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.
npx skills add thecodingend/rails-starter --skill shadcn-inertiagit clone --depth 1 https://github.com/thecodingend/rails-starterWrote 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.
[](https://agentmods.dev/skills/thecodingend/rails-starter/shadcn-inertia)<a href="https://agentmods.dev/skills/thecodingend/rails-starter/shadcn-inertia"><img src="https://agentmods.dev/badge/skills/thecodingend/rails-starter/shadcn-inertia/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.
<a href="https://agentmods.dev/skills/thecodingend/rails-starter/shadcn-inertia"><img src="https://agentmods.dev/badge/skills/thecodingend/rails-starter/shadcn-inertia.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00095 | $0.01862 |
| Opus 5 | $0.00048 | $0.00931 |
| Sonnet 5 | $0.00019 | $0.00372 |
| Haiku 4.5 | $0.00010 | $0.00186 |
Grade A, and why
shadcn-inertia 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 9d 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.
This is a copy
100% identical to shadcn-inertia — 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.
How it starts
The opening of the file, as written. The whole thing — 178 lines — stays where its author put it; the contents beside it link to each section on GitHub.
shadcn/ui for Inertia Rails
shadcn/ui patterns adapted for Inertia.js + Rails + React. NOT Next.js.
Before using a shadcn example, ask:
- Does it use
react-hook-form+zod? → Replace with Inertia<Form>+nameattributes. Inertia handles CSRF, errors, redirects, processing state — react-hook-form would fight all of this. - Does it use
'use client'? → Remove it. Inertia has no RSC — all components are client components. - Does it use
next/link,next/head,useRouter()? → Replace with Inertia<Link>,<Head>,router.
Key Differences from Next.js Defaults
| shadcn default (Next.js) | Inertia equivalent |
|---|---|
'use client' directive |
Remove — not needed (no RSC) |
react-hook-form + zod |
Inertia <Form> component |
FormField, FormItem, FormMessage |
Plain <Input name="..."> + errors.field |
next-themes |
CSS class strategy + @custom-variant |
useRouter() (Next) |
router from @inertiajs/react |
next/link |
<Link> from @inertiajs/react |
next/head |
<Head> from @inertiajs/react |
NEVER use shadcn's FormField, FormItem, FormLabel, FormMessage components —
they depend on react-hook-form's useFormContext internally and will crash without it.
Use plain shadcn Input/Label/Select with name attributes inside Inertia <Form>,
and render errors from the render function's errors object (see examples below).
Setup
npx shadcn@latest init. add @/ resolve aliases to tsconfig.json if not present,
Do NOT add @/ resolve aliases to vite.config.ts — vite-plugin-ruby already provides them.
shadcn Inputs in Inertia <Form>
Use plain shadcn Input/Label/Button with name attributes inside Inertia <Form>.
See inertia-rails-forms skill for full <Form> API — this section covers shadcn-specific adaptation only.
The key pattern: Replace shadcn's FormField/FormItem/FormMessage with plain
components + manual error display:
What ships with it
2 files 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.
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.
- 9d ago First seen · 178 lines · 95 tokens per session scan A 11e779f05ee4
shadcn-inertia is a skill published in the GitHub repository thecodingend/rails-starter (5 stars, last pushed 7d ago), licensed MIT. It adds 95 tokens to every session and 1,862 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to shadcn-inertia, differing in 0 lines, and is treated as a copy.
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