Framework Migration Assistant
ArabelaTso/Skills-4-SE
Automatically migrate Python web applications between frameworks (Flask → FastAPI, Django → FastAPI).
Project conventions for Rails version upgrades in this app. An agent skill from recursecenter/community.
Install Rails Upgrade
$ npx skills add recursecenter/community --skill rails-upgrade -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install recursecenter/community rails-upgrade --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/recursecenter/community.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/rails-upgrade .claude/skills/rails-upgrade && rm -rf skills-srcUse ~/.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/
Install the "rails-upgrade" agent skill from https://github.com/recursecenter/community/tree/master/.claude/skills/rails-upgrade into .claude/skills/rails-upgrade/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rails-upgrade", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/recursecenter/community/tree/master/.claude/skills/rails-upgradeType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add recursecenter/community --skill rails-upgrade -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install recursecenter/community rails-upgrade --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/recursecenter/community.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/rails-upgrade .agents/skills/rails-upgrade && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "rails-upgrade" agent skill from https://github.com/recursecenter/community/tree/master/.claude/skills/rails-upgrade into .agents/skills/rails-upgrade/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rails-upgrade", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add recursecenter/community --skill rails-upgrade -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install recursecenter/community rails-upgrade --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/recursecenter/community.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/rails-upgrade .cursor/skills/rails-upgrade && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "rails-upgrade" agent skill from https://github.com/recursecenter/community/tree/master/.claude/skills/rails-upgrade into .cursor/skills/rails-upgrade/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rails-upgrade", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/recursecenter/community.git --path .claude/skills/rails-upgrade--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add recursecenter/community --skill rails-upgrade -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install recursecenter/community rails-upgrade --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/recursecenter/community.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/rails-upgrade .gemini/skills/rails-upgrade && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "rails-upgrade" agent skill from https://github.com/recursecenter/community/tree/master/.claude/skills/rails-upgrade into .gemini/skills/rails-upgrade/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rails-upgrade", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install recursecenter/community rails-upgradeInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add recursecenter/community --skill rails-upgrade -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/recursecenter/community.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/rails-upgrade .github/skills/rails-upgrade && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "rails-upgrade" agent skill from https://github.com/recursecenter/community/tree/master/.claude/skills/rails-upgrade into .github/skills/rails-upgrade/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rails-upgrade", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add recursecenter/community --skill rails-upgrade -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install recursecenter/community rails-upgrade --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/recursecenter/community.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/rails-upgrade .opencode/skills/rails-upgrade && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "rails-upgrade" agent skill from https://github.com/recursecenter/community/tree/master/.claude/skills/rails-upgrade into .opencode/skills/rails-upgrade/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rails-upgrade", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
rails-upgrade- GitHub stars
- 117
- Token cost
- ~719 tokens
- SKILL.md length
- 305 words
- Files
- 1
- Skills in repo
- 1
- Repo updated
- First seen
- Licence
- AGPL-3.0
At a glance
Project conventions for Rails version upgrades in this app. An agent skill from recursecenter/community.
- Works in 2 steps: Do not use the dual-boot pattern → Carefully review every diff that rails…
- Tasks that involve Backend development
- SKILL.md covers 1. Do not use the dual-boot… and 2. Carefully review every diff…
- Calls rails
What it does
Rails Upgrade is an agent skill from recursecenter/community. Project conventions for Rails version upgrades in this app. Follow these whenever planning or executing a Rails minor/major upgrade (e.g. 7.1 → 7.2, 7.2 → 8.0), in addition to any general rails-upgrade tooling.
Its SKILL.md is about 720 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Backend & APIs, covering Backend development and Code migrations. The repository describes itself as: community.recurse.com. The licence is AGPL-3.0.
When your agent uses it
- Tasks that involve Backend development
- Tasks that involve Code migrations
Example prompts
- “/rails-upgrade”
Workflow steps
2 steps, taken from the step headings in SKILL.md.
What it can do on your machine
Read from SKILL.md and the folder at commit e6c2357. 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
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
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
Rails Upgrade loads about 719 tokens when it runs. Until then it costs about 56 tokens; SKILL.md has 305 words of instructions outside code blocks.
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
The full file from recursecenter/community at commit e6c2357, republished under its AGPL-3.0 licence (© recursecenter). 305 words, ~719 tokens.
Download SKILL.mdSave it as
.claude/skills/rails-upgrade/SKILL.md (or your agent's skills folder).- name
- rails-upgrade
- description
- Project conventions for Rails version upgrades in this app. Follow these whenever planning or executing a Rails minor/major upgrade (e.g. 7.1 → 7.2, 7.2 → 8.0), in addition to any general rails-upgrade tooling.
When upgrading Rails in this app, follow these two conventions. They override the defaults of any general-purpose Rails upgrade workflow.
1. Do not use the dual-boot pattern
Skip next_rails, Gemfile.next, NextRails.next? branches, and a dual-boot CI matrix. Deliver each Rails version upgrade as a single PR that bumps Rails and applies all required fixes together.
