Individual skill
backtest-expert
Expert guidance for systematic backtesting of trading strategies. Use when developing, testing, stress-testing, or validating quantitative trading strategies. Covers "beating ideas to death" methodology, parameter robustness testing, slippage modeling, bias prevention, and interpreting backtest results. Applicable when user asks about backtesting, strategy validation, robustness testing, avoiding overfitting, or systematic trading development.
skills/backtest-expert/SKILL.md
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SKILL.mdcore · 10,521 bytesSKILL.mdcore · 10,521 bytesreferences/failed_tests.mddoc · 7,826 bytesreferences/methodology.mddoc · 7,251 bytesrequirements.txtdoc · 70 bytesscripts/evaluate_backtest.pyruns · 22,722 bytesscripts/tests/conftest.pyruns · 690 bytesscripts/tests/test_evaluate_backtest.pyruns · 36,445 bytes
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# Backtest Expert
Systematic approach to backtesting trading strategies based on professional methodology that prioritizes robustness over optimistic results.
## Core Philosophy
**Goal**: Find strategies that "break the least", not strategies that "profit the most" on paper.
**Principle**: Add friction, stress test assumptions, and see what survives. If a strategy holds up under pessimistic conditions, it's more likely to work in live trading.
## When to Use This Skill
Use this skill when:
- Developing or validating systematic trading strategies