PixelPilot: Instructions file for GitHub Copilot

vscode/.github/instructions/uiux-error-pages.instructions.md

PixelPilot uiux-error-pages.instructions.md is an instructions file for GitHub Copilot from dev-lou/PixelPilot. It costs 4,141 tokens per session, scanned A, original, MIT.

A set of custom web error-page templates for statuses such as 404, 403, 429, and 500.

In plain words
What is it for?
Use it to create token-aware error pages for Laravel or similar web projects, including not-found, forbidden, rate-limit, server-error, and maintenance pages.
Why use it?
It gives visitors useful error screens that share the site's navigation, footer, and visual design instead of showing unrelated defaults.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file.

This is dev-lou/PixelPilot's own configuration. It tells GitHub Copilot how to work on PixelPilot itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything PixelPilot configures →

Reuse

Borrowing it

Nothing to install: this file belongs to dev-lou/PixelPilot. 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/dev-lou/PixelPilot/main/vscode/.github/instructions/uiux-error-pages.instructions.md
Clone the repo
git clone --depth 1 https://github.com/dev-lou/PixelPilot

Made for: GitHub Copilot.

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 PixelPilot uiux-error-pages.instructions.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/dev-lou/pixelpilot/uiux-error-pages/github.svg)](https://agentmods.dev/instructions/dev-lou/pixelpilot/uiux-error-pages)
Your own site
<a href="https://agentmods.dev/instructions/dev-lou/pixelpilot/uiux-error-pages"><img src="https://agentmods.dev/badge/instructions/dev-lou/pixelpilot/uiux-error-pages/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.

agentmods 80×15 button for PixelPilot uiux-error-pages.instructions.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/dev-lou/pixelpilot/uiux-error-pages"><img src="https://agentmods.dev/badge/instructions/dev-lou/pixelpilot/uiux-error-pages.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 4,141 This file is loaded in full into every session.
When invoked 4,141 The same file — it is already loaded in full.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.04141 $0.04141
Opus 5.5 $0.01656 $0.01656
Sonnet 5.5 $0.00828 $0.00828
Haiku 4.5 $0.00414 $0.00414

Measured 2mo ago against content hash 665d93889666, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

PixelPilot uiux-error-pages.instructions.md 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.

vscode/.github/instructions/uiux-error-pages.instructions.md · 551 lines

How it starts

The opening of the file, as written. The whole thing — 551 lines — stays where its author put it; the contents beside it link to each section on GitHub.

UI/UX Error Pages

Custom error pages that match your design system. Professional, helpful, and token-aware.


OVERVIEW

This skill covers custom error pages:

  • 404 - Page Not Found
  • 403 - Forbidden
  • 419 - Session Expired (Laravel)
  • 429 - Too Many Requests
  • 500 - Server Error
  • 503 - Service Unavailable

All pages share navbar/footer and use design tokens.


LARAVEL STRUCTURE

resources/views/
├── errors/
│   ├── 404.blade.php
│   ├── 403.blade.php
│   ├── 419.blade.php
│   ├── 429.blade.php
│   ├── 500.blade.php
│   ├── 503.blade.php
│   └── layout.blade.php
└── layouts/
    └── app.blade.php

ERROR LAYOUT

{{-- resources/views/errors/layout.blade.php --}}
<!DOCTYPE html>
<html lang="{{ str_replace('_', '-', app()->getLocale()) }}" data-theme="light">
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>@yield('title') — {{ config('app.name') }}</title>
    <link rel="stylesheet" href="{{ asset('css/app.css') }}">
    
    {{-- Error page specific styles --}}
    <style>
        .error-page {
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        
        .error-page__content {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: var(--space-8);
        }
        
        .error-page__container {
            max-width: 560px;
            text-align: center;
        }
        
        .error-page__code {
            font-size: clamp(6rem, 20vw, 10rem);
            font-weight: 800;
            line-height: 1;
            color: var(--muted);
            opacity: 0.5;
            margin-bottom: var(--space-4);
        }
        
        .error-page__title {
            font-size: var(--text-3xl);
            font-weight: 700;
            color: var(--text);
            margin-bottom: var(--space-4);
        }
        
        .error-page__message {
            font-size: var(--text-lg);
            color: var(--text-secondary);
            margin-bottom: var(--space-8);
            line-height: 1.6;
        }
        
        .error-page__actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: var(--space-4);
        }
        
        .error-page__search {
            margin-top: var(--space-8);
            max-width: 400px;
            margin-inline: auto;
        }
        
        .error-page__search-form {
            display: flex;
            gap: var(--space-2);
        }
        
        .error-page__search-input {
            flex: 1;
            padding: var(--space-3) var(--space-4);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            font-size: var(--text-base);
        }
        
        .error-page__illustration {
            max-width: 300px;
            margin: 0 auto var(--space-8);
        }
        
        .error-page__illustration svg {
            width: 100%;
            height: auto;
        }
    </style>
</head>
<body class="error-page">
    {{-- Include shared navbar --}}
    @include('partials.navbar')
    
    <main class="error-page__content">
        <div class="error-page__container">
            @yield('content')
        </div>
    </main>
    
    {{-- Include shared footer --}}
    @include('partials.footer')
    
    <script src="{{ asset('js/app.js') }}"></script>
</body>
</html>

Read the full file on GitHub · 551 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. 2mo ago First seen · 551 lines · 4,141 tokens per session scan A 665d93889666

Subscribe to this mod's changes

PixelPilot uiux-error-pages.instructions.md is an instructions file published in the GitHub repository dev-lou/PixelPilot (2 stars, last pushed 7mo ago), licensed MIT. It adds 4,141 tokens to every session, about $0.0166 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.

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