A Free Claude Skill That Argues With Your Backtest

Free Claude skill built from 71 quant finance papers.

It does three things general AI knowledge does badly:

  1. Cites the page for every number. Buffett's realized Sharpe over
    40 years was 0.79. That is the reference point most backtests
    need and never get.
  2. Runs the tests people skip. Deflated Sharpe, probability of
    backtest overfitting, purged cross-validation, factor attribution
    against live Ken French data.
  3. Takes a side where the literature disagrees, and says what would
    change its mind.

You can find it here.

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