The team and app are small enough that the overhead of maintaining a dual-boot environment (extra lockfile, conditional Gemfile, doubled CI runtime, code branches that have to be cleaned up later) is not worth the safety it adds. A single-PR upgrade is simpler to review, deploy, and revert.
For breaking-change fixes that would normally need a NextRails.next? branch in a dual-boot world, apply the new-version-only API directly in the same PR as the Rails bump — both changes ship together.
2. Carefully review every diff that rails app:update produces
rails app:update is interactive; for each conflicting file it offers Y/n/d/h. Use d to view the diff and then decide per file. Three categories:
- Take stock changes when they are real improvements with no app-specific cost (e.g. modern Puma threading defaults, adding
:emailtofilter_parameter_logging, new useful defaults that don't conflict with custom config). - Keep our version when stock generator output would erase app-specific configuration (custom
log_tags,hostsallowlist, asset paths, CORS policy,frame_ancestors,queue_adapter,exceptions_app, custom URL options, environment-specific deploy concerns, etc.). - Cherry-pick lines worth taking and leave everything else untouched.
Do not just n-decline every conflict. That shortcut quietly accumulates config drift — your config files keep aging away from current Rails defaults, and you lose legitimate improvements baked into the updated generator templates.
A reliable workflow when working through app:update non-interactively (e.g. via Claude Code):
# 1. Back up the conflict files
mkdir -p /tmp/<app>-pre-update
cp <each conflict file> /tmp/<app>-pre-update/<same path>
# 2. Force-write stock templates
bin/rails app:update --force
# 3. Per-file: diff stock vs backup
diff -u /tmp/<app>-pre-update/<file> <file>
# 4. Decide per file: keep stock, restore backup, or merge selectively
cp /tmp/<app>-pre-update/<file> <file> # restore mine
# (or leave stock in place, or edit by hand to merge)This produces one reviewable diff per file instead of the interactive prompt and makes the per-file decisions easy to discuss and document in the PR.
© recursecenter, AGPL-3.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in .claude/skills/rails-upgrade of recursecenter/community.
Open the folder on GitHubat commit e6c2357
Compare with similar skills
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 | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Rails Upgrade this skillrecursecenter/community | 117 | — | ~719 | Automated safety check: Pass | AGPL-3.0 | |
| Framework Migration AssistantArabelaTso/Skills-4-SE | 253 | — | ~1.9k | Automated safety check: Pass | Apache-2.0 | |
| Groovy 5 Developer Guideapache/grails-core | 2.9k | — | ~3k | Automated safety check: Pass | Apache-2.0 | |
| Neo4j Spring Data Skillneo4j-contrib/neo4j-skills | 114 | — | ~3.7k | Automated safety check: Notes | MIT | |
| Deprecated API UpdaterArabelaTso/Skills-4-SE | 253 | — | ~2.8k | Automated safety check: Pass | Apache-2.0 | |
| Infer Conventionsanonaddy/anonaddy | 4.9k | 5 repos | ~3.1k | Automated safety check: Pass | MIT |
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Related
Categories
Questions about Rails Upgrade
What does Rails Upgrade do?
Project conventions for Rails version upgrades in this app. An agent skill from recursecenter/community. Rails Upgrade is an agent skill from recursecenter/community. Project conventions for Rails version upgrades in this app.
When should I use Rails Upgrade?
Rails Upgrade fits situations like: tasks that involve Backend development; tasks that involve Code migrations.
How do I install Rails Upgrade in Claude Code?
Run `npx skills add recursecenter/community --skill rails-upgrade -a claude-code`. Or copy the skill folder (.claude/skills/rails-upgrade in recursecenter/community) into .claude/skills/rails-upgrade in your project. Claude Code loads it when a task matches its description.
How do I install Rails Upgrade in Codex?
Run `npx skills add recursecenter/community --skill rails-upgrade -a codex`. Or copy the skill folder (.claude/skills/rails-upgrade in recursecenter/community) into .agents/skills/rails-upgrade in your project. Codex loads it when a task matches its description.
Can I use 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 recursecenter/community --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/rails-upgrade, .gemini/skills/rails-upgrade, .github/skills/rails-upgrade and .opencode/skills/rails-upgrade in your project.
What does Rails Upgrade need to run?
Going by SKILL.md and its folder, Rails Upgrade needs the command-line tools its instructions call (rails).
Does Rails Upgrade access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is 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 Rails Upgrade use?
Rails Upgrade is published under the AGPL-3.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Rails Upgrade use?
About 719 tokens (SKILL.md is roughly 2.9k 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 Rails Upgrade?
Skills that share tags, products or a category with Rails Upgrade: Framework Migration Assistant (ArabelaTso/Skills-4-SE, 253 stars), Groovy 5 Developer Guide (apache/grails-core, 2.9k stars), Neo4j Spring Data Skill (neo4j-contrib/neo4j-skills, 114 stars) and Deprecated API Updater (ArabelaTso/Skills-4-SE, 253 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Rails Upgrade?
recursecenter (a GitHub organization) maintains it in recursecenter/community, which has 117 GitHub stars. The repository was last updated on September 29, 2026.
Source: recursecenter/community on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.