Algorithmic trading engine
An engine that backtests with realistic fills, validates through 20 days of paper trading, and uses on-board AI to review every trade before it touches your capital.
The pipeline
Strategies compete in realistic backtests with slippage, spread, and anti-gaming penalties. Only genuine edge survives.
Champions enter 20 days of paper trading against live market data. Performance degradation triggers automatic demotion.
An on-board LLM validates every trade thesis, checks market conditions, and returns a confidence score before execution.
Five authorization gates clear each order: conviction, concentration, drawdown, market regime, and AI approval.
Features
ADV-bucketed slippage, gap-through stops, and spread modelling. Anti-gaming penalties catch overfitted parameters.
Real market data validation. Strategies that degrade are automatically demoted before they touch your capital.
A local LLM reviews every trade thesis, validates market conditions, and provides confidence scores in the decision loop.
Run equities, crypto, and day trading independently. Each lane has its own champion, risk budget, and kill switches.
Runs on your Mac or Linux server. No cloud dependency. Your data, your keys, your infrastructure.
Browse, install, and publish community strategies. Full backtesting results and version history included.
Privacy
Constellation runs entirely on your hardware. Your API keys never leave your machine. Your trading data is never uploaded. There is no cloud dependency.
Free tier includes backtesting and the community strategy library.