What is vital CLAUDE.md?

Project instructions for Vital, a React starter project built with Vite, TypeScript, and Tailwind CSS, with tools for code quality and pre-commit checks.

Use them when adding or updating components, styles, dependencies, tests, or quality checks in the Vital frontend.

They explain the project's technology versions, folder structure, styling approach, and coding conventions so an agent can make compatible changes.

How jvidalv/vital configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to jvidalv/vital. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/jvidalv/vital/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/jvidalv/vital

Made for: Claude Code.

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/instructions/jvidalv/vital/claude-md/github.svg)](https://agentmods.dev/instructions/jvidalv/vital/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/jvidalv/vital/claude-md"><img src="https://agentmods.dev/badge/instructions/jvidalv/vital/claude-md/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/instructions/jvidalv/vital/claude-md"><img src="https://agentmods.dev/badge/instructions/jvidalv/vital/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 4,008 This file is loaded in full into every session.

When invoked 4,008 The same file — it is already loaded in full.

Security scan C 1 finding. 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	$0.04008	$0.04008
Opus 5.5	$0.01603	$0.01603
Sonnet 5.5	$0.00802	$0.00802
Haiku 4.5	$0.00401	$0.00401

Measured 1mo ago against content hash 734cf87184a5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

vital CLAUDE.md scanned grade C 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 1mo 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.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

3. Clear cache: `rm -rf node_modules/.vite`

CLAUDE.md · 498 lines

How it starts

The opening of the file, as written. The whole thing — 498 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Claude AI Assistant Guide

This document helps AI assistants like Claude understand and work effectively with the Vital project.

Project Overview

Vital is a modern React starter template built with the latest versions of Vite, React, TypeScript, and Tailwind CSS. It follows Atomic Design principles and includes comprehensive code quality tools.

Tech Stack

Exact versions live in package.json; majors below.

Core Framework

Vite 8 - Next-generation frontend build tool
@vitejs/plugin-react 6 - Official React plugin for Vite
React 19 - Latest React with improved performance
TypeScript 7 - Native compiler, strict type checking enabled
Node.js: 22.22.1 or newer (see engines)
Package Manager: Yarn 1 (classic, yarn.lock)

Styling

Tailwind CSS 4 - Latest version with CSS-based configuration (vendor prefixes included, no Autoprefixer needed)
@tailwindcss/forms - Form styling plugin
PostCSS 8

Code Quality

Oxlint - Linting (TypeScript, React and React Hooks rules)
Oxfmt - Code formatting (Prettier-compatible)
lint-staged - Lint and format staged files
Commitlint - Conventional commits enforcement

Additional Libraries

@heroicons/react 2 - Beautiful SVG icons

Project Structure

vital/
├── public/
│   ├── favicon.svg
│   └── manifest.webmanifest
├── src/
│   ├── app/
│   │   └── app.tsx                    # Main App component
│   ├── components/                     # Atomic Design architecture
│   │   ├── atoms/                      # Basic building blocks
│   │   │   ├── button/
│   │   │   │   ├── button.tsx
│   │   │   │   └── index.ts
│   │   │   └── logos/
│   │   ├── molecules/                  # Simple component groups
│   │   │   └── copy-button/
│   │   ├── organisms/                  # Complex components
│   │   │   └── card/
│   │   └── templates/                  # Page layouts (not created yet)
│   ├── hooks/                          # Custom React hooks (not created yet)
│   ├── index.css                       # Global styles + Tailwind
│   ├── main.tsx                        # Entry point
│   └── vite-env.d.ts
├── .oxfmtrc.json                       # Oxfmt config
├── .oxlintrc.json                      # Oxlint config
├── commitlint.config.js
├── index.html                          # HTML entry
├── lint-staged.config.js
├── postcss.config.js
├── tsconfig.json                       # Root TS config (project references)
├── tsconfig.app.json                   # App TS config
├── tsconfig.node.json                  # Node/Vite TS config
└── vite.config.ts

Read the full file on GitHub · 498 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.

1mo ago Changed · +61 lines · +545 tokens per session 734cf87184a5
2mo ago First seen · 437 lines · 3,463 tokens per session scan C cbb7100668f7

Subscribe to this mod's changes

vital CLAUDE.md is an instructions file published in the GitHub repository jvidalv/vital (291 stars, last pushed 1mo ago), licensed MIT. It adds 4,008 tokens to every session, about $0.0160 per session on Opus 5.5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Frontend Languages React TypeScript eslint postcss tailwindcss vite

vital CLAUDE.md next to 6 instructions from other repositories
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vital: Instructions file for Claude Code