Crosstabs

You'd reach for this when you need to run statistical analysis on categorical data directly from Claude. It handles crosstabulation with the standard battery of tests: chi-square for independence, Fisher's exact test for small samples, odds ratios for 2x2 tables, and common effect size measures. The stdio transport keeps it lightweight. Useful when you're working with survey data, A/B test results, or any contingency table analysis and want to skip the roundtrip to R or Python. It's the crosstabs-lite package under the hood, so expect the core statistical functions without heavy dependencies.