Repositories list

• sandbox-runtime

  Public

  anthropics/sandbox-runtime’s past year of commit activity
  A lightweight sandboxing tool for enforcing filesystem and network restrictions on arbitrary processes at the OS level, without requiring a container.

  TypeScript

  •

  Apache License 2.0

  •427427 forks•5.2k5.2k stars•8989 issues•9797 pull requests•Updated Sep 7, 2026Sep 7, 2026

• claude-plugins-official

  Public

  anthropics/claude-plugins-official’s past year of commit activity
  Official, Anthropic-managed directory of high quality Claude Code Plugins.

  skillsmcpclaude-code

  skillsmcpclaude-code

  Python

  •

  Apache License 2.0

  •4k4k forks•36k36k stars•962962 issues•8989 pull requests•Updated Sep 7, 2026Sep 7, 2026

• buffa

  Public

  anthropics/buffa’s past year of commit activity
  Rust implementation of protobuf with editions support, JSON serialization, and zero-copy views

  Rust

  •

  Apache License 2.0

  •8686 forks•878878 stars•1414 issues•1616 pull requests•Updated Sep 6, 2026Sep 6, 2026

• claude-code-action

  Public

  anthropics/claude-code-action’s past year of commit activity
  TypeScript

  •

  MIT License

  •2.1k2.1k forks•8.8k8.8k stars•456456 issues•320320 pull requests•Updated Sep 6, 2026Sep 6, 2026

• claude-code-base-action

  Public

  anthropics/claude-code-base-action’s past year of commit activity
  This repo is a mirror of the contents of base-action in https://github.com/anthropics/claude-code-action.

  TypeScript

  •

  MIT License

  •611611 forks•971971 stars•77 issues•77 pull requests•Updated Sep 6, 2026Sep 6, 2026

• claude-agent-sdk-python

  Public

  anthropics/claude-agent-sdk-python’s past year of commit activity
  Python

  •

  MIT License

  •1.3k1.3k forks•8.1k8.1k stars•190190 issues•261261 pull requests•Updated Sep 6, 2026Sep 6, 2026

• claude-agent-sdk-typescript

  Public

  anthropics/claude-agent-sdk-typescript’s past year of commit activity
  Shell

  •223223 forks•1.7k1.7k stars•197197 issues•1010 pull requests•Updated Sep 6, 2026Sep 6, 2026

• claude-code

  Public

  anthropics/claude-code’s past year of commit activity
  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 c…

  Python

  •23k23k forks•144k144k stars•12k12k issues•704704 pull requests•Updated Sep 6, 2026Sep 6, 2026

• formal-math

  Public

  anthropics/formal-math’s past year of commit activity
  Lean

  •

  Apache License 2.0

  •4040 forks•231231 stars•99 issues•22 pull requests•Updated Sep 5, 2026Sep 5, 2026

• knowledge-work-plugins

  Public

  anthropics/knowledge-work-plugins’s past year of commit activity
  Open source repository of plugins primarily intended for knowledge workers to use in Claude Cowork

  Python

  •

  Apache License 2.0

  •2.9k2.9k forks•24k24k stars•6666 issues•2525 pull requests•Updated Sep 5, 2026Sep 5, 2026

• rayon

  Public

  anthropics/rayon’s past year of commit activity
  Rayon: A data parallelism library for Rust

  Rust

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  Apache License 2.0

  •604604 forks•11 star•00 issues•00 pull requests•Updated Sep 5, 2026Sep 5, 2026

• homebrew-tap

  Public
  Homebrew formulae for Anthropic tools.

  Ruby

  •66 forks•2727 stars•00 issues•11 pull request•Updated Sep 4, 2026Sep 4, 2026

• anthropic-cli

  Public
  The CLI for the Claude API

  apicliclaude+ 1

  apicliclaudeanthropic

  Go

  •

  MIT License

  •104104 forks•633633 stars•00 issues•1515 pull requests•Updated Sep 4, 2026Sep 4, 2026

• anthropic-sdk-php

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

  PHP

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  MIT License

  •5252 forks•177177 stars•22 issues•33 pull requests•Updated Sep 4, 2026Sep 4, 2026

