Open-Source Directory — Claude / Anthropic

Claude
Tools

A curated index of extensions, plugins, MCP servers, hooks, and integrations for Claude — discovered from GitHub and refreshed daily.

Repository Growth — Last 30 Days

8239entries
★ starsA–Z name

harness-doctor

7
@jubscodes

A Claude Code skill that audits your agent harness — contract, skills, guides/sensors, hooks, memory — and reports prioritized fixes.

updated Jun 2026

agent-connector

7
@ken-jo

Deploy one MCP to every agent CLI. Write your server + hooks once with defineConnector() → native config, plugin & marketplace across 42 agent CLIs (Claude Code, Codex, Cursor, Copilot, Gemini, OpenCode, Warp, Zed…). Built-in per-tool token telemetry. Apache-2.0.

updated Jul 2026

cross-agent-memory-kit

7
@internetyev

Persistent, self-updating memory for AI coding agents (Claude Code, Codex, Cursor, Gemini, Kiro, Hermes). Built on mcp-memory-service: a post-session distillation hook, a retrieval skill, optional Cloudflare multi-device sync, multi-user mode (private + shared memory on one shared account), and an interactive install wizard.

updated Jul 2026

skillcheck

7
@sx4im

🧪 A/B test your agent skills — skillcheck measures whether a SKILL.md actually improves an LLM's task performance, with blind grading, bootstrap confidence intervals, and a 0–100 score. CLI for Claude Code, Codex & Cursor skills.

updated Jul 2026

Upkeep

7
@wei18

Upkeep — an AI audit crew for your repo. Catches docs/spec/asset drift with evidence; output-only. Claude Code plugin/skill + reusable CI workflow.

updated Jul 2026

ableton-producer-skills

7
@Korben00

Claude Code skills toolkit to help music producers compose, arrange, reharmonize, groove, sound-design & sample in Ableton Live via the Extension SDK.

updated Jul 2026

ClaudeUsageBar

7
@Rohilalala

See your Claude AI usage limits (5-hour + weekly) live in the macOS menu bar. Native Swift app + browser extension. Color warnings, notifications, 100% local.

updated Jul 2026

youtube-advisor

7
@AlexanderAbramovPav

Build an AI advisor SKILL from any YouTube channel — transcripts, BM25 + semantic RAG, verbatim quotes with timestamps.

updated Jul 2026

study.skill

7
@SugarMGP

学习.skill —— 让 Agent 成为你的赛博老师,帮你备课,陪你学习

updated Jun 2026

linkedin-mcp

7
@devag7

LinkedIn for AI assistants (MCP) — profiles, people/job/company search, feed & messaging as structured JSON, plus gated writes (connect/message/post/react/comment) via LinkedIn's API instead of DOM-clicking. Stealth-browser engine, 22 tools, built-in safety layer. Claude · Cursor · any MCP client.

updated Jul 2026

obsidian-ai-vault-kit

7
@eliColussi

Turn any folder into a self-documenting Obsidian vault. Claude Code hooks auto-capture every prompt, every answer, and every file edit into your Daily note. One-command install.

updated Jun 2026

flatten-mcp

7
@shayaShav

Cut a Claude Code session's context tokens losslessly: bulky tool output moves to a local backup, every prompt stays verbatim, and the session resumes lighter — the reversible alternative to /compact.

updated Jul 2026

linkedin-post-max

7
@noah-vl

Write LinkedIn posts that sound like you, not a chatbot. It learns from posts you've already published, turns a rough idea into a few ready-to-post drafts, and helps you find things worth writing about.

updated Jul 2026

openfusion

7
@michaljerzylew

A council of rival frontier-model CLIs (GPT-5.5, Gemini 3.1 Pro, Grok 4.3, Claude) plans your task claim-by-claim — self-votes excluded, every claim verified — then builds it. A Claude Code skill.

updated Jul 2026

cnipa-patent-writer

7
@fnjialun

中国发明专利(CNIPA)撰写 Claude Code 技能:只借模板版式、内容据你的材料自生成;npx 一键安装

updated Jul 2026

Borderline

7
@BansheeTech

Claude Code plugin that delegates boring, low-risk tasks (bulk i18n, trivial style tweaks) to the Gemini CLI — a transparent Claude ⇄ Gemini pipeline.

updated Jun 2026

personal-voice-capture

7
@eranshir

A Claude Code meta-skill that learns your writing voice from your own samples and edits, then compiles it into a reusable voice skill.

updated Jul 2026

SOTA-skills

7
@martinholovsky

State-of-the-Art (2026) AI/LLM engineering skills/agents for building and auditing software — 40+ domain & language skills, BUILD/AUDIT modes, audit checklists.

updated Jul 2026

math-modeling-single

7
@Yoki-cmd

数学建模论文生成器 (Claude Code Skill):给一道竞赛题,按国赛标准四阶段流程(策略→求解→写作→审查)端到端生成可编译的 LaTeX 论文。LaTeX-only 分支,xelatex 编译,MATLAB MCP/Python 跑真实数据,自带国赛标准模板。

updated Jun 2026

pentest-guards-skills

7
@aalhea

Skill + Hook 双层约束系统,让 Claude Code / AI Agent 在渗透测试场景下既能放手测试,又不会脱库、删库、留后门claudecode skills pentest-guards-skills

updated Jun 2026

biblemate-agentic-workspace

7
@eliranwong

BibleMate AI + UniqueBible Data (running on Google Antigravity / Claude Code / Grok Build) - An integrated local workspace combining robust scripture databases, modular study skills, and specialized AI personas to streamline biblical research and writing on the Google Antigravity platform.

updated Jul 2026

video-notes

7
@iamvista

Claude Code skill: YouTube URL or local video → key-points note + timestamped transcript. Zero pip deps, original-language subtitle de-dup, Whisper fallback.

updated Jul 2026

skill-compass

7
@by-sonic

🧭 Claude Code hook that routes you to the right skills/agents — from your project's stack, keywords in your prompt, and what the AI finds mid-turn (UserPromptSubmit + PostToolUse). Zero deps, one Node file.

updated Jun 2026

ecologits-vscode

7
@marmelab

VSCode extension to monitor co2, electricity, and water used by claude code sessions

updated Jul 2026
← PREV01...211212213214215...344NEXT →