claude-code_rails-upgrade-skill
Provides a Claude Code skill that assists with upgrading Ruby on Rails applications between versions by generating detection scripts, upgrade reports (with code examples), and previews of `rails app:update` configuration changes, using a sequential (no-skips) upgrade strategy and advising a dual-boot approach.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
Runs as a local Claude Code skill that generates scripts/reports; no explicit security controls are documented (no mention of secret handling, execution sandboxing, or safe command execution). Since it likely inspects a codebase and may generate shell scripts, caution is warranted around executing generated scripts and ensuring they do not inadvertently leak sensitive code/configuration or rely on unsafe shell behavior.
⚡ Reliability
Best When
You want an agent-driven, step-by-step Rails upgrade workflow and you can run the generated scripts against your codebase to produce actionable findings.
Avoid When
You need a fully automated code migration/refactor without manual review, or you lack the ability to run scripts and validate changes/test behavior after each step.
Use Cases
- • Plan and execute sequential Rails upgrades (e.g., 6.1 → 7.0)
- • Generate bash detection scripts to scan for Rails upgrade breaking changes
- • Produce detailed upgrade reports from findings produced by those scripts
- • Preview what `rails app:update` will change in configuration files
- • Guide upgrades using a deprecation-first approach before bumping Rails
Not For
- • Fully automated refactoring of application code (it provides guidance/examples, not automatic code changes)
- • Automating dependency conflict resolution for complex gem ecosystems (requires manual intervention)
- • Debugging cases involving monkeypatching/behavior changes without manual investigation
- • Providing end-to-end deployment/rolling deployment or canary-feature-flag strategies
- • Guaranteeing upgrade outcomes without running detection scripts and applying recommendations
Interface
Authentication
README describes local usage and installing the skill; no network API authentication or token-based access is mentioned.
Pricing
No pricing information in README; likely open-source skill run locally within Claude Code.
Agent Metadata
Known Gotchas
- ⚠ Skill output depends on running generated detection scripts and providing findings; without those inputs results may be incomplete.
- ⚠ Upgrade sequencing and dual-boot strategy are central; skipping steps or not validating behavior can lead to compounded issues.
- ⚠ Limitations include non-automatic refactoring and manual handling for complex dependency conflicts.
- ⚠ If gems or application code monkeypatch Rails internals, upgrades may require manual investigation beyond the skill’s guidance.
Alternatives
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Scores are editorial opinions as of 2026-03-30.