• anthropic-sdk-java

  Public
  Kotlin

  •

  MIT License

  •101101 forks•366366 stars•22 issues•22 pull requests•Updated Sep 4, 2026Sep 4, 2026

• anthropic-sdk-typescript

  Public

  anthropics/anthropic-sdk-typescript’s past year of commit activity
  Access to Anthropic's safety-first language model APIs in TypeScript

  TypeScript

  •

  MIT License

  •395395 forks•2.1k2.1k stars•1818 issues•3636 pull requests•Updated Sep 4, 2026Sep 4, 2026

• anthropic-sdk-ruby

  Public
  Ruby

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  MIT License

  •7272 forks•366366 stars•22 issues•22 pull requests•Updated Sep 4, 2026Sep 4, 2026

• anthropic-sdk-csharp

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

  C#

  •

  MIT License

  •103103 forks•321321 stars•77 issues•44 pull requests•Updated Sep 4, 2026Sep 4, 2026

• anthropic-sdk-python

  Public

  anthropics/anthropic-sdk-python’s past year of commit activity
  Python

  •

  MIT License

  •845845 forks•3.9k3.9k stars•4646 issues•121121 pull requests•Updated Sep 4, 2026Sep 4, 2026

• anthropic-sdk-go

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

  Go

  •

  MIT License

  •211211 forks•1.2k1.2k stars•1717 issues•2626 pull requests•Updated Sep 4, 2026Sep 4, 2026

• claude-tag-wif-gateway-sample

  Public

  anthropics/claude-tag-wif-gateway-sample’s past year of commit activity
  Sample customer-side gateway for Claude Tag identity federation. Sample code; not maintained.

  Python

  •

  Apache License 2.0

  •11 fork•00 stars•00 issues•00 pull requests•Updated Sep 4, 2026Sep 4, 2026

• fermats-last-theorem

  Public
  Lean

  •

  Apache License 2.0

  •7878 forks•932932 stars•33 issues•00 pull requests•Updated Sep 4, 2026Sep 4, 2026

• claude-quickstarts

  Public

  anthropics/claude-quickstarts’s past year of commit activity
  A collection of projects designed to help developers quickly get started with building deployable applications using the Claude API

  TypeScript

  •

  MIT License

  •3k3k forks•18k18k stars•114114 issues•8585 pull requests•Updated Sep 4, 2026Sep 4, 2026

• claude-cookbooks

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

  Jupyter Notebook

  •

  MIT License

  •6.3k6.3k forks•53k53k stars•8080 issues•243243 pull requests•Updated Sep 3, 2026Sep 3, 2026

• claude-tag-plugins

  Public
  Shell

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  Apache License 2.0

  •1616 forks•4747 stars•11 issue•33 pull requests•Updated Sep 3, 2026Sep 3, 2026

• skills

  Public
  Public repository for Agent Skills

  agent-skills

  agent-skills

  Python

  •21k21k forks•175k175k stars•349349 issues•870870 pull requests•Updated Sep 3, 2026Sep 3, 2026

• jacobian-lens

  Public
  Companion code for the global workspace interpretability paper

  Python

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  Apache License 2.0

  •276276 forks•1.9k1.9k stars•55 issues•77 pull requests•Updated Sep 2, 2026Sep 2, 2026

• k12-teacher-skills

  Public
  Skills and eval rubrics for K-12 teachers, co-developed with Learning Commons

  Python

  •

  Apache License 2.0

  •8686 forks•486486 stars•33 issues•44 pull requests•Updated Sep 1, 2026Sep 1, 2026

• commerce-agents

  Public

  anthropics/commerce-agents’s past year of commit activity
  Reference blueprint for building shopping and merchant agents with Claude. Examples in retail, commerce, telecom, and entertainment included.

  Python

  •

  Apache License 2.0

  •414414 forks•2.4k2.4k stars•00 issues•66 pull requests•Updated Sep 1, 2026Sep 1, 2026

• courses

  Public

  anthropics/courses’s past year of commit activity
  Anthropic's educational courses

  Jupyter Notebook

  •

  Other

  •2.5k2.5k forks•23k23k stars•4343 issues•5353 pull requests•Updated Aug 28, 2026Aug 28, 2026