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rails-upgrade
Analyzes Rails applications and generates comprehensive upgrade reports with breaking changes, deprecations, and step-by-step migration guides for Rails 2.3 through 8.1. Use when upgrading Rails applications, planning multi-hop upgrades, or querying version-specific changes. Base
Overview
Analyzes Rails applications and generates comprehensive upgrade reports with breaking changes, deprecations, and step-by-step migration guides for Rails 2.3 through 8.1. Use when upgrading Rails applications, planning multi-hop upgrades, or querying version-specific changes. Based on FastRuby.io methodology and "The Complete Guide to Upgrade Rails" ebook.
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Rails Upgrade Assistant Skill
Skill Identity
- Name: Rails Upgrade Assistant
- Purpose: Intelligent Rails application upgrades from 2.3 through 8.1
- Skill Type: Modular with external workflows and examples
- Upgrade Strategy: Sequential only (no version skipping)
- Methodology: Based on FastRuby.io upgrade best practices and "The Complete Guide to Upgrade Rails" ebook
- Attribution: Content based on "The Complete Guide to Upgrade Rails" by FastRuby.io (OmbuLabs)
Dependencies
- dual-boot skill (github.com/ombulabs/claude-code_dual-boot-skill) — Sets up and manages dual-boot environments using the
next_railsgem. Covers setup,NextRails.next?code patterns, CI configuration, and post-upgrade cleanup. Must be installed for Step 2 of the upgrade workflow. - rails-load-defaults skill (github.com/ombulabs/claude-code_rails-load-defaults-skill) — Handles incremental
load_defaultsupdates with tiered risk assessment (Tier 1: low-risk, Tier 2: needs codebase grep, Tier 3: requires human review). Used as the final step after the Rails version upgrade is complete.
Core Methodology (FastRuby.io Approach)
This skill follows the proven FastRuby.io upgrade methodology:
- Incremental Upgrades - Always upgrade one minor/major version at a time
- Assessment First - Understand scope before making changes
- Dual-Boot Testing - Test both versions during transition using
next_railsgem - Test Coverage - Ensure adequate test coverage before upgrading (aim for 80%+)
- Gem Compatibility - Check gem compatibility at each step using RailsBump
- Deprecation Warnings - Address deprecations before upgrading
- Backwards Compatible Changes - Deploy small changes to production before version bump
Key Resources:
- DELEGATE to the
dual-bootskill for dual-boot setup withnext_rails(see Dependencies) - See
references/deprecation-warnings.mdfor managing deprecations - See
references/staying-current.mdfor maintaining upgrades over time
CRITICAL: Dual-Boot Code Pattern with NextRails.next?
When proposing code fixes that must work with both the current and target Rails versions (dual-boot), always use NextRails.next? from the next_rails gem — never use respond_to? or other feature-detection patterns.
DELEGATE to the dual-boot skill for:
- Setup and initialization (
next_rails --init,Gemfile.next) NextRails.next?code patterns and examples- CI configuration for dual-boot testing
- Post-upgrade cleanup (removing dual-boot branches)
DEPENDENCY: Requires the dual-boot skill
Trigger Patterns
Claude should activate this skill when user says:
Upgrade Requests:
- "Upgrade my Rails app to [version]"
- "Help me upgrade from Rails [x] to [y]"
- "What breaking changes are in Rails [version]?"
- "Plan my upgrade from [x] to [y]"
- "What Rails version am I using?"
- "Analyze my Rails app for upgrade"
- "Find breaking changes in my code"
- "Check my app for Rails [version] compatibility"
Specific Report Requests:
- "Show me the app:update changes"
- "Preview configuration changes for Rails [version]"
- "Generate the upgrade report"
- "What will change if I upgrade?"
