Database Migration
agulli/atlas-agents
Safely run database schema migrations. An agent skill from agulli/atlas-agents.
Applies an opinionated Rails style to any Rails work: rich models, CRUD-only routes, state kept as records, schema constraints and very few dependencies.
Install Rails Conventions
$ npx skills add tech-leads-club/agent-skills --skill rails-dev -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install tech-leads-club/agent-skills rails-dev --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/tech-leads-club/agent-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/'packages/skills-catalog/skills/(development)/rails-dev' .claude/skills/rails-dev && 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-dev" agent skill from https://github.com/tech-leads-club/agent-skills/tree/main/packages/skills-catalog/skills/(development)/rails-dev into .claude/skills/rails-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rails-dev", 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/tech-leads-club/agent-skills/tree/main/packages/skills-catalog/skills/(development)/rails-devType 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 tech-leads-club/agent-skills --skill rails-dev -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install tech-leads-club/agent-skills rails-dev --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/tech-leads-club/agent-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/'packages/skills-catalog/skills/(development)/rails-dev' .agents/skills/rails-dev && 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-dev" agent skill from https://github.com/tech-leads-club/agent-skills/tree/main/packages/skills-catalog/skills/(development)/rails-dev into .agents/skills/rails-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rails-dev", 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 tech-leads-club/agent-skills --skill rails-dev -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install tech-leads-club/agent-skills rails-dev --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/tech-leads-club/agent-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/'packages/skills-catalog/skills/(development)/rails-dev' .cursor/skills/rails-dev && 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-dev" agent skill from https://github.com/tech-leads-club/agent-skills/tree/main/packages/skills-catalog/skills/(development)/rails-dev into .cursor/skills/rails-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rails-dev", 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/tech-leads-club/agent-skills.git --path 'packages/skills-catalog/skills/(development)/rails-dev'--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 tech-leads-club/agent-skills --skill rails-dev -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install tech-leads-club/agent-skills rails-dev --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/tech-leads-club/agent-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/'packages/skills-catalog/skills/(development)/rails-dev' .gemini/skills/rails-dev && 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-dev" agent skill from https://github.com/tech-leads-club/agent-skills/tree/main/packages/skills-catalog/skills/(development)/rails-dev into .gemini/skills/rails-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rails-dev", 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 tech-leads-club/agent-skills rails-devInstalls 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 tech-leads-club/agent-skills --skill rails-dev -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/tech-leads-club/agent-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/'packages/skills-catalog/skills/(development)/rails-dev' .github/skills/rails-dev && 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-dev" agent skill from https://github.com/tech-leads-club/agent-skills/tree/main/packages/skills-catalog/skills/(development)/rails-dev into .github/skills/rails-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rails-dev", 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 tech-leads-club/agent-skills --skill rails-dev -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install tech-leads-club/agent-skills rails-dev --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/tech-leads-club/agent-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/'packages/skills-catalog/skills/(development)/rails-dev' .opencode/skills/rails-dev && 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-dev" agent skill from https://github.com/tech-leads-club/agent-skills/tree/main/packages/skills-catalog/skills/(development)/rails-dev into .opencode/skills/rails-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rails-dev", 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-dev- GitHub stars
- 7k
- Token cost
- ~2.2k tokens
- SKILL.md length
- 665 words
- Files
- 25 (incl. references)
- Skills in repo
- 74
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Applies an opinionated Rails style to any Rails work: rich models, CRUD-only routes, state kept as records, schema constraints and very few dependencies.
- Designing a Rails data model, migration or association
- SKILL.md covers Core Philosophy, Reference Selection, Coding style and Sources
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Writing or reviewing controllers and routes that follow CRUD-only conventions
What it does
The skill loads a set of Rails conventions before any model, schema, route or code is discussed or written. Its philosophy puts business logic in models rather than service objects, prefers a new resource over a new action, records state as its own model instead of a boolean, and shares behavior through concerns.
It also favors small interfaces, inline code until repetition is real, bang methods with failures handled at the boundary, hard rules enforced as database constraints, and a database-backed stack of Solid Queue, Cache and Cable instead of Redis. Gems such as Devise, Pundit, RSpec and FactoryBot are avoided, and tests use Minitest with fixtures.
A table maps each task, such as models, controllers, routes, concerns, auth, migrations, tests or views, to a reference file, and the agent is told to read the matching file end to end before designing or reviewing anything.
When your agent uses it
- Designing a Rails data model, migration or association
- Writing or reviewing controllers and routes that follow CRUD-only conventions
- Writing Minitest tests with fixtures for a Rails app
- Replacing a boolean column with a state record
Example prompts
- “Add a way to archive projects in our Rails app, following the house conventions.”
- “Review this migration and model against our Rails conventions.”
- “Design the data model for comments and watchers on tickets.”
Requirements
- A Rails codebase
What it can do on your machine
Read from SKILL.md and the folder at commit 6df68d5. 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
No scripts in the folder and no shell commands in SKILL.md (its code samples are ruby).
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
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
Rails Conventions loads about 2.2k tokens when it runs, and up to ~41k if it reads all its reference files. Until then it costs about 223 tokens; SKILL.md has 665 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
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 665 words (~2,167 tokens).
“This table is an index, not the content. The conventions live in the reference files, not in this table, the codebase, or general Rails knowledge. Match the task to the rows below and read those files end to end before…”
- name
- rails-dev
- metadata.author
- William Calderipe - github.com/wcalderipe
- metadata.version
- 1.0.0
Files
SKILL.md and 24 other files (references) in packages/skills-catalog/skills/(development)/rails-dev of tech-leads-club/agent-skills.
- SKILL.md
- references/api.md
- references/async.md
- references/auth.md
- references/caching.md
- references/concerns.md
- references/crud.md
- references/error-handling.md
- references/events.md
- references/http-client.md
- references/jobs.md
- references/logging.md
- references/mailer.md
- references/migration.md
- references/model.md
- references/multi-tenant.md
- references/review.md
- references/routes.md
- references/state-records.md
- references/stimulus.md
- … and 5 more
Open the folder on GitHubat commit 6df68d5
Compare with similar skills
Rails Conventions 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 Conventions this skilltech-leads-club/agent-skills | 7k | — | ~2.2k | Automated safety check: Pass | Custom licence | |
| Database Migrationagulli/atlas-agents | 579 | — | ~702 | Automated safety check: Pass | MIT | |
| Moai Ref API Patternsmodu-ai/moai-adk | 1.2k | — | ~1.9k | Automated safety check: Pass | Apache-2.0 | |
| Safe Database Migration Patternsaffaan-m/ECC | 276k | — | ~3.3k | Automated safety check: Pass | MIT | |
| cmux Backend Rulesmanaflow-ai/cmux | 28k | 1 repos | ~682 | Automated safety check: Pass | Custom licence | |
| Saleor Django Schema Migrationsaleor/saleor | 23k | — | ~1k | Automated safety check: Pass | BSD-3-Clause |
Similar skills
Moai Ref API Patterns
modu-ai/moai-adk
REST/GraphQL API design patterns, error handling conventions, and input validation reference for backend development.
Safe Database Migration Patterns
affaan-m/ECC
Rules and examples for safe, reversible schema changes in production: zero-downtime column and index changes, large data backfills and ORM migration workflows.
cmux Backend Rules
manaflow-ai/cmux
Sets the backend TypeScript and Cloud VM rules for cmux: Effect-based services, thin route handlers, Postgres as source of truth, migrations and provider secrets.
Saleor Django Schema Migration
saleor/saleor
Generates and splits Django schema migrations for Saleor with manage.py makemigrations, enforcing one new model or one field change per migration file.
LangBot Core Development
langbot-app/LangBot
Covers developing the LangBot core backend and web UI: dev setup, repo layout, API auth types, adding endpoints, migrations and keeping the MCP server in step.
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Related
Categories
Questions about Rails Conventions
What does Rails Conventions do?
Applies an opinionated Rails style to any Rails work: rich models, CRUD-only routes, state kept as records, schema constraints and very few dependencies. The skill loads a set of Rails conventions before any model, schema, route or code is discussed or written. Its philosophy puts business logic in models rather than service objects, prefers a new resource over a new action, records state as its own model instead of a boolean, and shares behavior through concerns.
When should I use Rails Conventions?
Rails Conventions fits situations like: designing a Rails data model, migration or association; writing or reviewing controllers and routes that follow CRUD-only conventions; writing Minitest tests with fixtures for a Rails app; replacing a boolean column with a state record.
How do I install Rails Conventions in Claude Code?
Run `npx skills add tech-leads-club/agent-skills --skill rails-dev -a claude-code`. Or copy the skill folder (packages/skills-catalog/skills/(development)/rails-dev in tech-leads-club/agent-skills) into .claude/skills/rails-dev in your project. Claude Code loads it when a task matches its description.
How do I install Rails Conventions in Codex?
Run `npx skills add tech-leads-club/agent-skills --skill rails-dev -a codex`. Or copy the skill folder (packages/skills-catalog/skills/(development)/rails-dev in tech-leads-club/agent-skills) into .agents/skills/rails-dev in your project. Codex loads it when a task matches its description.
Can I use Rails Conventions 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 tech-leads-club/agent-skills --skill rails-dev -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-dev, .gemini/skills/rails-dev, .github/skills/rails-dev and .opencode/skills/rails-dev in your project.
What does Rails Conventions need to run?
SKILL.md names no scripts, command-line tools or credentials: Rails Conventions is instructions for the agent only. Our summary lists: A Rails codebase.
Does Rails Conventions access the network?
SKILL.md names 1 domain. As links in the text: github.com. This is read from the text; nothing was executed.
Is Rails Conventions 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 Conventions use?
Rails Conventions has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Rails Conventions use?
About 2.2k tokens (SKILL.md is roughly 8.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 39k tokens, read only when the agent opens those files.
What are the alternatives to Rails Conventions?
Skills that share tags, products or a category with Rails Conventions: Database Migration (agulli/atlas-agents, 579 stars), Moai Ref API Patterns (modu-ai/moai-adk, 1.2k stars), Safe Database Migration Patterns (affaan-m/ECC, 276k stars) and cmux Backend Rules (manaflow-ai/cmux, 28k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Rails Conventions?
tech-leads-club (a GitHub organization) maintains it in tech-leads-club/agent-skills, which has 7,043 GitHub stars. The repository holds 74 skills in this directory. The repository was last updated on October 8, 2026.
Source: tech-leads-club/agent-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.