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

moo.md

33
@saadshahd

Stay present with AI. A Claude Code plugin that keeps you understanding what you sign to own.

updated Jul 2026

spec-flow

33
@echoVic

A Claude Code skill for structured, spec-driven development with phase-by-phase workflow and living documentation

updated Jul 2026

SkillEval

33
@justinwetch

A visual workbench for A/B testing AI skills. Upload two skill files, run them through a batch of test prompts, and let an AI judge score the results.

updated Jul 2026

open-science-skills

33
@scdenney

A library of Agentic Skills for Claude Code and LLM agents, codified from social science standards and methodological texts for doing experimental and other kinds of work.

updated Jul 2026

claude-skills

33
@Yrzhe

A collection of Claude Code skills and plugins. Includes intelligent web scraper with self-learning capabilities.

updated Jul 2026

bettercallclaude

33
@fedec65

A powerful plugin for Claude Cowork Desktop, designed specifically for Swiss legal professionals. 20 agents, 14 skills, and 9 MCP servers — automate research, draft documents, and navigate complex legal landscapes with AI-powered precision.

updated Jul 2026

surreal-skills

33
@24601

Expert SurrealDB 3 skill for AI coding agents (Claude, Codex, Amp, Gemini CLI, Copilot, Cursor). SurrealQL, multi-model data modeling, graph queries, vector search, WASM extensions, and full ecosystem.

updated Jul 2026

ClaudeSkills-SprintClub

33
@SimonTheSalesBooster

Claude Skills For Sales Optimization

updated Jun 2026

openevidence-mcp

33
@bakhtiersizhaev

First open-source OpenEvidence MCP server: browser-session medical research tools for Codex, Claude Code, and MCP clients

updated Jul 2026

trueline-mcp

33
@rjkaes

Smarter reads, safer edits. An MCP plugin that cuts token usage and catches editing mistakes before they hit disk. Supports Claude Code, Gemini CLI, GitHub Copilot, and Codex.

updated Jul 2026

shortlistjobs-mcp

33
@MLS-Tech-Inc

MCP server for Shortlist — search, queue, and auto-apply to jobs from Claude Code

updated Jul 2026

permafrost-tools

33
@dead1786

Battle-tested utilities for AI coding assistants. Self-guard hooks, memory GC, pitfall tracking.

updated Jul 2026

pencilplaybook

33
@stevembarclay

PencilPlaybook is the UI Skills / Taste-Skill for Pencil.dev + Claude Code — a design playbook that gives Claude real perceptual psychology and senior-level guardrails so it stops producing averaged-out AI slop.

updated Jul 2026

llm-knowledge-bases

33
@rvk7895

Claude Code plugin for building LLM-maintained Obsidian wikis from raw research — compile, query, lint, and evolve your personal knowledge base. Inspired by Karpathy's knowledge base workflow.

updated Jul 2026

plurai-plugins

33
@plurai-ai

Claude Code plugin for creating LLM-as-a-judge evaluators using the Plurai platform

updated Jul 2026

appcontrol-mcp-go

33
@AppControlLabs

AppControl MCP is a local server connecting AI agents and IDEs like Claude, Cursor, and Windsurf to system history provided by the AppControl desktop app. Ask which apps used CPU, GPU, RAM, or disk, and what caused slowdowns, heat spikes, or webcam, mic, and location access. Built for deep historical monitoring and useful real-world PC insights.

updated Jul 2026

memem

33
@TT-Wang

A Claude Code plugin that gives Claude persistent memory across sessions — stores lessons and decisions as markdown in your Obsidian vault, searches them with SQLite FTS5, and mines past transcripts automatically.

updated Jul 2026

skills

33
@AlemTuzlak

Personal AI agent skills for Claude Code, Copilot, Codex, Gemini & Cursor — turn a PR or idea into marketing content, technical Slidev presentations, courses, changelogs, and rendered videos.

updated Jul 2026

claude-code-bsl-lsp

33
@1c-syntax

Claude Code plugin — BSL Language Server LSP for 1C:Enterprise (BSL) and OneScript (OS) files

updated Jun 2026

mma-mcp

33
@siqiliu-tsinghua

A MCP server that wraps a local Wolfram Engine, enabling AI assistants (Claude, ChatGPT, etc.) to perform symbolic math, numerical analysis, and data visualization via Wolfram Language.

updated Jun 2026

unclog

33
@thomaschill

Audit MCP servers, skills, and CLAUDE.md bloat eating your Claude Code context window.

updated Jun 2026

kimi-for-claude

33
@7D-codes

MCP server that lets Claude Code delegate tasks to the Kimi CLI agent

updated Jul 2026

trdizin-skill

33
@saidsurucu

AI agent skill for TR Dizin (trdizin.gov.tr) — search Turkish academic publications, journals, authors & institutions via the open JSON API, with advanced field search, references/citations, and PDF-to-text. No browser, login, or API key; works with Claude Code, Codex, and other agents.

updated Jul 2026

fastapi-claude-template

32
@ocbunknown

Agent-first FastAPI template built to pair with Claude Code - opinionated architecture kept on the rails by custom skills, hooks and review agents.

updated Jul 2026
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