Upgrade Cleanup Requests (delegate to the upgrade-cleanup plugin):
- "Finish the upgrade"
- "Clean up after my Rails upgrade"
- "Remove the dual-boot setup"
- "Drop the NextRails branches"
- "We're done upgrading to Rails [version]"
CRITICAL: Sequential Upgrade Strategy
⚠️ Version Skipping is NOT Allowed
Rails upgrades MUST follow a sequential path. Examples:
For Rails 5.x to 8.x:
5.0.x → 5.1.x → 5.2.x → 6.0.x → 6.1.x → 7.0.x → 7.1.x → 7.2.x → 8.0.x → 8.1.x
You CANNOT skip versions. Examples:
- ❌ 5.2 → 6.1 (skips 6.0)
- ❌ 6.0 → 7.0 (skips 6.1)
- ❌ 7.0 → 8.0 (skips 7.1 and 7.2)
- ✅ 5.2 → 6.0 (correct)
- ✅ 7.0 → 7.1 (correct)
- ✅ 7.2 → 8.0 (correct)
If user requests a multi-hop upgrade (e.g., 5.2 → 8.1):
- Explain the sequential requirement
- Break it into individual hops
- Generate separate reports for each hop
- Recommend completing each hop fully before moving to next
Supported Upgrade Paths
Legacy Rails (2.3 - 4.2)
| From | To | Difficulty | Key Changes | Ruby Required |
|---|---|---|---|---|
| 2.3.x | 3.0.x | Very Hard | XSS protection, routes syntax | 1.8.7 - 1.9.3 |
| 3.0.x | 3.1.x | Medium | Asset pipeline, jQuery | 1.8.7 - 1.9.3 |
| 3.1.x | 3.2.x | Easy | Ruby 1.9.3 support | 1.8.7 - 2.0 |
| 3.2.x | 4.0.x | Hard | Strong Parameters, Turbolinks | 1.9.3+ |
| 4.0.x | 4.1.x | Medium | Spring, secrets.yml | 1.9.3+ |
| 4.1.x | 4.2.x | Medium | ActiveJob, Web Console | 1.9.3+ |
| 4.2.x | 5.0.x | Hard | ActionCable, API mode, ApplicationRecord | 2.2.2+ |
Modern Rails (5.0 - 8.1)
| From | To | Difficulty | Key Changes | Ruby Required |
|---|---|---|---|---|
| 5.0.x | 5.1.x | Easy | Encrypted secrets, yarn default | 2.2.2+ |
| 5.1.x | 5.2.x | Medium | Active Storage, credentials | 2.2.2+ |
| 5.2.x | 6.0.x | Hard | Zeitwerk, Action Mailbox/Text | 2.5.0+ |
| 6.0.x | 6.1.x | Medium | Horizontal sharding, strict loading | 2.5.0+ |
| 6.1.x | 7.0.x | Hard | Hotwire/Turbo, Import Maps | 2.7.0+ |
| 7.0.x | 7.1.x | Medium | Composite keys, async queries | 2.7.0+ |
| 7.1.x | 7.2.x | Medium | Transaction-aware jobs, DevContainers | 3.1.0+ |
| 7.2.x | 8.0.x | Very Hard | Propshaft, Solid gems, Kamal | 3.2.0+ |
| 8.0.x | 8.1.x | Easy | Bundler-audit, max_connections | 3.2.0+ |
Available Resources
Core Documentation
SKILL.md- This file (entry point)
Version-Specific Guides (Load as needed)
Legacy Rails:
version-guides/upgrade-3.2-to-4.0.md- Rails 3.2 → 4.0 (Strong Parameters)version-guides/upgrade-4.0-to-4.1.md- Rails 4.0 → 4.1 (Spring, secrets.yml, enums)version-guides/upgrade-4.1-to-4.2.md- Rails 4.1 → 4.2 (ActiveJob, Web Console)version-guides/upgrade-4.2-to-5.0.md- Rails 4.2 → 5.0 (ApplicationRecord)
Modern Rails:
version-guides/upgrade-5.0-to-5.1.md- Rails 5.0 → 5.1 (Encrypted secrets)version-guides/upgrade-5.1-to-5.2.md- Rails 5.1 → 5.2 (Active Storage, Credentials)version-guides/upgrade-5.2-to-6.0.md- Rails 5.2 → 6.0 (Zeitwerk)version-guides/upgrade-6.0-to-6.1.md- Rails 6.0 → 6.1 (Horizontal sharding)version-guides/upgrade-6.1-to-7.0.md- Rails 6.1 → 7.0 (Hotwire/Turbo)version-guides/upgrade-7.0-to-7.1.md- Rails 7.0 → 7.1 (Composite keys)version-guides/upgrade-7.1-to-7.2.md- Rails 7.1 → 7.2 (Transaction jobs)version-guides/upgrade-7.2-to-8.0.md- Rails 7.2 → 8.0 (Propshaft)version-guides/upgrade-8.0-to-8.1.md- Rails 8.0 → 8.1 (bundler-audit)
Workflow Guides (Load when generating deliverables)
