Anthropic
@anthropicsOrganizationOn the leaderboard
| Rank | Repository | Stars |
|---|---|---|
| 75 | anthropics/skills | 110,521 |
| 80 | anthropics/claude-code | 108,811 |
| 671 | anthropics/claude-cookbooks | 37,381 |
| 788 | anthropics/prompt-eng-interactive-tutorial | 34,418 |
Top repositories by stars
- Python71,297
- anthropics/claude-code(on leaderboard)
Claude Code is an agentic coding tool that lives in your terminal, understands your codebase, and helps you code faster by executing routine tasks, explaining complex code, and handling git workflows - all through natural language commands.
Shell67,517 - anthropics/claude-cookbooks(on leaderboard)
A collection of notebooks/recipes showcasing some fun and effective ways of using Claude.
Jupyter Notebook33,021 - anthropics/prompt-eng-interactive-tutorial(on leaderboard)
Anthropic's Interactive Prompt Engineering Tutorial
Jupyter Notebook30,223 - anthropics/courses
Anthropic's educational courses
Jupyter Notebook18,646 - anthropics/claude-quickstarts
A collection of projects designed to help developers quickly get started with building deployable applications using the Claude API
Python14,628 - anthropics/claude-plugins-official
Official, Anthropic-managed directory of high quality Claude Code Plugins.
Shell7,587 - anthropics/knowledge-work-plugins
Open source repository of plugins primarily intended for knowledge workers to use in Claude Cowork
Python7,509 - TypeScript5,717
- Python4,849
- anthropics/original_performance_takehome
Anthropic's original performance take-home, now open for you to try!
Python3,473 - anthropics/claude-code-security-review
An AI-powered security review GitHub Action using Claude to analyze code changes for security vulnerabilities.
Python2,998 - Python2,780
- anthropics/claudes-c-compiler
Claude Opus 4.6 wrote a dependency-free C compiler in Rust, with backends targeting x86 (64- and 32-bit), ARM, and RISC-V, capable of compiling a booting Linux kernel.
Rust2,197 - anthropics/hh-rlhf
Human preference data for "Training a Helpful and Harmless Assistant with Reinforcement Learning from Human Feedback"
1,816 - anthropics/anthropic-sdk-typescript
Access to Anthropic's safety-first language model APIs in TypeScript
TypeScript1,625 - anthropics/claude-agent-sdk-demos
Claude Code SDK Demos
TypeScript1,455 - anthropics/anthropic-sdk-go
Access to Anthropic's safety-first language model APIs via Go
Go798 - anthropics/claude-code-base-action
This repo is a mirror of the contents of base-action in https://github.com/anthropics/claude-code-action.
TypeScript577 - Python346
- Kotlin227
- anthropics/devcontainer-features
Anthropic Dev Container Features, including Claude Code CLI
Shell213 - anthropics/life-sciences
Repo for the Claude Code Marketplace to use with the Claude for Life Sciences Launch. This will continue to host the marketplace.json long-term, but not the actual MCP servers.
Python212 - anthropics/PySvelte
A library for bridging Python and HTML/Javascript (via Svelte) for creating interactive visualizations
Python204 - anthropics/anthropic-retrieval-demo
Lightweight demo using the Anthropic Python SDK to experiment with Claude's Search and Retrieval capabilities over a variety of knowledge bases (Elasticsearch, vector databases, web search, and Wikipedia).
Python178 - anthropics/anthropic-sdk-csharp
Access to Anthropic's safety-first language model APIs in C#
C#152 - anthropics/toy-models-of-superposition
Notebooks accompanying Anthropic's "Toy Models of Superposition" paper
Jupyter Notebook136 - anthropics/sleeper-agents-paper
Contains random samples referenced in the paper "Sleeper Agents: Training Robustly Deceptive LLMs that Persist Through Safety Training".
129 - anthropics/political-neutrality-eval
This repo contains detailed implementation information about Anthropic's paired prompts approach for evaluating political neutrality.
Python113 - Python97
- anthropics/anthropic-sdk-php
Access to Anthropic's safety-first language model APIs in PHP
PHP92 - anthropics/attribution-graphs-frontend
https://transformer-circuits.pub/2025/attribution-graphs/methods.html
JavaScript91 - TypeScript90
- anthropics/github-mcp-server
GitHub's official MCP Server
Go71 - anthropics/orjson
Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy
Python37 - anthropics/swift-markdown-ui
Display and customize Markdown text in SwiftUI
Swift34 - anthropics/claude-constitution
The foundational document describing Claude's values and behavior
26 - anthropics/triton
Development repository for the Triton language and compiler
C++19 - anthropics/rclone
"rsync for cloud storage" - Google Drive, S3, Dropbox, Backblaze B2, One Drive, Swift, Hubic, Wasabi, Google Cloud Storage, Azure Blob, Azure Files, Yandex Files
Go17 - Go17
- Python13
- anthropics/hypercorn
Hypercorn is an ASGI and WSGI Server based on Hyper libraries and inspired by Gunicorn.
Python12 - anthropics/model-cards
Supplementary materials for Claude Model Cards
11 - Python11
- Python9
- anthropics/python-tblib
Serialization library for Exceptions and Tracebacks.
Python8 - anthropics/beam
Apache Beam is a unified programming model for Batch and Streaming data processing.
Java7 - anthropics/tailscale-hint-extension
Chrome extension showing helpful troubleshooting when Tailscale .local domains fail to resolve
HTML6 - anthropics/torchtyping
Type annotations and dynamic checking for a tensor's shape, dtype, names, etc.
Python6 - Python6
- anthropics/cfaulthandler
Like Python's faulthandler module, but also prints the C call stack
C6 - Python6
- anthropics/httpcore
A minimal HTTP client. ⚙️
Python4 - anthropics/maestro
Maestro: Netflix’s Workflow Orchestrator
Java2 - anthropics/nix-eval-jobs
Parallel nix evaluator with a streamable json output [maintainers @Mic92, @adisbladis]
C++1 - anthropics/argo-cd
Declarative Continuous Deployment for Kubernetes
Go0