myskill

This skill appears to be what it says: a simple CSV deduper implemented in Python with no network access and no credential requirements. Before installing or running: (1) review and back up your CSVs — the script overwrites only the output file you specify and could cause data loss if used incorrectly; (2) note the script loads the entire file into memory (may be memory-heavy for very large CSVs); (3) the script will exit if a specified key column is missing, and it lowercases keys only when --case-insensitive is used; (4) encoding errors are replaced (errors='replace'), which can alter problematic characters; (5) if you need streaming/disk-based deduplication for huge files, consider a tool designed for that. Otherwise the code is straightforward and contains no hidden network calls, obfuscated logic, or unexpected credential access.