Borrowing it
Nothing to install: this file belongs to just-every/mcp-screenshot-website-fast. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/just-every/mcp-screenshot-website-fast/main/CLAUDE.mdgit clone --depth 1 https://github.com/just-every/mcp-screenshot-website-fastWrote 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.
[](https://agentmods.dev/instructions/just-every/mcp-screenshot-website-fast/claude-md)<a href="https://agentmods.dev/instructions/just-every/mcp-screenshot-website-fast/claude-md"><img src="https://agentmods.dev/badge/instructions/just-every/mcp-screenshot-website-fast/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.
<a href="https://agentmods.dev/instructions/just-every/mcp-screenshot-website-fast/claude-md"><img src="https://agentmods.dev/badge/instructions/just-every/mcp-screenshot-website-fast/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 |
Grade A, and why
mcp-screenshot-website-fast 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- mcp-server-website CLAUDE.md — 100% identical, 0 lines differ
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 logicsrc/utils/: Logger and chunking utilitiessrc/index.ts: CLI interface using Commandersrc/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
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
mcp-screenshot-website-fast CLAUDE.md is an instructions file published in the GitHub repository just-every/mcp-screenshot-website-fast (108 stars, last pushed 6d 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. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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