What is inertia-rails-setup?

A one-time setup assistant for projects built with Inertia Rails, a way to connect Rails server code to React, Vue, or Svelte pages.

Checking Gemfile and package.json, offering supported dependency installations, and generating or updating the Inertia Rails section of CLAUDE.md, the instructions file used by coding agents.

It detects the project’s Rails and frontend setup, suggests related dependencies, and records which coding patterns apply so later work follows the project’s actual stack.

inertia-rails-setup — Skill for Claude Code and Codex by thecodingend

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add thecodingend/rails-starter --skill inertia-rails-setup

Clone the repo

git clone --depth 1 https://github.com/thecodingend/rails-starter

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/thecodingend/rails-starter/inertia-rails-setup/github.svg)](https://agentmods.dev/skills/thecodingend/rails-starter/inertia-rails-setup)

Your own site

<a href="https://agentmods.dev/skills/thecodingend/rails-starter/inertia-rails-setup"><img src="https://agentmods.dev/badge/skills/thecodingend/rails-starter/inertia-rails-setup/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/thecodingend/rails-starter/inertia-rails-setup"><img src="https://agentmods.dev/badge/skills/thecodingend/rails-starter/inertia-rails-setup.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 98 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,780 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin 100% copy Near-identical to another mod in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00098	$0.01780
Opus 5.5	$0.00039	$0.00712
Sonnet 5.5	$0.00020	$0.00356
Haiku 4.5	$0.00010	$0.00178

Measured 2mo ago against content hash cba1da55d1a5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

inertia-rails-setup scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

100% identical to inertia-rails-setup — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.agents/skills/inertia-rails-setup/SKILL.md · 121 lines

How it starts

The opening of the file, as written. The whole thing — 121 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Inertia Rails Project Setup

Detect stack, offer recommended deps, generate CLAUDE.md configuration.

Run once per project. Re-run when the stack changes.

NEVER:

Run setup without inertia_rails gem in Gemfile — all skills assume it exists. If missing, tell the user to install it first.
Overwrite existing ## Inertia Rails Stack in CLAUDE.md without reading it — the user may have manual customizations. Replace only the auto-generated block.
Add @/ resolve aliases to vite.config.ts — vite-plugin-ruby already provides them. Only add to tsconfig.json.
Recommend alba-inertia if the project uses jbuilder AND the user hasn't expressed interest in switching — suggest it, but don't push. You CAN still suggest it if the project has blueprinter (alba is a direct upgrade path).
Generate CLAUDE.md blocks for skills the user doesn't have installed — saying "alba-inertia skill does NOT apply" is correct; saying "use alba-inertia" when the gem is absent is wrong.

Step 1: Detect Current Stack

Read Gemfile (NOT Gemfile.lock) and package.json and check for:

Look for	Means
`inertia_rails` gem	Inertia Rails installed (required)
`@inertiajs/react` in package.json	React frontend
`@inertiajs/vue3` in package.json	Vue 3 frontend
`@inertiajs/svelte` in package.json	Svelte frontend
`alba-inertia` gem	Convention-based rendering active
`alba` + `typelizer` gems (no `alba-inertia`)	Alba serialization without convention rendering
`pagy` gem	Pagy pagination
`kaminari` gem	Kaminari pagination
`rspec-rails` gem	RSpec testing
`js-routes` gem	Typed frontend path helpers
`devise` gem	Devise authentication
`pundit` gem	Pundit authorization
`action_policy` gem	Action Policy authorization
`components.json` in root exists	shadcn installed (React: shadcn/ui, Vue: shadcn-vue, Svelte: shadcn-svelte)

Present detected stack, then offer deps that unlock skill features but aren't installed yet. Use AskUserQuestion with multiSelect for the recommendations.

Read the full file on GitHub · 121 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

references/claude-md-templates.md 2.9 KB

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 121 lines · 98 tokens per session scan A cba1da55d1a5

Subscribe to this mod's changes

inertia-rails-setup is a skill published in the GitHub repository thecodingend/rails-starter (5 stars, last pushed 2mo ago), licensed MIT. It adds 98 tokens to every session and 1,780 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to inertia-rails-setup, differing in 0 lines, and is treated as a copy.

inertia-rails-setup next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
inertia-rails-setupthecodingend/rails-starter	Skill	5	2mo ago	MIT	A	98	Claude Code, Codex
imagegenopenai/codex	Skill	133k	yesterday	Apache-2.0	A	113	Codex
playwright-climicrosoft/playwright	Skill	99k	yesterday	Apache-2.0	A	19	Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginners	Skill	79k	4d ago	MIT	A	200	Claude Code, Codex
systematic-debuggingobra/superpowers	Skill	313k	3d ago	MIT	A	21	Claude Code
next-cache-components-adoptionvercel/next.js	Skill	143k	yesterday	MIT	A	95	Claude Code
next-partial-prefetching-adoptionvercel/next.js	Skill	143k	yesterday	MIT	A	103	Claude Code