rails-dev SKILL.md skillA
rails-dev from tech-leads-club/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add tech-leads-club/agent-skills/rails-dev@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- tech-leads-club/agent-skills
- Path
packages/skills-catalog/skills/(development)/rails-dev/SKILL.md- Versions recorded
- 4
- Latest version
- v1.0.0, committed Jul 17, 2026
- First version recorded
- Jul 17, 2026
- Size
- 8,670 bytes
- Repository stars
- 7,124
- License
- a license file GitHub does not identify
Opinionated Rails conventions: rich models, concerns, CRUD-everything, state-as-records, minimal dependencies, Minitest with fixtures. Load this skill BEFORE any code-level thinking, not only before editing a file. It is required the moment a task touches Rails code in ANY way: designing or even just discussing a data model, schema, migration, entity, association, field, validation, class, or method name; writing, planning, reviewing, analyzing, testing, debugging, or refactoring; or proposing…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Rails Conventions ## Core Philosophy - **Rich models** - Business logic lives in models, not service objects - **Everything is CRUD** - New resource over new action (`resource :closure` not `post :close`) - **State as records** - `Closure` model instead of `closed: boolean` - **Concerns for composition** - `Closeable`, `Watchable`, `Commentable` - **Explicit over clever** - Inline until repetition is real; an abstraction earns its place, it isn't built on speculation - **Small interfaces** - No public method without a caller - **Let it crash** - Bang methods (`create!`), handle failures at the boundary, not by pre-guarding (`references/error-handling.md`) - **Invariants in the schema** - Hard rules (presence, uniqueness, ranges) are NOT NULL / unique / check constraints; validations are for user-facing messages, not the source of truth. References stay soft: no foreign keys, integrity at the model layer - **Minimal dependencies** - Build it yourself before reaching for gems. No Devise, Pundit, RSpec, FactoryBot, ViewComponent, service/form objects, or decorators - **Database-backed** - Solid Queue/Cache/Cable, no Redis …
Read the whole file at its exact version.
How to install
mdr add tech-leads-club/agent-skills/rails-dev@sha256:40b0f384b76018aeThe line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_ixnptxx3iriawmvz)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, all committed on Jul 17, 2026.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.0 latest | 2026-07-17 | 6e56a72 | 8,670 B | A | view · diff |
| v1.0.0 | 2026-07-17 | c16eedc | 8,666 B | A | view · diff |
| v1.0.0 | 2026-07-17 | cfe8dbc | 8,171 B | A | view · diff |
| v1.0.0 | 2026-07-17 | f779606 | 8,589 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (8670 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
tech-leads-club/agent-skills · 7,124 stars · license a license file GitHub does not identify · pushed 2026-11-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ixnptxx3iriawmvz GET https://markdownregistry.com/api/v1/resolve?ref=tech-leads-club/agent-skills/rails-dev GET https://markdownregistry.com/api/v1/blob/40b0f384b76018ae6b667973eac308295c03d671786ce786b03cb8b2119f2c7d
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.