Public GitHub footprint of Anthropic

Public repository for Agent Skills

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.

A collection of notebooks/recipes showcasing some fun and effective ways of using Claude.

Anthropic's Interactive Prompt Engineering Tutorial

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Official, Anthropic-managed directory of high quality Claude Code Plugins.

Anthropic's educational courses

Open source repository of plugins primarily intended for knowledge workers to use in Claude Cowork

A collection of projects designed to help developers quickly get started with building deployable applications using the Claude API

A suite of plugins for legal workflows

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Skills for threat modeling, scanning, triage, patching, plus an autonomous scanning harness you can /customize

An AI-powered security review GitHub Action using Claude to analyze code changes for security vulnerabilities.

Anthropic's original performance take-home, now open for you to try!

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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.

Claude Code SDK Demos

Reference and an example for the Bluetooth API for makers in Claude Cowork & Claude Code Desktop

Access to Anthropic's safety-first language model APIs in TypeScript

Human preference data for "Training a Helpful and Harmless Assistant with Reinforcement Learning from Human Feedback"

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Access to Anthropic's safety-first language model APIs via Go

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This repo is a mirror of the contents of base-action in https://github.com/anthropics/claude-code-action.

Rust implementation of protobuf with editions support, JSON serialization, and zero-copy views

The CLI for the Claude API

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.

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An implementation of the ConnectRPC protocol for Rust

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Report issues related to MCP integration with Claude here.

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Access to Anthropic's safety-first language model APIs in C#

Anthropic Dev Container Features, including Claude Code CLI

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A library for bridging Python and HTML/Javascript (via Svelte) for creating interactive visualizations

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).

Community plugin marketplace for Claude Cowork and Claude Code. Read-only mirror — submit plugins at clau.de/plugin-directory-submission.

HTML effectiveness examples

Access to Anthropic's safety-first language model APIs in PHP

Notebooks accompanying Anthropic's "Toy Models of Superposition" paper

Contains random samples referenced in the paper "Sleeper Agents: Training Robustly Deceptive LLMs that Persist Through Safety Training".

This repo contains detailed implementation information about Anthropic's paired prompts approach for evaluating political neutrality.

GitHub's official MCP Server

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https://transformer-circuits.pub/2025/attribution-graphs/methods.html

The foundational document describing Claude's values and behavior

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Claude support for Apple Foundation Models

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Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy

Display and customize Markdown text in SwiftUI

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"rsync for cloud storage" - Google Drive, S3, Dropbox, Backblaze B2, One Drive, Swift, Hubic, Wasabi, Google Cloud Storage, Azure Blob, Azure Files, Yandex Files

Head Vis Public Release

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A Nix plugin that resolves Cargo workspaces natively and allows for crate level builds

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Development repository for the Triton language and compiler

Supplementary materials for Claude Model Cards

Benchmark for evaluating LLM agents on smart-contract vulnerability discovery and exploitation

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Homebrew formulae for Anthropic tools.

Chrome extension showing helpful troubleshooting when Tailscale .local domains fail to resolve

A runtime for writing reliable asynchronous applications with Rust. Provides I/O, networking, scheduling, timers, ...

Hypercorn is an ASGI and WSGI Server based on Hyper libraries and inspired by Gunicorn.

Maestro: Netflix’s Workflow Orchestrator

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A minimal HTTP client. ⚙️

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Declarative Continuous Deployment for Kubernetes

Apache Beam is a unified programming model for Batch and Streaming data processing.

Terragrunt is a flexible orchestration tool that allows Infrastructure as Code written in OpenTofu/Terraform to scale.

Serialization library for Exceptions and Tracebacks.

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Like Python's faulthandler module, but also prints the C call stack

Type annotations and dynamic checking for a tensor's shape, dtype, names, etc.

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Parallel nix evaluator with a streamable json output [maintainers @Mic92, @adisbladis]

A Swift package for parsing, building, editing, and analyzing Markdown documents.

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Chartistry is an extensible charting library for Leptos