Borrowing it
Nothing to install: this file belongs to LLMBaseAI/mcp-servers. 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/LLMBaseAI/mcp-servers/main/CLAUDE.mdgit clone --depth 1 https://github.com/LLMBaseAI/mcp-serversWrote 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/llmbaseai/mcp-servers/claude-md)<a href="https://agentmods.dev/instructions/llmbaseai/mcp-servers/claude-md"><img src="https://agentmods.dev/badge/instructions/llmbaseai/mcp-servers/claude-md.svg" alt="Measured on agentmods" 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 | $0.03146 | $0.03146 |
| Opus 5 | $0.01573 | $0.01573 |
| Sonnet 5 | $0.00629 | $0.00629 |
| Haiku 4.5 | $0.00315 | $0.00315 |
Grade A, and why
mcp-servers CLAUDE.md scanned grade A 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 7d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl https://mcp.llmbase.ai/ How it starts
The opening of the file, as written. The whole thing — 394 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Claude Code Development Context
Project Overview
This is a MCP (Model Context Protocol) Servers by LLM Base project built with Hono.js, designed to host multiple MCP servers on Cloudflare Workers. The project currently implements a Web Fetcher MCP Server that allows Claude and other MCP clients to fetch websites as raw text, markdown, or plain text.
Key Information for Development
Host Configuration
- Production URL:
https://mcp.llmbase.ai - Custom Domain: Configured in
wrangler.jsonc - Workers Deployment: Uses Cloudflare Workers with custom domain routing
Project Structure
src/
├── index.ts # Main entry point and Worker handler
├── router.ts # Hono.js routing with all endpoints
├── types.ts # TypeScript type definitions
├── servers/ # MCP server implementations
│ └── web-fetcher-server.ts # Web fetching MCP server
├── services/ # Business logic services
│ ├── web-fetcher.ts # Core web fetching service
│ └── sse-service.ts # Server-Sent Events handling
└── utils/ # Utility functions
└── html-processor.ts # HTML to text/markdown conversion
Current MCP Servers
Web Fetcher Server
- Endpoint:
/mcp/web-fetcher - SSE Endpoint:
/sse/web-fetcher - API Prefix:
/api/ - Stream Prefix:
/stream/web-fetcher/
Available Tools:
fetchWebsite(url, format?, followRedirects?, timeout?, userAgent?, headers?)- Fetch single websitefetchMultipleWebsites(urls, format?, maxConcurrent?, followRedirects?, timeout?)- Fetch multiple websitesextractWebsiteMetadata(url)- Extract metadata from websitecheckWebsiteStatus(url)- Check if website is accessible
Technology Stack
Core Framework
- Hono.js: Fast web framework for Cloudflare Workers
- TypeScript: Full type safety with strict configuration
- Cloudflare Workers: Serverless platform with global edge distribution
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.
- 7d ago First seen · 394 lines · 3,146 tokens per session scan A 8b3312306cda
mcp-servers CLAUDE.md is an instructions file published in the GitHub repository LLMBaseAI/mcp-servers (0 stars, last pushed 1y ago), licensed MIT. It adds 3,146 tokens to every session, about $0.0157 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-01.
Other instructions, from other repositories
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
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).
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.