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Agent skill

Skill Rails Upgrade

by aiskillstore in aiskillstore/marketplace

Analyze Rails apps and provide upgrade assessments. An agent skill from aiskillstore/marketplace.

No licenceAuto-check passedBackend & APIs

Install Skill Rails Upgrade

skills CLI
$ npx skills add aiskillstore/marketplace --skill skill-rails-upgrade -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install aiskillstore/marketplace skill-rails-upgrade --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/sickn33/skill-rails-upgrade .claude/skills/skill-rails-upgrade && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
skill-rails-upgrade
GitHub stars
433
Used in
5 other repos
Token cost
~3.1k tokens
SKILL.md length
1,159 words
Files
2
Skills in repo
1,044
Repo updated
First seen
Licence
None found

At a glance

Analyze Rails apps and provide upgrade assessments. An agent skill from aiskillstore/marketplace.

  • Works in 10 steps: Verify Rails Application → Get Current Rails Version → Find Latest Rails Version → …
  • Tasks that involve Backend development
  • SKILL.md covers When to Use This Skill, Step 1: Verify Rails Application, Step 2: Get Current Rails… and Step 3: Find Latest Rails…, plus 9 more sections
  • Calls rails, gh and npm; reaches railsdiff.org and guides.rubyonrails.org

What it does

Skill Rails Upgrade is an agent skill from aiskillstore/marketplace. Analyze Rails apps and provide upgrade assessments

Its SKILL.md is about 3.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `skill-report.json`).

It sits in Backend & APIs, covering Backend development. It works with Ruby. The repository describes itself as: Security-audited skills for Claude, Codex & Claude Code. One-click install, quality verified.

When your agent uses it

  • Tasks that involve Backend development

Example prompts

  • “/skill-rails-upgrade”

Workflow steps

10 steps, taken from the step headings in SKILL.md.

  1. Verify Rails Application
  2. Get Current Rails Version
  3. Find Latest Rails Version
  4. Determine Upgrade Type
  5. Fetch Upgrade Guide
  6. Fetch Rails Diff
  7. Check JavaScript Dependencies
  8. Generate Upgrade Summary
  9. Selective File Update (replaces rails app:update)
  10. Finalize Framework Defaults

What it can do on your machine

Read from SKILL.md and the folder at commit 44923f3. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • rails
    • gh
    • npm
    • git
    • bundle

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • railsdiff.org
    • guides.rubyonrails.org

    Also links to:

    • github.com

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Skill Rails Upgrade loads about 3.1k tokens when it runs. Until then it costs about 18 tokens; SKILL.md has 1,159 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~18
When it runs · the whole SKILL.md, loaded when a task matches
~3.1k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 1,159 words (~3,080 tokens).

“Analyze Rails apps and provide upgrade assessments”

— opening of SKILL.md by aiskillstore
name
skill-rails-upgrade
source
https://github.com/robzolkos/skill-rails-upgrade
risk
safe

Read the full SKILL.md on GitHub

Files

SKILL.md and 1 other file in skills/sickn33/skill-rails-upgrade of aiskillstore/marketplace.

  • SKILL.md
  • skill-report.json

Open the folder on GitHubat commit 44923f3

Used in 5 other repositories

We found 14 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 5 other GitHub owners. This page covers the copy in aiskillstore/marketplace, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Skill Rails Upgrade next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Skill Rails Upgrade compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Skill Rails Upgrade this skillaiskillstore/marketplace4335 repos~3.1kAutomated safety check: PassNone
Antipattern Preventiondoorkeeper-gem/doorkeeper5.5k—~1.1kAutomated safety check: PassMIT
Backfill Event Datarubyevents/rubyevents569—~2.8kAutomated safety check: PassNone
Ruby Version Managerst0012/ruby-skills125—~1.3kAutomated safety check: PassMIT
Upgrade RailsRailsEventStore/ecommerce507—~976Automated safety check: PassMIT
Rails ExpertJeffallan/claude-skills12k—~1.4kAutomated safety check: PassMIT

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    433 GitHub starsUsed in 1 repo~697 tokens
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Works with

Categories

Questions about Skill Rails Upgrade

What does Skill Rails Upgrade do?

Analyze Rails apps and provide upgrade assessments. An agent skill from aiskillstore/marketplace. Skill Rails Upgrade is an agent skill from aiskillstore/marketplace.

When should I use Skill Rails Upgrade?

Skill Rails Upgrade fits situations like: tasks that involve Backend development.

How do I install Skill Rails Upgrade in Claude Code?

Run `npx skills add aiskillstore/marketplace --skill skill-rails-upgrade -a claude-code`. Or copy the skill folder (skills/sickn33/skill-rails-upgrade in aiskillstore/marketplace) into .claude/skills/skill-rails-upgrade in your project. Claude Code loads it when a task matches its description.

How do I install Skill Rails Upgrade in Codex?

Run `npx skills add aiskillstore/marketplace --skill skill-rails-upgrade -a codex`. Or copy the skill folder (skills/sickn33/skill-rails-upgrade in aiskillstore/marketplace) into .agents/skills/skill-rails-upgrade in your project. Codex loads it when a task matches its description.

Can I use Skill Rails Upgrade in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add aiskillstore/marketplace --skill skill-rails-upgrade -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/skill-rails-upgrade, .gemini/skills/skill-rails-upgrade, .github/skills/skill-rails-upgrade and .opencode/skills/skill-rails-upgrade in your project.

What does Skill Rails Upgrade need to run?

Going by SKILL.md and its folder, Skill Rails Upgrade needs the command-line tools its instructions call (rails, gh, npm, git and bundle).

Does Skill Rails Upgrade access the network?

SKILL.md names 3 domains. In commands or code: railsdiff.org and guides.rubyonrails.org; the agent is likely to contact these when it follows the instructions. As links in the text: github.com. This is read from the text; nothing was executed.

Is Skill Rails Upgrade safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Skill Rails Upgrade use?

No licence was found for Skill Rails Upgrade or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Skill Rails Upgrade use?

About 3.1k tokens (SKILL.md is roughly 12k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Skill Rails Upgrade?

Skills that share tags, products or a category with Skill Rails Upgrade: Antipattern Prevention (doorkeeper-gem/doorkeeper, 5.5k stars), Backfill Event Data (rubyevents/rubyevents, 569 stars), Ruby Version Manager (st0012/ruby-skills, 125 stars) and Upgrade Rails (RailsEventStore/ecommerce, 507 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Skill Rails Upgrade?

aiskillstore (a GitHub organization) maintains it in aiskillstore/marketplace, which has 433 GitHub stars. The repository holds 1,044 skills in this directory. The repository was last updated on October 10, 2026.

Source: aiskillstore/marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.