remix

remix is a skill for Claude Code, Codex from pi0/vite-plugin-remix3. It costs 62 tokens per session (5,809 once invoked), scanned A, a copy of remix, MIT.

A development skill for building and reviewing Remix 3 web applications. Remix is a server-focused web framework for handling routes, requests, data, forms, authentication, and user interfaces.

In plain words
What is it for?
Use it when working on Remix routes, request handlers, middleware, data access, sessions, authentication, uploads, interface components, navigation, or tests.
Why use it?
It helps place each change in the correct Remix layer and avoid framework-specific mistakes.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/pi0/vite-plugin-remix3/remix
Any agent
npx skills add pi0/vite-plugin-remix3 --skill remix
Clone the repo
git clone --depth 1 https://github.com/pi0/vite-plugin-remix3

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.

agentmods badge for remix

README.md
[![agentmods](https://agentmods.dev/badge/skills/pi0/vite-plugin-remix3/remix.svg)](https://agentmods.dev/skills/pi0/vite-plugin-remix3/remix)
Your own site
<a href="https://agentmods.dev/skills/pi0/vite-plugin-remix3/remix"><img src="https://agentmods.dev/badge/skills/pi0/vite-plugin-remix3/remix.svg" alt="Measured on agentmods" height="20"></a>
Per session 62 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,809 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin 86% 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00062 $0.05809
Opus 5 $0.00031 $0.02905
Sonnet 5 $0.00012 $0.01162
Haiku 4.5 $0.00006 $0.00581

Measured 5d ago against content hash 9accc596705c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

remix scanned grade A with 1 finding 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 5d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- Prefer server and router tests first. Drive the app with `router.fetch(new Request(...))` and
Origin

This is a copy

86% identical to remix — 523 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.

starter/.agents/skills/remix/SKILL.md · 502 lines

How it starts

The opening of the file, as written. The whole thing — 502 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Build a Remix App

Use this skill for end-to-end Remix app work. It should help the agent choose the right layer first, reach for the right package, and avoid the most common Remix-specific mistakes.

What Remix Is

Remix 3 is a server-first web framework built on Web APIs such as Request, Response, URL, and FormData. All packages ship from a single npm package, remix, and are imported via subpath. There is no top-level remix import.

A Remix app has four main pieces:

  • Routes in app/routes.ts define the typed URL contract and power href() generation.
  • Controllers and actions implement that contract and return Response objects.
  • Middleware composes request lifecycle behavior and populates typed context via context.set(Key, value).
  • Components render UI with remix/ui. This is not React. A component receives a handle, reads current props from handle.props, and returns a render function.

When To Use This Skill

Use this skill for:

  • new features or refactors that touch routing, controllers, middleware, data, auth, sessions, UI, or tests
  • reviewing Remix app code for correctness, architecture, or framework usage
  • answering "how should this be structured in Remix?" questions
  • finding the right package, reference doc, or default pattern for a task

Load Only The References You Need

Classify the task first, then load the smallest useful reference set. Each reference file starts with a "What This Covers" section that lists the topics inside it — read that first to confirm the file is relevant before reading the rest.

Use the table below to find candidates. Loading more than two or three files at once is usually a sign that the task hasn't been narrowed enough yet.

Task involves... Start with
Defining URLs, writing controllers and actions, returning responses references/routing-and-controllers.md
Composing the request lifecycle, ordering middleware, bridging to a server references/middleware-and-server.md
Compiling and serving browser modules, asset URL namespaces, preloads references/assets-and-browser-modules.md
Parsing input, validating with schemas, defining tables, querying, migrations references/data-and-validation.md
Per-browser state, login flows, route protection, identity references/auth-and-sessions.md
Component setup, state, lifecycle, updates, queueTask, context references/component-model.md
Event handlers, styles, refs, click/key behavior, simple animations references/mixins-styling-events.md
clientEntry, run, <Frame>, navigation, <head> references/hydration-frames-navigation.md
Router tests, component tests, test isolation references/testing-patterns.md
Spring physics, tweens, layout transitions references/animate-elements.md
Authoring custom reusable mixins references/create-mixins.md

Read the full file on GitHub · 502 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.

  1. 5d ago First seen · 502 lines · 62 tokens per session scan A 9accc596705c

Subscribe to this mod's changes

remix is a skill published in the GitHub repository pi0/vite-plugin-remix3 (23 stars, last pushed 4mo ago), licensed MIT. It adds 62 tokens to every session and 5,809 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). It is 86% identical to remix, differing in 523 lines, and is treated as a copy.

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