rails-upgrade SKILL.md skillA
rails-upgrade from ombulabs/claude-code_rails-upgrade-skill is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ombulabs/claude-code_rails-upgrade-skill/rails-upgrade@git:20261012.91f26c7Pins git:20261012.91f26c7 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ombulabs/claude-code_rails-upgrade-skill
- Path
rails-upgrade/SKILL.md- Versions recorded
- 15
- Latest version
- git:20261012.91f26c7, committed Oct 12, 2026
- First version recorded
- May 5, 2026
- Size
- 11,229 bytes
- Repository stars
- 398
- License
- MIT
Analyzes Rails applications and generates comprehensive upgrade reports with breaking changes, deprecations, and step-by-step migration guides for Rails 2.3 through 8.1. Use when upgrading Rails applications, planning multi-hop upgrades, querying version-specific changes, or answering what stands between the app and the next Rails version. Based on FastRuby.io methodology and "The Complete Guide to Upgrade Rails" ebook.
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 Upgrade Assistant Skill ## Skill Identity - **Name:** Rails Upgrade Assistant - **Purpose:** Intelligent Rails application upgrades from 2.3 through 8.1 - **Skill Type:** Modular with external workflows and examples - **Upgrade Strategy:** Sequential only (no version skipping) - **Methodology:** Based on FastRuby.io upgrade best practices and "The Complete Guide to Upgrade Rails" ebook - **Attribution:** Content based on "The Complete Guide to Upgrade Rails" by FastRuby.io (OmbuLabs) --- ## Terminology | Term | Meaning | Where | |------|---------|-------| | **Workflow** | One numbered unit of the upgrade flow, one file | `workflows/<NN>-<name>-workflow.md` | | **Step** | A `Step N` header inside a workflow file | inside the workflow | | **Reference** | Material loaded on demand: lookup tables, playbooks, conditional branches | `references/<name>-reference.md` | …
Read the whole file at its exact version.
How to install
mdr add ombulabs/claude-code_rails-upgrade-skill/rails-upgrade@sha256:792653ee07a09a2eThe line at the top of this page pins the label git:20261012.91f26c7, 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_tatfdhvis3czianp)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 15 versions of this file, between May 5, 2026 and Oct 12, 2026, about one every 11 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261012.91f26c7 latest | 2026-10-12 | 91f26c7 | 11,229 B | A | view · diff |
| git:20261012.d1a7de7 | 2026-10-12 | d1a7de7 | 11,232 B | A | view · diff |
| git:20261012.8450598 | 2026-10-12 | 8450598 | 11,444 B | A | view · diff |
| git:20261012.9c9430c | 2026-10-12 | 9c9430c | 10,848 B | A | view · diff |
| git:20260928.9da5787 | 2026-09-28 | 9da5787 | 10,867 B | A | view · diff |
| git:20260919.d112564 | 2026-09-19 | d112564 | 10,626 B | A | view · diff |
| git:20260919.aa2e8e0 | 2026-09-19 | aa2e8e0 | 10,648 B | A | view · diff |
| git:20260919.63d24b5 | 2026-09-19 | 63d24b5 | 10,440 B | A | view · diff |
| git:20260919.f85199d | 2026-09-19 | f85199d | 10,440 B | A | view · diff |
| git:20260918.24f5726 | 2026-09-18 | 24f5726 | 10,420 B | A | view · diff |
| git:20260712.4fdd6bb | 2026-07-12 | 4fdd6bb | 30,379 B | A | view · diff |
| git:20260608.6ae3f70 | 2026-06-08 | 6ae3f70 | 30,181 B | A | view · diff |
| git:20260505.722d1a4 | 2026-05-05 | 722d1a4 | 29,575 B | A | view · diff |
| git:20260505.52868e6 | 2026-05-05 | 52868e6 | 28,193 B | A | view · diff |
| git:20260505.60365f8 | 2026-05-05 | 60365f8 | 27,698 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 (11229 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
ombulabs/claude-code_rails-upgrade-skill · 398 stars · license MIT · pushed 2026-11-04 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_tatfdhvis3czianp GET https://markdownregistry.com/api/v1/resolve?ref=ombulabs/claude-code_rails-upgrade-skill/rails-upgrade GET https://markdownregistry.com/api/v1/blob/792653ee07a09a2e74817da2274c419642ebaf3fa13ec9bfd079fd64b564f88d
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.