Cult of Claude
The curated map of the Claude universe
Everything worth knowing about Claude, MCP, tools, prompts, and workflows — curated daily.
Not a directory of 10,000 servers. Not AI slop. A curated, opinionated, continuously-updated knowledge graph of the Claude ecosystem with original editorial judgment.
5.5k+
MCP Servers
3.7k+
Tools
1.4k+
Projects
295
Prompts
278
Videos
Explore the Claude Universe
MCP Servers
MCP servers reviewed with editorial judgment. Searchable directory with ratings and categories.
Tools & Extensions
CLIs, plugins, libraries, frameworks, and agent tools for Claude.
Prompt Library
System prompts, templates, and prompt chains rated by quality.
Built with Claude
Open source projects, apps, and tools built with Claude.
Top Rated MCP Servers
Filesystem MCP Server
Read/write local files with configurable access controls -- dead simple and essential.
Secure file operations with configurable access controls. The official reference implementation for local file access.
Fetch MCP Server
HTTP requests from Claude -- basic but essential for any workflow that touches the web.
Web content fetching and conversion for efficient LLM usage. Supports GET/POST with automatic HTML-to-markdown conversion.
Google Drive MCP Server
Access Google Drive files from Claude -- useful for document-heavy workflows.
File access and search for Google Drive. Read docs, sheets, and slides with automatic format conversion.
Memory MCP Server
Give Claude persistent memory across sessions -- the knowledge graph approach works surprisingly well.
Knowledge graph-based persistent memory system. Stores entities, relationships, and observations in a local JSON file.
PostgreSQL MCP Server
Query Postgres databases directly from Claude -- read-only by default, which is the right call.
Read-only database access with schema inspection for PostgreSQL databases. Part of the archived reference servers.
Puppeteer MCP Server
Headless browser automation via Puppeteer -- reliable but being superseded by Playwright.
Browser automation and web scraping using Puppeteer. Navigate pages, take screenshots, extract data.
Built with Claude
langchain
Elixir implementation of a LangChain style framework that lets Elixir projects integrate with and leverage LLMs.
everything-claude-code
The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.
OpenHands
🙌 OpenHands: AI-Driven Development
awesome-claude-skills
🎯 The definitive collection of 50+ verified Awesome Claude Skills for Claude Code, Claude.ai, and API. Boost productivity with TDD, debugging, git workflows, document processing, and more. Community-driven, actively maintained.
Popular Videos
5:49 Claude 3.7 goes hard for programmers…
Fireship
33:44 You've Been Using AI the Hard Way (Use This Instead)
NetworkChuck
38:40 you need to learn MCP RIGHT NOW!! (Model Context Protocol)
NetworkChuck
8:08 Claude's Model Context Protocol is here... Let's test it
Fireship
Popular Prompts
Agent Prompt Plan Mode Enhanced
<!-- name: 'Agent Prompt: Plan mode (enhanced)' description: Enhanced prompt for the Plan subagent c
Agent Prompt Quick Pr Creation
<!-- name: 'Agent Prompt: Quick PR creation' description: Streamlined prompt for creating a commit a
Skill Loop Slash Command
<!-- name: 'Skill: /loop slash command' description: Parses user input into an interval and prompt,
Agent Prompt Conversation Summarization
<!-- name: 'Agent Prompt: Conversation summarization' description: System prompt for creating detail
Best CLAUDE.md Examples
Vercel AI SDK
The gold standard for production CLAUDE.md files.
~300 lines of meticulous detail. The gold standard for CLAUDE.md in TypeScript monorepos.
Pydantic AI
Personality as convention.
Philosophical approach: "Channel your inner Samuel Colvin." Personality-driven conventions that stick.
Dan Abramov's overreacted.io
Voice preservation masterclass.
Preserves Dan's distinctive writing voice. The definitive example of voice-preservation CLAUDE.md.
HumanLayer
Maximum signal, minimum noise.
Benchmark for conciseness at ~60 lines. Every line carries weight.
Featured Guides
How to Write a CLAUDE.md That Actually Works
Based on patterns from 30 real production files. What the best files share, common mistakes, and templates by project type.
The 15 MCP Servers That Actually Matter
Out of 10,000+ MCP servers, these 15 are the ones worth installing. Opinionated, tested, ranked by real-world utility.
Prompting Claude Is Different: A Guide for ChatGPT Switchers
Claude is not ChatGPT with a different name. Different strengths, different failure modes, different prompting patterns.
Our Methodology
Every tool is tested, every recommendation is editorial. We verify install commands, check GitHub activity, assess documentation quality, and form an honest opinion. No paid placements. No affiliate links. Just useful curation.
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