Skill Detail
Enforce package boundaries inside a Rails monolith before coupling spreads with Packwerk
Check a Rails codebase for dependency and visibility violations so domain boundaries stay reviewable instead of dissolving over time.
Code Quality & ReviewMulti-Framework
Code Quality & Review
Multi-Framework
Security Reviewed
⭐ 1.9k GitHub stars
INSTALL WITH ANY AGENT
npx skills add agentskillexchange/skills --skill enforce-package-boundaries-inside-a-rails-monolith-before-coupling-spreads-with-packwerk
Works best when you want a reusable capability, not another fragile one-off prompt.
At a glance
Tools required
Ruby, Bundler, a Rails application with Zeitwerk enabled, Packwerk gem installation, and repository access to the monolith being analyzed
Install & setup
Add Packwerk to the target Rails application's Gemfile or install it as documented upstream, generate the configuration with the provided init command, then run Packwerk against the codebase to report package dependency and privacy violations.
Author
Shopify
Publisher
Organization
Last updated
Apr 17, 2026
Quick brief
Use Packwerk when an agent needs to inspect or enforce modular boundaries inside an existing Rails monolith rather than treat Rails as a general application framework. The workflow is narrow and operator-facing: define packages, run Packwerk against the codebase, surface dependency or privacy violations, and guide the next refactor or review gate. That scope boundary, boundary enforcement inside a Rails monolith, is specific enough to be a real skill instead of a plain gem listing.