SENTINEL Trend
A free, open-source trailing trend line for TradingView. It is a SuperTrend, and we say so out loud. Copy it in and go: no subscription, no invite-only whitelist, no email, no paid account.
Why we give it away
Plenty of "proprietary one line" indicators are sold for a monthly fee. Most are a SuperTrend with a coat of paint. A trend line is free, public math, so here is a clean, non-repainting one with the source in plain sight. The full breakdown of how the paid versions probably work is in the MoneyLine teardown.
Add it in under a minute
- 1Copy the script. Hit "Copy script" on the code block below, or use Download to save the .pine file.
- 2Open TradingView’s Pine Editor. On any chart, open the "Pine Editor" tab at the bottom. A free TradingView account works fine; no paid plan needed.
- 3Paste, then Add to chart. Select-all in the editor, paste, and click "Add to chart." The green/red trend line appears on price. Save it to reuse on any chart.
- 4Optional: the two flip alerts. Right-click the chart, Add alert, condition "SENTINEL Trend", pick "Uptrend (flip up)" or "Downtrend (flip down)", and set it to "Once Per Bar Close."
The script
Loading the source…Pine v6, non-repainting, Mozilla Public License 2.0. The full source is right here: copy or download it above. Publishing to TradingView’s own library now requires a paid plan, which is exactly why we host it here, free.
What it does, and what it doesn't
One trailing line: green in an uptrend, red in a downtrend, flips on a confirmed close. Non-repainting, so history never moves. Optional Heikin-Ashi smoothing. Two alerts: flip up and flip down.
It is context, not an edge. A trend line tells you the regime; it does not tell you a trade has positive expectancy. In our own out-of-sample testing a bare flip did not survive costs. What mattered was gating it: a higher-timeframe trend filter, a not-overextended check, and real risk sizing. Treat it as decision support, not a forecast. Info only. Not financial advice.
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