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.
hermes-agent
The agent that grows with you
litellm
Python SDK, Proxy Server (AI Gateway) to call 100+ LLM APIs in OpenAI (or native) format, with cost tracking, guardrails, loadbalancing and logging. [Bedrock, Azure, OpenAI, VertexAI, Cohere, Anthropic, Sagemaker, HuggingFace, VLLM, NVIDIA NIM]
activepieces
AI Agents & MCPs & AI Workflow Automation • (~400 MCP servers for AI agents) • AI Automation / AI Agent with MCPs • AI Workflows & AI Agents • MCPs for AI Agents
oh-my-pi
⌥ AI Coding agent for the terminal — hash-anchored edits, optimized tool harness, LSP, Python, browser, subagents, and more
orca
Orca is the next-gen ADE for working with a fleet of parallel agents. Run any coding agent with your own subscription. Available on desktop and mobile.
buildwithclaude
A single hub to find Claude Skills, Agents, Commands, Hooks, Plugins, and Marketplace collections to extend Claude Code, Claude Desktop, Agent SDK and OpenClaw
inspector
Testing and evaluation platform to chat, inspect, and debug MCP servers, MCP apps, and ChatGPT apps.
claude-tap
Intercept and inspect Coding Agent API traffic from Claude Code, Codex CLI, Gemini CLI, Cursor CLI, OpenCode, Kimi, Pi, and Hermes in a local trace viewer.
voicemode
Natural voice conversations with Claude Code