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rails-upgrade-assistant
72 / 100 · Review before installing
Check before installing. Some of what it can do is expected: a productivity skill usually connects to your mail, calendar or notes.
By MadBomber/experiments (GitHub) · productivity · 11 stars · scanned at commit 8139ff6
Analyzes Rails applications and generates comprehensive upgrade reports with breaking changes, deprecations, and step-by-step migration guides for Rails 7.0 through 8.1.1. Use when upgrading Rails applications, planning multi-hop upgrades, or querying version-specific changes.
Works with any agent that supports SKILL.md skills.
What this skill can do
Downloads and installs other software
The author does not mention this.
Found in 2 places.
Sends data to these websites: yourapp.com
This is disclosed by the author in the skill's SKILL.md or README. Expected for a productivity skill.
Found in 21 places.
Show 17 more
- ai_misc/skills/maquina-rails-upgrade/docs/QUICK-REFERENCE.md, line 1155
curl -I https://yourapp.com - ai_misc/skills/maquina-rails-upgrade/reference/deprecations-timeline.md, line 267
pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %> - ai_misc/skills/maquina-rails-upgrade/reference/deprecations-timeline.md, line 271
max_connections: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %> - ai_misc/skills/maquina-rails-upgrade/reference/testing-checklist.md, line 571
curl -I http://localhost:3000 - ai_misc/skills/maquina-rails-upgrade/reference/testing-checklist.md, line 667
curl -I https://yourapp.com - ai_misc/skills/maquina-rails-upgrade/version-guides/upgrade-7.1-to-7.2.md, line 1299
max_threads_count = ENV.fetch("RAILS_MAX_THREADS") { 5 } - ai_misc/skills/maquina-rails-upgrade/version-guides/upgrade-7.1-to-7.2.md, line 1300
min_threads_count = ENV.fetch("RAILS_MIN_THREADS") { max_threads_count } - ai_misc/skills/maquina-rails-upgrade/version-guides/upgrade-7.1-to-7.2.md, line 1303
rails_env = ENV.fetch("RAILS_ENV") { "development" } - ai_misc/skills/maquina-rails-upgrade/version-guides/upgrade-7.1-to-7.2.md, line 1306
worker_count = Integer(ENV.fetch("WEB_CONCURRENCY") { 1 }) - ai_misc/skills/maquina-rails-upgrade/version-guides/upgrade-7.1-to-7.2.md, line 1314
worker_timeout 3600 if ENV.fetch("RAILS_ENV", "development") == "development" - ai_misc/skills/maquina-rails-upgrade/version-guides/upgrade-7.1-to-7.2.md, line 1316
port ENV.fetch("PORT") { 3000 } - ai_misc/skills/maquina-rails-upgrade/version-guides/upgrade-7.1-to-7.2.md, line 1318
pidfile ENV.fetch("PIDFILE") { "tmp/pids/server.pid" } - ai_misc/skills/maquina-rails-upgrade/version-guides/upgrade-7.1-to-7.2.md, line 1322
threads_count = ENV.fetch("RAILS_MAX_THREADS", 3) - ai_misc/skills/maquina-rails-upgrade/version-guides/upgrade-7.1-to-7.2.md, line 1325
port ENV.fetch("PORT", 3000) - ai_misc/skills/maquina-rails-upgrade/version-guides/upgrade-8.0-to-8.1.md, line 148
pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %> - ai_misc/skills/maquina-rails-upgrade/version-guides/upgrade-8.0-to-8.1.md, line 157
max_connections: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %> - ai_misc/skills/maquina-rails-upgrade/version-guides/upgrade-8.0-to-8.1.md, line 556
config.log_level = ENV.fetch("RAILS_LOG_LEVEL", "info")
and 1 more places
Changes files outside its own folder
The author does not mention this.
Found in 1 place.
Safer alternatives
Low-risk skills in the same category (productivity) that look related. Check that one does what you need.
Install
Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.
if [ -e ~/.agents/skills/'rails-upgrade-assistant' ] || [ -L ~/.agents/skills/'rails-upgrade-assistant' ]; then echo 'A skill folder named rails-upgrade-assistant already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/MadBomber/experiments' "$d" && git -C "$d" checkout --quiet '8139ff68e8895b544661aa2ba8b53268d68652bc' -- 'ai_misc/skills/maquina-rails-upgrade' && mkdir -p ~/.agents/skills && cp -R "$d"/'ai_misc/skills/maquina-rails-upgrade' ~/.agents/skills/'rails-upgrade-assistant' && rm -rf "$d"; fi
Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'rails-upgrade-assistant' ~/.claude/skills/'rails-upgrade-assistant' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.
Badge for your README
The badge for MadBomber/experiments shows the score of its lowest-scoring skill.
[](https://zalavijaysinh.github.io/skilltrust/repos/MadBomber/experiments/)
Score history
| Date | Version | Score |
|---|
| 2026-11-10 | 8139ff6 | 72 |