> ## Documentation Index > Fetch the complete documentation index at: https://docs.mkt-viper.com/llms.txt > Use this file to discover all available pages before exploring further. # Swing Failure Patterns > How to use the SFP Indicator Markets seek liquidity. Before a major reversal occurs, price often makes a final "jab" beyond a key high or low to trigger stop-losses and trap breakout traders. This is known as a **Liquidity Sweep** or **Swing Failure Pattern (SFP)**. The **Mkt-Viper SFP Engine** automates the detection of these specific traps. It monitors key Pivot Points (swing highs/lows) and alerts you immediately when price sweeps a level but fails to close beyond it. Image ### What is an SFP? An SFP can be a powerful reversal signal and tool to use for everyday trading. The engine looks for a very specific sequence of events that indicates a rejection: 1. **The Pivot:** The engine identifies a significant swing high or swing low from the past. 2. **The Sweep (Trap):** Current price wicks past that pivot level (triggering breakout buy orders or stop-loss sell orders). 3. **The Failure (Reversal):** The candle **Closes back inside** the previous range. * Bearish SFP: Price breaks the high, but closes below the old high. * Bullish SFP: Price breaks the low, but closes above the old low. ### Visual Indicators When a valid SFP is detected, the indicator draws a direct visual connection between the trap and the original level: * **Dotted Connection Line:** A dotted line connects the original Pivot High/Low to the current "Sweep" candle. This helps you instantly identify which level was just raided. * **SFP Label:** * **SFP (Green):** Bullish Swing Failure (Buying Opportunity). * **SFP (Red):** Bearish Swing Failure (Selling Opportunity).