workflows/test-suite-verification-workflow.md- MANDATORY FIRST STEP - How to run and verify test suiteworkflows/no-test-suite-smoke-workflow.md- Load from Step 1 when no runnable RSpec/Minitest suite exists - Rails boot, routes, migration-status, and build smoke baseline with partial-confidence reportingworkflows/direct-detection-workflow.md- How to run breaking change detection directlyworkflows/upgrade-report-workflow.md- How to generate upgrade reportsworkflows/gem-compatibility-workflow.md- Load in Step 4.5 - Per-lockfile gem compatibility check against the target Rails version. Documents both the primary (next_railsbundle_report compatibility) and the secondary (railsbump.org API) and the rules for when to escalate.workflows/boot-smoke-test-workflow.md- Load in Step 4.6 - Run a Rails-loading command againstGemfile.nextto catch gem-level runtime incompat that the resolver can't see (gems calling removed Rails internals orrequire-ing removed files).workflows/ci-sync-workflow.md- MANDATORY before opening the upgrade PR - How to verify CI config matches the upgraded Gemfileworkflows/app-update-preview-workflow.md- How to generate app:update previewsupgrade-cleanupcompanion plugin - User-triggered. Removes dual-boot scaffolding and dropsNextRails.next?/NextRails.current?branches. Deprecation triage stays with this skill for the next hop.
Examples (Load when user needs clarification)
examples/simple-upgrade.md- Single-hop upgrade exampleexamples/multi-hop-upgrade.md- Multi-hop upgrade example
External Dependencies
- dual-boot skill - Dual-boot setup and management with next_rails (Step 2) (https://github.com/ombulabs/claude-code_dual-boot-skill)
- rails-load-defaults skill - Incremental load_defaults alignment (Step 7, final step) (https://github.com/ombulabs/claude-code_rails-load-defaults-skill)
Reference Materials
references/deprecation-warnings.md- Finding and fixing deprecationsreferences/staying-current.md- Keeping up with Rails releasesreferences/breaking-changes-by-version.md- Quick lookupreferences/multi-hop-strategy.md- Multi-version planningreferences/testing-checklist.md- Comprehensive testingreferences/gem-compatibility.md- Gem update order and the "no compatible version" playbook (fork / vendor / replace). Load only when Step 4.5's compatibility check produced blockers.references/js-compressor-sprockets-mismatch.md- Keeping terser / closure-compiler working when the target Rails pins Sprockets to the 2.x line. Load only when JS_COMPRESSOR_GEM_MISMATCH fires.
Detection Pattern Resources
detection-scripts/patterns/rails-*.yml- Version-specific patterns for direct detection
Report Templates
templates/upgrade-report-template.md- Main upgrade report structuretemplates/app-update-preview-template.md- Configuration preview
High-Level Workflow
When user requests an upgrade, follow this workflow:
Step 0: Verify Latest Patch Version (MANDATORY PRE-STEP)
⚠️ THIS STEP IS REQUIRED BEFORE ANY OTHER WORK
1. Read Gemfile.lock to find exact current Rails version (e.g., 3.2.19)
2. Compare against latest patch for that series:
- EOL series (≤ 7.1): use static table in references/multi-hop-strategy.md
- Active series (≥ 7.2): query RubyGems API (see references/multi-hop-strategy.md for commands)
3. If current version < latest patch:
- INFORM user: "Your app is on Rails X.Y.Z but the latest patch is X.Y.W"
- Guide through Gemfile update and bundle update rails
- Run test suite after patch upgrade
- Deploy patch upgrade before proceeding
- Do NOT proceed to next minor/major until on latest patch
4. If current version == latest patch:
- Proceed to Step 1
Why patch first: Patch releases contain security fixes, bug fixes, and additional deprecation warnings. Starting the version hop on the latest patch is safer (the security fixes are already in production) and easier to debug (the new deprecation warnings surface issues that would otherwise show up mid-upgrade).
