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

8236entries
★ starsA–Z name

agent-skills

2
@Solonnikov

Public collection of agent skills — reusable capabilities, prompts, and workflows for Claude Code and other agentic coding tools.

updated Apr 2026

ClaudeVerse

2
@IwuchukwuDivine

The Developer's Universe for Claude Code Mastery. An opinionated, open guide to workflows, extensions, token economics, and multi-agent orchestration with Claude Code.

updated Apr 2026

mac-chat-own-data-kit

2
@jinjingwangjessica-blip

Export your own chat archive from macOS IM apps. Pure-Python decryption + Chinese-optimized OCR + Claude Code skill

updated Jul 2026

crypto-claude-skills

2
@Vo1ganin

Claude Code & AI agent skills for on-chain crypto data APIs — Dune, Solscan Pro, Nansen, Solana RPC (Helius/QuickNode). Credit-aware, batch-optimized, cross-agent via AGENTS.md.

updated May 2026

clinical-trial-design

2
@wei-ai-lab

Claude Code plugin & MCP server for Phase 2/3 clinical trial design. 9 tools: single-primary (binary/continuous/PH+NPH survival), multi-hypothesis (co-primary, multi-population, Maurer-Bretz). Backed by gsDesign, gsDesign2, graphicalMCP. Word/PDF reporting, Monte-Carlo verification, 176-case benchmark corpus.

updated Jul 2026

axiom-reflex

2
@vdalhambra

Hooks, skills, agents, and MCPs that make Claude Code more autonomous and reflex-driven. Built for AI-first solo founders.

updated May 2026

hammer

2
@SebastianElvis

Agent skills for learning — Socratic tutoring with persistent learner state and spaced review. Ships the teach skill. Named after Richard Hamming.

updated May 2026

claude-enterprise-templates

2
@geekpartnerslab-kz

Opinionated templates for running Claude Code autonomously on enterprise projects: a CLAUDE.md constitution, a universal Technical Requirements template, and 7 Claude Code skills (architecture, product, code review, OWASP, QA, spec validation, UI/UX) with deterministic PASS/WARNING/BLOCKER checklists. With a filled-in fintech-api example.

updated Apr 2026

claude-config-audit

2
@MJWNA

Evidence-based audit + cleanup for Claude Code installations. Decide what to keep, delete, or refresh across plugins, skills, and rules — grounded in your actual session history.

updated Apr 2026

promptc

2
@edenfunf

Measure worst-case skill-context exposure in your Claude Code setup.

updated Apr 2026

imap-client

2
@codd-tech

Agent skill: read & search IMAP mailboxes from the CLI via myl. For OpenClaw, Claude Code, AgentSkills. Gmail / Yandex / Mail.ru / autodiscovery.

updated Apr 2026

data-science-with-dennis

2
@dswithdennis

Real-world data science methodology as a Claude Code skill — process, not algorithms, is the work. By Data Science With Dennis.

updated Apr 2026

insurancexdate-mcp

2
@toddshaner

TypeScript MCP server (.mcpb Desktop Extension) for the InsuranceXDate workers'-comp prospect database and SERFF rate-filing API. 7 tools, full upstream schema coverage, production-grade error handling. Unofficial third-party client.

updated Jul 2026

deep-research-skill

2
@tessellated-statisticalcommission243

Deliver deep research with a 5-layer Claude skill for markets, products, competitors, regulations, and opportunities

updated Jul 2026

figma-android-xml

2
@jahonn

Claude Code skill: high-fidelity Figma-to-Android XML restoration via Figma MCP, with 22 battle-tested pitfalls

updated Jul 2026

studiomeyer-crew

2
@studiomeyer-io

Agent Personas as MCP Server — 16 tools, 13 personas (8 free: CEO, CFO, CTO, CMO, PM, Analyst, Support, Creative Director + 5 Pro specialists), 3 multi-persona workflows plus councils + ensembles. Zero LLM API cost (BYO-LLM). Free tier. OAuth 2.1. Hosted at crew.studiomeyer.io

updated Jul 2026

smart-cascade

2
@shttty

A Claude Code skill for tiered model orchestration across configurable Advisor/Planner/Executor layers

updated May 2026

artifact-organizer

2
@keepYaoung

Agent skill that turns semantic JSON into self-contained, themed HTML — then stacks your artifacts into one persistent, restyleable dashboard. Zero dependencies, opens offline.

updated Jun 2026

memory-map

2
@shandar

A complete memory loop for Claude — snapshot, recall, and prune project context across sessions

updated May 2026

claudegram

2
@sanjar-x

Production-grade Claude Code plugin: control your personal Telegram via MTProto (Telethon). 120 typed MCP-tools, 9 resources, 7 prompts, 6 skills, 4-layer PreToolUse safety net, channel-push & permission relay

updated May 2026

hivemind

2
@abderrahimghazali

Bridge Claude Code and Codex on the same machine — second opinions, brainstorms, and direct MCP tool access between two AI coding agents.

updated Jun 2026

agentfetch-mcp

2
@bch1212

MCP server for fetching web URLs with token estimation, caching, and intelligent routing. Built for AI agents.

updated Jul 2026

claude-skills-public

2
@Damon-Stewart-1

Claude Code skills, hooks, and commands

updated Jul 2026

loadout

2
@JOndarza

A VSCode extension that lets you switch agent, skill, and command configurations as if they were loadouts in a game. Save profiles, swap between them with one click, sync items across projects through a global catalog, and configure Claude Code behavior — all from a single panel.

updated May 2026
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