Live charts
Binance perpetuals from one-second to weekly bars, with trend lines, rays, boxes, a ruler, open interest, funding and cumulative volume delta beside the price.
Crypto perpetuals · charting · backtesting
Charts and backtests you can believe.
Basilisk is a charting and strategy-testing tool for Binance USDT-M perpetuals. Live prices, fast indicators, your own strategy language, and backtests that always include fees, slippage and funding, so the result you see is closer to the result you would get.
No sign-up needed to look around. Works on desktop and phone.
What you can do today
Indicators, as many as you like
SMA, EMA, Bollinger, RSI, ADX, ATR, Parabolic SAR, Kalman, Hurst and more. Add several of the same indicator with different lengths. They are computed in Rust, so the chart stays smooth.
Your own strategy language
Write strategies in a small Rust-flavoured language: stops, targets, position sizing by risk, inputs you can change with a click, and autocomplete with inline help.
A visual strategy builder
Prefer not to write code? Connect boxes on a canvas: indicators into conditions into entries. It turns into a script you can read and edit.
Bar replay
Step through history one bar at a time, or play it back at speed, to see what you would have seen.
Parameter sweeps
Sweep one or two inputs and read the result off a heatmap. Big sweeps run in the background on the server, with progress you can pause and resume.
Built to not flatter you
Most backtests look better than trading feels. Basilisk is set up the other way round.
Costs are always on
Every result shows a realistic number (fees, slippage that grows with your size against the bar's volume, funding) next to a naive one without costs. Trust the first.
Held-out testing
When you optimise, the newest part of the data is kept out of the search, and the best setting is shown on it. A setting that only worked by luck stands out immediately.
Closed bars only
A bar that is still forming never enters a backtest, so the same run gives the same answer, and nothing repaints after the fact.
Desktop for building, phone for keeping an eye
On a computer
The full workspace: many indicators at once, drawing tools, the strategy editor, the diagram builder, bar replay and the optimiser.
On a phone
A layout of its own, not a squeezed copy: a market overview, one clean chart you can pinch and drag with a few indicators, and the results of your strategies. The app picks the right one automatically.