What is webdev101 copilot-instructions.md?

A set of project instructions for rebuilding websites as Next.js applications, using a ready-made interface and styling setup. It also records the project’s tools, commands, and coding rules.

Use it when reverse-engineering websites, starting the development server, checking code, or preparing a production build in this specific Next.js project.

It gives coding agents the project context they need and warns them that this version of Next.js may differ from older examples. This reduces incorrect code and inconsistent changes.

How Smithaker10/webdev101 configures GitHub Copilot

Reuse

Borrowing it

Nothing to install: this file belongs to Smithaker10/webdev101. 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/Smithaker10/webdev101/master/.github/copilot-instructions.md

Clone the repo

git clone --depth 1 https://github.com/Smithaker10/webdev101

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/smithaker10/webdev101/copilot-instructions/github.svg)](https://agentmods.dev/instructions/smithaker10/webdev101/copilot-instructions)

Your own site

<a href="https://agentmods.dev/instructions/smithaker10/webdev101/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/smithaker10/webdev101/copilot-instructions/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/smithaker10/webdev101/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/smithaker10/webdev101/copilot-instructions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,699 This file is loaded in full into every session.

When invoked 1,699 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 100% 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.

Model	Per session	Once invoked
Fable 5.1	$0.01699	$0.01699
Opus 5.5	$0.00680	$0.00680
Sonnet 5.5	$0.00340	$0.00340
Haiku 4.5	$0.00170	$0.00170

Measured 2mo ago against content hash 87f295f765e4, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

webdev101 copilot-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.

Origin

This is a copy

100% identical to ai-website-cloner copilot-instructions.md — 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.

.github/copilot-instructions.md · 148 lines

How it starts

The opening of the file, as written. The whole thing — 148 lines — stays where its author put it; the contents beside it link to each section on GitHub.

This is NOT the Next.js you know

This version has breaking changes — APIs, conventions, and file structure may all differ from your training data. Read the relevant guide in node_modules/next/dist/docs/ before writing any code. Heed deprecation notices.

Website Reverse-Engineer Template

What This Is

A reusable template for reverse-engineering any website into a clean, modern Next.js codebase using AI coding agents. The Next.js + shadcn/ui + Tailwind v4 base is pre-scaffolded — just run /clone-website <url1> [<url2> ...].

Tech Stack

Framework: Next.js 16 (App Router, React 19, TypeScript strict)
UI: shadcn/ui (Radix primitives, Tailwind CSS v4, cn() utility)
Icons: Lucide React (default — will be replaced/supplemented by extracted SVGs)
Styling: Tailwind CSS v4 with oklch design tokens
Deployment: Vercel

Commands

npm run dev — Start dev server
npm run build — Production build
npm run lint — ESLint check
npm run typecheck — TypeScript check
npm run check — Run lint + typecheck + build

Code Style

TypeScript strict mode, no any
Named exports, PascalCase components, camelCase utils
Tailwind utility classes, no inline styles
2-space indentation
Responsive: mobile-first

Design Principles

Pixel-perfect emulation — match the target's spacing, colors, typography exactly
No personal aesthetic changes during emulation phase — match 1:1 first, customize later
Real content — use actual text and assets from the target site, not placeholders
Beauty-first — every pixel matters

Project Structure

src/
  app/              # Next.js routes
  components/       # React components
    ui/             # shadcn/ui primitives
    icons.tsx       # Extracted SVG icons as React components
  lib/
    utils.ts        # cn() utility (shadcn)
  types/            # TypeScript interfaces
  hooks/            # Custom React hooks
public/
  images/           # Downloaded images from target site
  videos/           # Downloaded videos from target site
  seo/              # Favicons, OG images, webmanifest
docs/
  research/         # Inspection output (design tokens, components, layout)
  design-references/ # Screenshots and visual references
scripts/            # Asset download scripts

Read the full file on GitHub · 148 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 · 148 lines · 1,699 tokens per session scan A 87f295f765e4

Subscribe to this mod's changes

webdev101 copilot-instructions.md is an instructions file published in the GitHub repository Smithaker10/webdev101 (2 stars, last pushed 4mo ago), licensed MIT. It adds 1,699 tokens to every session, about $0.0068 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to ai-website-cloner copilot-instructions.md, differing in 0 lines, and is treated as a copy.

Frontend

vscode buildNext.instructions.md

Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).

microsoft/vscode · 9,715 tokens

webdev101: Instructions file for GitHub Copilot