Open Source
Tools That Actually Help
Curated open source projects for people who want to get more out of Claude. All battle-tested, all real GitHub repos — no fluff.
Superpowers for Claude Code
A complete software development methodology for coding agents. Provides 20+ battle-tested skills — TDD, debugging, brainstorming, planning — that make Claude Code reliably ship production-quality work without hand-holding.
Use cases
- Test-driven development that actually works
- Systematic multi-step debugging
- Task planning + autonomous execution
- Brainstorming before writing any code
Claude Code slash command
/plugin install superpowersRTK — Rust Token Killer
A single Rust binary that sits between Claude Code and your shell, filtering and compressing command output before it hits your context window. Zero config — a PreToolUse hook rewrites commands transparently.
Use cases
- 60–90% fewer tokens on git, cargo, tsc, pytest runs
- Dramatically lower API costs on long sessions
- Keeps context window clean for the actual problem
- Works with Claude Code, Cursor, Copilot, Windsurf
Install script (Bash)
curl -fsSL https://raw.githubusercontent.com/rtk-ai/rtk/master/install.sh | shMCP Servers (Model Context Protocol)
Official reference implementations for MCP — the open protocol that lets Claude securely access external tools and data. Includes ready-to-use servers for filesystem, Git, memory, web fetch, and more.
Use cases
- Give Claude persistent memory across sessions
- Let Claude read/write your local files safely
- Connect Claude to any database or REST API
- Build your own custom tool servers
Run memory server (npx)
npx -y @modelcontextprotocol/server-memoryClaude Code Action
Official Anthropic GitHub Action that wires Claude directly into your PR workflow. Mention @claude in any PR or issue comment to get code reviews, fix suggestions, or full implementations — all triggered from GitHub.
Use cases
- Automated code review on every PR
- Ask Claude to implement a fix directly in the PR
- Answer architecture questions from issue threads
- Works with Anthropic API, AWS Bedrock, or Google Vertex
GitHub Actions workflow
uses: anthropics/claude-code-action@v1Anthropic Cookbook
Official collection of Jupyter notebooks and copy-paste code recipes for the Claude API. Covers every major pattern from RAG and vision to prompt caching, tool use, structured outputs, and evaluations.
Use cases
- Learn the Claude API from working examples
- RAG with Pinecone, Chroma, or any vector store
- Multimodal: images, PDFs, documents
- Build evals and measure prompt quality
Clone & run locally
git clone https://github.com/anthropics/anthropic-cookbookSuperpowers Chrome
Claude Code plugin for direct Chrome browser control via the DevTools Protocol. No Selenium, no Playwright — Claude talks to your browser natively, making web automation and testing genuinely usable.
Use cases
- UI testing driven by Claude in plain English
- Scraping and data extraction workflows
- Automate repetitive browser tasks via prompts
- Works with the Superpowers skills framework
Claude Code slash command
/plugin install superpowers-chromeTrending on GitHub
Updated dailyProjects gaining momentum in the Claude & MCP ecosystem.
OmniRoute
Never stop coding. Free MIT AI gateway: one endpoint, 352 providers (150+ free), 1200+ models Kimi, Claude, GPT, Gemini, GLM, DeepSeek, MiniMax. Works with Claude Code, Codex, Cursor, OpenCode, Cline & Copilot. Quota-aware auto-fallback, RTK+Caveman compression saves 15-95% tokens, MCP/A2A, Desktop/PWA. Built by 550+ contributors
agentic-awesome-skills
AAS Core is the local, agent-first control plane for complete catalog discovery, agent-owned selection, stack validation, and planning, backed by 2,005+ agentic skills. Includes CLI, local MCP, catalog, plugins, and Workbench.
sim
Sim is the collaborative workspace to build, deploy, and monitor AI agents and workflows. Used by 100,000+ builders.
oh-my-pi
⌥ Coding agent with the IDE wired in
ai
The AI Toolkit for TypeScript. From the creators of Next.js, the AI SDK is a free open-source library for building AI-powered applications and agents
opencodex
Universal provider proxy for OpenAI Codex & Claude Code — use any LLM (Claude, Gemini, Grok, DeepSeek, Ollama…) with Codex CLI, App, SDK, and Claude Code
mcp-use
The fullstack MCP framework to develop MCP Apps for ChatGPT / Claude & MCP Servers for AI Agents.
harness-sdk
Build an agent harness and control it end-to-end. Open-source SDK for production AI agents in Python & TypeScript - any model, any cloud.
archestra
Enterprise AI Platform with guardrails, MCP registry, gateway & orchestrator