Step 1: Run Test Suite (MANDATORY FIRST STEP)
⚠️ THIS STEP IS REQUIRED BEFORE ANY OTHER WORK
1. Read: workflows/test-suite-verification-workflow.md
2. Detect test framework (RSpec, Minitest, or both)
3. Run test suite with: bundle exec rspec OR bundle exec rails test
4. Capture results: total tests, passing, failing, pending
5. If no runnable test suite exists:
- Load: work
File metadata
name: rails-upgrade description: Analyzes Rails applications and generates comprehensive upgrade reports with breaking changes, deprecations, and step-by-step migration guides for Rails 2.3 through 8.1. Use when upgrading Rails applications, planning multi-hop upgrades, or querying version-specific changes. Based on FastRuby.io methodology and "The Complete Guide to Upgrade Rails" ebook.
View original text
--- name: rails-upgrade description: Analyzes Rails applications and generates comprehensive upgrade reports with breaking changes, deprecations, and step-by-step migration guides for Rails 2.3 through 8.1. Use when upgrading Rails applications, planning multi-hop upgrades, or querying version-specific changes. Based on FastRuby.io methodology and "The Complete Guide to Upgrade Rails" ebook. --- # Rails Upgrade Assistant Skill ## Skill Identity - **Name:** Rails Upgrade Assistant - **Purpose:** Intelligent Rails application upgrades from 2.3 through 8.1 - **Skill Type:** Modular with external workflows and examples - **Upgrade Strategy:** Sequential only (no version skipping) - **Methodology:** Based on FastRuby.io upgrade best practices and "The Complete Guide to Upgrade Rails" ebook - **Attribution:** Content based on "The Complete Guide to Upgrade Rails" by FastRuby.io (OmbuLabs) --- ## Dependencies - **dual-boot skill** ([github.com/ombulabs/claude-code_dual-boot-skill](https://github.com/ombulabs/claude-code_dual-boot-skill)) — Sets up and manages dual-boot environments using the `next_rails` gem. Covers setup, `NextRails.next?` code patterns, CI configuration, and post-upgrade cleanup. Must be installed for Step 2 of the upgrade workflow. - **rails-load-defaults skill** ([github.com/ombulabs/claude-code_rails-load-defaults-skill](https://github.com/ombulabs/claude-code_rails-load-defaults-skill)) — Handles incremental `load_defaults` updates with tiered risk assessment (Tier 1: low-risk, Tier 2: needs codebase grep, Tier 3: requires human review). Used as the final step after the Rails version upgrade is complete. --- ## Core Methodology (FastRuby.io Approach) This skill follows the proven FastRuby.io upgrade methodology: 1. **Incremental Upgrades** - Always upgrade one minor/major version at a time 2. **Assessment First** - Understand scope before making changes 3. **Dual-Boot Testing** - Test both versions during transition using `next_rails` gem 4. **Test Coverage** - Ensure adequate test coverage before upgrading (aim for 80%+) 5. **Gem Compatibility** - Check gem compatibility at each step using RailsBump 6. **Deprecation Warnings** - Address deprecations before upgrading 7. **Backwards Compatible Changes** - Deploy small changes to production before version bump **Key Resources:** - **DELEGATE** to the `dual-boot` skill for dual-boot setup with `next_rails` (see Dependencies) - See `references/deprecation-warnings.md` for managing deprecations - See `references/staying-current.md` for maintaining upgrades over time --- ## CRITICAL: Dual-Boot Code Pattern with `NextRails.next?` When proposing code fixes that must work with both the current and target Rails versions (dual-boot), **always use `NextRails.next?` from the `next_rails` gem** — never use `respond_to?` or other feature-detection patterns. **DELEGATE** to the `dual-boot` skill for: - Setup and initialization (`next_rails --init`, `Gemfile.next`) - `NextRails.next?