# Rails Diff

> Use this tool when you need to identify changes between Rails versions or compare the output of generating new applications across different versions. It solves problems related to Rails version compatibility and upgrade planning by providing insights into version differences. The tool takes Rails version inputs and outputs detailed comparisons of changes, making it ideal for developers upgrading or migrating Rails applications.

Canonical page: https://skillsregistry.net/skills/alexzeitler-rails-diff  
JSON: https://api.skillsregistry.net/v1/skills/alexzeitler-rails-diff

## Description

Exposes Rails version differences from the railsdiff/rails-new-output repository through GitHub API integration, enabling developers to compare what changes between Rails versions when generating new applications.

## Trust

- **Trust score (0–1):** 1.00
- **Verification tier:** verified
- **Last scanned:** 2026-09-19

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** version-control
- **Updated:** 2026-09-19

## Source

- **Source listing:** [PulseMCP](https://www.pulsemcp.com/servers/alexzeitler-rails-diff)
- **Repository:** <https://github.com/alexzeitler/rails-diff-mcp>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "alexzeitler-rails-diff"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/alexzeitler-rails-diff` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/alexzeitler-rails-diff/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt