What is modern-inertia?

A guide for building Laravel applications with React through Inertia.js version 3, a tool that connects server-side pages to a React interface. It also covers React 19 integration and moving from older Inertia patterns.

Use it when creating, reviewing, refactoring, or migrating Laravel and React code that uses Inertia v3.

It helps developers avoid outdated setup and data-fetching approaches while handling form updates, errors, URL fragments, and optimistic interface changes consistently.

modern-inertia — Skill for Claude Code and Codex by PURPLE-ORCA/skills

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 PURPLE-ORCA/skills --skill modern-inertia

Clone the repo

git clone --depth 1 https://github.com/PURPLE-ORCA/skills

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/purple-orca/skills/modern-inertia/github.svg)](https://agentmods.dev/skills/purple-orca/skills/modern-inertia)

Your own site

<a href="https://agentmods.dev/skills/purple-orca/skills/modern-inertia"><img src="https://agentmods.dev/badge/skills/purple-orca/skills/modern-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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/purple-orca/skills/modern-inertia"><img src="https://agentmods.dev/badge/skills/purple-orca/skills/modern-inertia.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 92 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,367 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 original No closer match found 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	$0.00092	$0.01367
Opus 5.5	$0.00037	$0.00547
Sonnet 5.5	$0.00018	$0.00273
Haiku 4.5	$0.00009	$0.00137

Measured 2mo ago against content hash fce59a994f0f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

modern-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 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.

laravel/modern-inertia/SKILL.md · 116 lines

How it starts

The opening of the file, as written. The whole thing — 116 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Modern Inertia (v3.x) Complete Guide

This skill covers Inertia v3 (Beta) and its integration with React 19. Every section follows: what it is → DO this → DON'T do that → migration path.

Critical DO / DON'T Quick Reference

DO (Modern Inertia v3)	DON'T (Legacy v2/Anti-pattern)	Why
Use the `@inertiajs/vite` plugin for setup	Manually configure `resolve` and SSR entry points	The plugin auto-resolves `./Pages` and wires up SSR silently
Use `useHttp()` for standalone API calls	Reach for `axios` or `fetch` for background data	`useHttp` gives reactive state (progress, errors) without router visits
Chain `.optimistic()` on forms or router visits	Build manual `useState` rollbacks with try/catch	v3 has native optimistic UI with automatic rollback on server/validation errors
Use `preserveErrors: true` on partial reloads	Manually stash errors in local state	Prevents wiping out existing form validation when refreshing a component
Use `preserveFragment: true`	Rely on custom JS to scroll to `#hashes` after redirect	v3 natively supports keeping URL hash fragments intact across redirects
Pass `layout` inside `createInertiaApp`	Manually wrap every single page in a `<Layout>`	v3 allows defining a global default layout at the app root
Use `router.cancelAll()` to abort	Use `router.cancel()`	`cancelAll` handles sync, async, and prefetch requests

Core Architecture & UX Changes

1. Zero-Config SSR via Vite

You no longer need a separate ssr.tsx file, nor do you need to manually resolve page components in your entry point. SSR works out of the box during bun run dev.

// In vite.config.js: plugins: [laravel(...), react(), inertia()]
// In app.tsx:
import { createInertiaApp } from '@inertiajs/react';

createInertiaApp({
  // Optional: Set a default layout for all pages here
  setup({ el, App, props }) {
    createRoot(el).render(<App {...props} />);
  },
});

2. Standalone HTTP Requests (`useHttp`)

For requests that shouldn't trigger a page visit (e.g., live search). It provides the exact same developer experience as useForm, but returns data instead of a router visit.

Read the full file on GitHub · 116 lines

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 · 116 lines · 92 tokens per session scan A fce59a994f0f

Subscribe to this mod's changes

modern-inertia is a skill published in the GitHub repository PURPLE-ORCA/skills (2 stars, last pushed 1mo ago), licensed MIT. It adds 92 tokens to every session and 1,367 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Backend and APIs Frontend React

modern-inertia next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
modern-inertiaPURPLE-ORCA/skills	Skill	2	1mo ago	MIT	A	92	Claude Code, Codex
langbot-devlangbot-app/LangBot	Skill	19k	today	Apache-2.0	A	136	Claude Code, Codex
trigger-realtime-and-frontendtriggerdotdev/trigger.dev	Skill	17k	4d ago	Apache-2.0	A	148	Claude Code, Codex
devtools-event-clientTanStack/devtools	Skill	512	today	MIT	A	79	Claude Code, Codex
airflow-pluginsastronomer/agents	Skill	458	5d ago	Apache-2.0	A	147	Claude Code
walkeros-create-destinationelbwalker/walkerOS	Skill	349	3d ago	MIT	A	77	Claude Code
walkeros-create-sourceelbwalker/walkerOS	Skill	349	3d ago	MIT	A	65	Claude Code