` code patterns and examples - CI configuration for dual-boot testing - Post-upgrade cleanup (removing dual-boot branches) **DEPENDENCY:** Requires the [dual-boot skill](https://github.com/ombulabs/claude-code_dual-boot-skill) --- ## Trigger Patterns Claude should activate this skill when user says: **Upgrade Requests:** - "Upgrade my Rails app to [version]" - "Help me upgrade from Rails [x] to [y]" - "What breaking changes are in Rails [version]?" - "Plan my upgrade from [x] to [y]" - "What Rails version am I using?" - "Analyze my Rails app for upgrade" - "Find breaking changes in my code" - "Check my app for Rails [version] compatibility" **Specific Report Requests:** - "Show me the app:update changes" - "Preview configuration changes for Rails [version]" - "Generate the upgrade report" - "What will change if I upgrade?" **Upgrade Cleanup Requests (delegate to the `upgrade-cleanup` plugin):** - "Finish the upgrade" - "Clean up after my Rails upgrade" - "Remove the dual-boot setup" - "Drop the NextRails branches" - "We're done upgrading to Rails [version]" --- ## CRITICAL: Sequential Upgrade Strategy ### ⚠️ Version Skipping is NOT Allowed Rails upgrades MUST follow a sequential path. Examples: **For Rails 5.x to 8.x:** ``` 5.0.x → 5.1.x → 5.2.x → 6.0.x → 6.1.x → 7.0.x → 7.1.x → 7.2.x → 8.0.x → 8.1.x ``` **You CANNOT skip versions.** Examples: - ❌ 5.2 → 6.1 (skips 6.0) - ❌ 6.0 → 7.0 (skips 6.1) - ❌ 7.0 → 8.0 (skips 7.1 and 7.2) - ✅ 5.2 → 6.0 (correct) - ✅ 7.0 → 7.1 (correct) - ✅ 7.2 → 8.0 (correct) If user requests a multi-hop upgrade (e.g., 5.2 → 8.1): 1. Explain the sequential requirement 2. Break it into individual hops 3. Generate separate reports for each hop 4. Recommend completing each hop fully before moving to next --- ## Supported Upgrade Paths ### Legacy Rails (2.3 - 4.2) | From | To | Difficulty | Key Changes | Ruby Required | |------|-----|-----------|-------------|---------------| | 2.3.x | 3.0.x | Very Hard | XSS protection, routes syntax | 1.8.7 - 1.9.3 | | 3.0.x | 3.1.x | Medium | Asset pipeline, jQuery | 1.8.7 - 1.9.3 | | 3.1.x | 3.2.x | Easy | Ruby 1.9.3 support | 1.8.7 - 2.0 | | 3.2.x | 4.0.x | Hard | Strong Parameters, Turbolinks | 1.9.3+ | | 4.0.x | 4.1.x | Medium | Spring, secrets.yml | 1.9.3+ | | 4.1.x | 4.2.x | Medium | ActiveJob, Web Console | 1.9.3+ | | 4.2.x | 5.0.x | Hard | ActionCable, API mode, ApplicationRecord | 2.2.2+ | ### Modern Rails (5.0 - 8.1) | From | To | Difficulty | Key Changes | Ruby Required | |------|-----|-----------|-------------|---------------| | 5.0.x | 5.1.x | Easy | Encrypted secrets, yarn default | 2.2.2+ | | 5.1.x | 5.2.x | Medium | Active Storage, credentials | 2.2.2+ | | 5.2.x | 6.0.x | Hard | Zeitwerk, Action Mailbox/Text | 2.5.0+ | | 6.0.x | 6.1.x | Medium | Horizontal sharding, strict loading | 2.5.0+ | | 6.1.x | 7.0.x | Hard | Hotwire/Turbo, Import Maps | 2.7.0+ | | 7.0.x | 7.1.x | Medium | Composite keys, async queries | 2.7.0+ | | 7.1.x | 7.2.x | Medium | Transaction-aware jobs, DevContainers | 3.1.0+ | | 7.2.x | 8.0.x | Very Hard | Propshaft, Solid gems, Kamal | 3.2.0+ | | 8.0.x | 8.1.x | Easy | Bundler-audit, max_connections | 3.2.0+ | --- ## Available Resources ### Core Documentation - `SKILL.md` - This file (entry point) ### Version-Specific Guides (Load as needed) **Legacy Rails:** - `version-guides/upgrade-3.2-to-4.0.md` - Rails 3.2 → 4.0 (Strong Parameters) - `version-guides/upgrade-4.0-to-4.1.md` - Rails 4.0 → 4.1 (Spring, secrets.yml, enums) - `version-guides/upgrade-4.1-to-4.2.md` - Rails 4.1 → 4.2 (ActiveJob, Web Console) - `version-guides/upgrade-4.2-to-5.0.md` - Rails 4.2 → 5.0 (ApplicationRecord) **Modern Rails:** - `version-guides/upgrade-5.0-to-5.1.md` - Rails 5.0 → 5.1 (Encrypted secrets) - `version-guides/upgrade-5.1-to-5.2.md` - Rails 5.1 → 5.2 (Active