Start from a structure, or build from scratch. Pick strikes off the live chain, set your profit target and stop-loss, back-test on real data, then run it in paper or live. Nothing trades until you start it.
Start from a structure
A starting point, not a recommendation. Applying one fills the legs below — every leg stays editable.
The sketch on each card is the shape of its payoff at expiry — profit above the dotted line, loss below. It is drawn to illustrate the structure only: it has no scale, uses no market prices, and is not an estimate of any outcome.
Basics
No chain available for NIFTY.
Payoff at expiry
Pick strikes with B / S in the option chain above — the payoff prices off real premiums.
Legs
B/S
Expiry
Strike
Lots
Qty
Premium
Delta
Value
CE · by offset (5) — strike set at entry
65
—
—
—
Lot size 65
Net delta 0
₹0
Leg setup
How each leg picks its strike. Lots, live premium and removing a leg are in the Legs table beside the payoff above — this card is only the selection rule. ATM is the strike nearest spot; OTM+1 is one strike further out. A same-type BUY leg against a SELL caps your loss.
Naked short — loss is open-ended. Add a same-type BUY leg to cap it.
Lot size 65 · strike step 50
Estimated margin required (rough — not your broker's real number)
Loading spot price…
A rough platform-side estimate, not a broker margin call. Delta/premium-picked strikes assume ATM spacing here since the real strike isn't known until entry.
Indicators
These are the indicators the engine actually computes. Give each one an id, then use it in your entry rule below.
Entry
Enter on an indicator condition, or simply at a set time. Positional structures like a ratio spread are defined by WHEN they go on, not by a bar pattern.
Profit target & stop-loss
Measured on the option premium. The square-off time always runs, even if neither is hit.
Advanced — trailing stop and re-entry
Back-test, save, and run
Back-test runs on real historical data for the saved definition. Paper runs the same rules live without money. Live requires a connected broker, a free slot and an assigned egress IP.
Back-test and run both save the strategy for you first — you do not have to save it yourself. Paper and live are independent: you can go straight to live.
Rapfin automates strategies you choose. It does not give advice or recommend trades.