Harmonic Patterns signal engine. Identifies XABCD five-point structures such as Gartley/Bat/Butterfly/Crab based on Fibonacci geometry, and generates trading signals in the PRZ (Potential Reversal Zone).
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Added May 30, 2026
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---
name: harmonic
description: Harmonic Patterns signal engine. Identifies XABCD five-point structures such as Gartley/Bat/Butterfly/Crab based on Fibonacci geometry, and generates trading signals in the PRZ (Potential Reversal Zone).
category: strategy
---
# Harmonic Patterns
## Purpose
The Fibonacci geometry school uses precise ratio relationships to identify price patterns:
| Pattern | B-Point Retracement | D-Point Retracement | Direction |
|------|---------|---------|------|
| Gartley | 0.618 XA | 0.786 XA | Reversal |
| Bat | 0.382-0.5 XA | 0.886 XA | Reversal |
| Butterfly | 0.786 XA | 1.27 XA | Reversal |
| Crab | 0.382-0.618 XA | 1.618 XA | Reversal |
## Core Concepts
- **XABCD five-point pattern**: a price structure defined by precise Fibonacci ratios
- **PRZ (Potential Reversal Zone)**: the convergence area around point D, where reversal probability is high
- Bullish pattern (point D at the bottom) → buy signal
- Bearish pattern (point D at the top) → sell signal
## Dependencies
```bash
pip install pyharmonics pandas numpy requests
```
## Parameters
| Parameter | Default | Description |
|------|--------|------|
| is_stock | False | Whether the instrument is a stock (affects analysis parameters) |
## Signal Convention
- `1` = long, `-1` = short, `0` = stand aside