Storage, Credentials) - `version-guides/upgrade-5.2-to-6.0.md` - Rails 5.2 → 6.0 (Zeitwerk) - `version-guides/upgrade-6.0-to-6.1.md` - Rails 6.0 → 6.1 (Horizontal sharding) - `version-guides/upgrade-6.1-to-7.0.md` - Rails 6.1 → 7.0 (Hotwire/Turbo) - `version-guides/upgrade-7.0-to-7.1.md` - Rails 7.0 → 7.1 (Composite keys) - `version-guides/upgrade-7.1-to-7.2.md` - Rails 7.1 → 7.2 (Transaction jobs) - `version-guides/upgrade-7.2-to-8.0.md` - Rails 7.2 → 8.0 (Propshaft) - `version-guides/upgrade-8.0-to-8.1.md` - Rails 8.0 → 8.1 (bundler-audit) ### Workflow Guides (Load when generating deliverables) - `workflows/test-suite-verification-workflow.md` - **MANDATORY FIRST STEP** - How to run and verify test suite - `workflows/no-test-suite-smoke-workflow.md` - **Load from Step 1 when no runnable RSpec/Minitest suite exists** - Rails boot, routes, migration-status, and build smoke baseline with partial-confidence reporting - `workflows/direct-detection-workflow.md` - How to run breaking change detection directly - `workflows/upgrade-report-workflow.md` - How to generate upgrade reports - `workflows/gem-compatibility-workflow.md` - **Load in Step 4.5** - Per-lockfile gem compatibility check against the target Rails version. Documents both the primary (`next_rails` `bundle_report compatibility`) and the secondary (railsbump.org API) and the rules for when to escalate. - `workflows/boot-smoke-test-workflow.md` - **Load in Step 4.6** - Run a Rails-loading command against `Gemfile.next` to catch gem-level runtime incompat that the resolver can't see (gems calling removed Rails internals or `require`-ing removed files). - `workflows/ci-sync-workflow.md` - **MANDATORY before opening the upgrade PR** - How to verify CI config matches the upgraded Gemfile - `workflows/app-update-preview-workflow.md` - How to generate app:update previews - **`upgrade-cleanup` companion plugin** - User-triggered. Removes dual-boot scaffolding and drops `NextRails.next?` / `NextRails.current?` branches. Deprecation triage stays with this skill for the next hop. ### Examples (Load when user needs clarification) - `examples/simple-upgrade.md` - Single-hop upgrade example - `examples/multi-hop-upgrade.md` - Multi-hop upgrade example ### External Dependencies - **dual-boot skill** - Dual-boot setup and management with next_rails (Step 2) (https://github.com/ombulabs/claude-code_dual-boot-skill) - **rails-load-defaults skill** - Incremental load_defaults alignment (Step 7, final step) (https://github.com/ombulabs/claude-code_rails-load-defaults-skill) ### Reference Materials - `references/deprecation-warnings.md` - Finding and fixing deprecations - `references/staying-current.md` - Keeping up with Rails releases - `references/breaking-changes-by-version.md` - Quick lookup - `references/multi-hop-strategy.md` - Multi-version planning - `references/testing-checklist.md` - Comprehensive testing - `references/gem-compatibility.md` - Gem update order and the "no compatible version" playbook (fork / vendor / replace). Load only when Step 4.5's compatibility check produced blockers. - `references/js-compressor-sprockets-mismatch.md` - Keeping terser / closure-compiler working when the target Rails pins Sprockets to the 2.x line. Load only when JS_COMPRESSOR_GEM_MISMATCH fires. ### Detection Pattern Resources - `detection-scripts/patterns/rails-*.yml` - Version-specific patterns for direct detection ### Report Templates - `templates/upgrade-report-template.md` - Main upgrade report structure - `templates/app-update-preview-template.md` - Configuration preview --- ## High-Level Workflow When user requests an upgrade, follow this workflow: ### Step 0: Verify Latest Patch Version (MANDATORY PRE-STEP) ``` ⚠️ THIS STEP IS REQUIRED BEFORE ANY OTHER WORK 1. Read Gemfile.lock