La Siren is the still surface over deep water — the execution layer. She takes a strategy's signal, routes it, and records the fill. By default she runs in paper mode: she simulates, so you learn the water before you ever risk real funds.
A strategy fires on TradingView, the alert posts to a secured webhook, and La Siren turns it into a recorded paper fill — so you can watch a strategy's real behavior, and your own, before going live.
La Siren's live scoreboard — equity, P&L over time, and every recorded fill. Read-only. She shows; she never moves your funds.
| Market | Side | Size | Entry | Mark | Unrealized |
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| Time | Market | Side | Size | Price | P&L |
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A Pine strategy's alert posts a signed JSON payload — with your secret token — to La Siren's webhook. A mismatched token is rejected; only your alerts are honored.
In paper mode she models the swap at live prices and records a fill — entry, size, and timestamp — without touching a single real coin.
Every paper fill updates your scoreboard: win-rate, running P&L, and drawdown — so a strategy proves itself on reps, not on hope.
La Siren never gives advice and never decides for you. She shows what a strategy does; the judgment, and any decision to ever go live, stays yours.