...) calls to the equivalent Wickra expressions.
FAQ — quick answers to the most common questions about warmup, NaN handling, thread safety, and the streaming-vs-batch contract.

Indicator reference

Start with Indicators-Overview for the full eighteen-family taxonomy with per-indicator formula / parameter / warmup tables. The links below are a quick alphabetical-by-family index into the 250 deep-dive pages.

Wickra ​

Published versions ​

Wiki contents ​

Indicator reference ​

Moving Averages (19) ​

Momentum Oscillators (20) ​

Trend & Directional (13) ​

Price Oscillators (11) ​

Volatility & Bands (18) ​

Bands & Channels (11) ​

Trailing Stops (12) ​

Volume (19) ​

Price Statistics (19) ​

Ehlers / Cycle (DSP) (16) ​

Pivots & S/R (7) ​

DeMark (12) ​

Ichimoku & Charts (2) ​

Candlestick Patterns (60) ​

Market Profile (3) ​

Risk / Performance (17) ​

Microstructure (13) ​

Derivatives (12) ​

See also ​

Wickra

Published versions

Wiki contents

Indicator reference

Moving Averages (19)

Momentum Oscillators (20)

Trend & Directional (13)

Price Oscillators (11)

Volatility & Bands (18)

Bands & Channels (11)

Trailing Stops (12)

Volume (19)

Price Statistics (19)

Ehlers / Cycle (DSP) (16)

Pivots & S/R (7)

DeMark (12)

Ichimoku & Charts (2)

Candlestick Patterns (60)

Market Profile (3)

Risk / Performance (17)

Microstructure (13)

Derivatives (12)

See also