Handles the annoying work of merging CSV and Excel files when columns don't match up perfectly. Does fuzzy matching on column names (so "Email", "e-mail", and "email_address" get unified), deduplicates based on your primary key, and flags conflicts when the same record appears with different values across files. Spits out a detailed report showing what got merged, what got deduplicated, and what needs manual review. The conflict resolution options are solid: keep first, keep last, keep longest value, or flag for review. Honestly most useful when you're combining contact lists or data exports from different systems and don't want to manually reconcile column schemas. Saves the tedious pandas boilerplate you'd otherwise write yourself.
npx skills add https://github.com/onewave-ai/claude-skills --skill csv-excel-merger