Use when invalid data causes failures deep in execution, requiring validation at multiple system layers - validates at every layer data passes through to make bugs structurally impossible
/plugin marketplace add samjhecht/wrangler/plugin install wrangler@samjhecht-pluginsThis skill inherits all available tools. When active, it can use any tool Claude has access to.
Build robust backtesting systems for trading strategies with proper handling of look-ahead bias, survivorship bias, and transaction costs. Use when developing trading algorithms, validating strategies, or building backtesting infrastructure.