Deflated Sharpe Python Packages

quant-harness

Honest backtest harness with a measured detector: leakage-safe CPCV, Deflated Sharpe, PBO, realistic costs, mechanical PASS/KILL verdict. Strategy audit CLI + verdict API.

falsify-quant

Adversarial backtest validation for trading strategies. Runs your parameter sweep so it knows the real trial count, then spends six tests trying to prove the result is noise: lookahead detection, cost breakeven, Deflated Sharpe, PBO, permutation, regime concentration.

nullbar

Pre-registration and honest statistics for trading research: trial ledgers, deflated Sharpe, clustered inference, leak detection, fill realism.

quant-integrity

Statistical tests for whether a backtest means anything: deflated Sharpe, PBO, purged CV, reality checks, attestation verification.