NLPM lints, scores, fixes, and trend-tracks the natural-language artifacts that make up a Claude Code plugin — skills, agents, commands, rules, hooks, manifests — against a 50-rule rubric on a 100-point scale. Ships focused agents (scanner, scorer, checker, fixer, tester, security-scanner, vague-scanner, vocab-drift-scanner) and a standalone Python validator (bin/nlpm-check) that runs in pre-commit hooks and CI without Claude Code installed, plus a shields.io "Validated by NLPM" badge.