to find exact current Rails version (e.g., 3.2.19) 2. Compare against latest patch for that series: - EOL series (≤ 7.1): use static table in references/multi-hop-strategy.md - Active series (≥ 7.2): query RubyGems API (see references/multi-hop-strategy.md for commands) 3. If current version < latest patch: - INFORM user: "Your app is on Rails X.Y.Z but the latest patch is X.Y.W" - Guide through Gemfile update and bundle update rails - Run test suite after patch upgrade - Deploy patch upgrade before proceeding - Do NOT proceed to next minor/major until on latest patch 4. If current version == latest patch: - Proceed to Step 1 ``` **Why patch first:** Patch releases contain security fixes, bug fixes, and additional deprecation warnings. Starting the version hop on the latest patch is safer (the security fixes are already in production) and easier to debug (the new deprecation warnings surface issues that would otherwise show up mid-upgrade). ### Step 1: Run Test Suite (MANDATORY FIRST STEP) ``` ⚠️ THIS STEP IS REQUIRED BEFORE ANY OTHER WORK 1. Read: workflows/test-suite-verification-workflow.md 2. Detect test framework (RSpec, Minitest, or both) 3. Run test suite with: bundle exec rspec OR bundle exec rails test 4. Capture results: total tests, passing, failing, pending 5. If no runnable test suite exists: - Load: work
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- Dependency or permission surface needs review
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- The SKILL.md excerpt is truncated, but the visible content is comprehensive and well-organized.
- The skill references an 'upgrade-cleanup' plugin in trigger patterns but does not list it in the Dependencies section, which could cause confusion about required setup.
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- Stars/forks activity: 381 stars, 15 forks; issue activity unavailable in current metadata
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- Source repository
- ombulabs/claude-code_rails-upgrade-skill
- License
- MIT
- Version
- 1.0.0
- Last GitHub push
- Aug 27, 2026
- Registry updated
- Sep 29, 2026
- Instruction path
- rails-upgrade/SKILL.md @ 44b7cda5ae3e
Version reported in registry metadata; check source releases before relying on it.
Quality
70/100
Strong
Trust
53/100
Do not auto-install
Audit
72/100
Needs review
- Dependency or permission surface needs review
- Permission surface may require sandboxing
- The SKILL.md excerpt is truncated, but the visible content is comprehensive and well-organized.
- The skill references an 'upgrade-cleanup' plugin in trigger patterns but does not list it in the Dependencies section, which could cause confusion about required setup.
- The skill depends on two external skills (dual-boot and rails-load-defaults) that must be installed separately; this is clearly stated but could be a barrier if users are unaware.
- Quality score needs review
- Permission surface needs review: secrets or environment access, shell or command execution
- Stars/forks activity: 381 stars, 15 forks; issue activity unavailable in current metadata
- Dependency/runtime risk: command execution surface, credential or environment access
- Permission surface: secrets or environment access, shell or command execution
- Verified installs
- —
- Outcomes
- —
Copies are not installs. Installation counts require a reported successful installation; they are not a blanket quality guarantee.
Agent access
This page exposes the same decision, trust, audit, use-case, and install signals through the Registry API, so agents can rank this skill without scraping the UI.
More details
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- ombulabs
- Indexed by
- OpenAgentSkill community index
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