What is mcp-server-website CLAUDE.md?

Repository instructions for an add-on that captures web-page screenshots through a command-line tool or MCP server, a standard way for coding agents to call tools.

Use it when developing, building, testing, linting, or running the tool that captures fresh full-page or viewport screenshots.

It gives the coding agent the project layout, commands, and checks needed to work on the screenshot tool without guessing.

How chongzixuan-ai/mcp-server-website configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to chongzixuan-ai/mcp-server-website. 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/chongzixuan-ai/mcp-server-website/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/chongzixuan-ai/mcp-server-website

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/chongzixuan-ai/mcp-server-website/claude-md/github.svg)](https://agentmods.dev/instructions/chongzixuan-ai/mcp-server-website/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/chongzixuan-ai/mcp-server-website/claude-md"><img src="https://agentmods.dev/badge/instructions/chongzixuan-ai/mcp-server-website/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/chongzixuan-ai/mcp-server-website/claude-md"><img src="https://agentmods.dev/badge/instructions/chongzixuan-ai/mcp-server-website/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,059 This file is loaded in full into every session.

When invoked 1,059 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	$0.01059	$0.01059
Opus 5	$0.00530	$0.00530
Sonnet 5	$0.00212	$0.00212
Haiku 4.5	$0.00106	$0.00106

Measured 10d ago against content hash 179228f0af54, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

mcp-server-website CLAUDE.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 10d 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 mcp-screenshot-website-fast CLAUDE.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.

CLAUDE.md · 165 lines

How it starts

The opening of the file, as written. The whole thing — 165 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

Fast, efficient screenshot capture of web pages - optimized for CLI coding tools. Automatically tiles full pages into 1072x1072 chunks for optimal processing.

Core Modules & Files

src/internal/screenshotCapture.ts: Core Puppeteer-based capture logic
src/utils/: Logger and chunking utilities
src/index.ts: CLI interface using Commander
src/serve.ts: MCP server using SDK
No caching - always captures fresh content

Commands

Development

npm run dev capture <URL> -o out.png # Capture screenshot (tiled by default)
npm run dev capture <URL> --no-full-page -o out.png # Viewport only
npm run serve:dev                    # Run MCP server in dev mode

Build & Production

npm run build                        # Compile TypeScript to JavaScript
npm run start                        # Run compiled CLI
npm run serve                        # Run compiled MCP server

Code Quality

npm run lint                         # Run ESLint
npm run typecheck                    # TypeScript type checking
npm test                             # Run tests with Vitest

Architecture Overview

A TypeScript-based screenshot tool optimized for AI vision models, particularly Claude Vision API. Captures high-quality screenshots with intelligent tiling for large pages.

Core Components

Screenshot Engine (src/internal/screenshotCapture.ts)
- Puppeteer-based headless Chrome automation
- Automatic viewport limiting (1072x1072 for Claude Vision)
- Smart page tiling for full-page captures
- Configurable wait strategies
CLI Interface (src/index.ts)
- Commander-based command line tool
- Support for various output formats
- Flexible viewport and wait options
MCP Server (src/serve.ts)
- SDK-based MCP implementation
- Real-time screenshot capture
- No caching for always-fresh content

Read the full file on GitHub · 165 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.

10d ago First seen · 165 lines · 1,059 tokens per session scan A 179228f0af54

Subscribe to this mod's changes

mcp-server-website CLAUDE.md is an instructions file published in the GitHub repository chongzixuan-ai/mcp-server-website (26 stars, last pushed 10mo ago), licensed MIT. It adds 1,059 tokens to every session, about $0.0053 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to mcp-screenshot-website-fast CLAUDE.md, differing in 0 lines, and is treated as a copy.

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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).

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mcp-server-website: Instructions file for Claude Code