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

8250entries
★ starsA–Z name

algokiller-plugin

59
@icloudza

ARM64 trace evidence analysis & cipher algorithm recovery — Claude Desktop plugin with skills + local MCP server driving the native ak_search engine over GB-scale trace files

updated May 2026

simulacra

59
@mturac

Ghost personas review your code before it ships. Find edge cases, race conditions, and business logic bugs before production.

updated Jun 2026

vrchat-mcp

58
@sawa-zen

This project is a Model Context Protocol (MCP) server for interacting with the VRChat API.

updated May 2026

mcp-server-atlassian-confluence

58
@aashari

Node.js/TypeScript MCP server for Atlassian Confluence. Provides tools enabling AI systems (LLMs) to list/get spaces & pages (content formatted as Markdown) and search via CQL. Connects AI seamlessly to Confluence knowledge bases using the standard MCP interface.

updated May 2026

MCP_Atom_of_Thoughts

58
@kbsooo

Atom of Thoughts (AoT) MCP is a server that decomposes complex problems into independent atomic units of thought, using the dependencies between these units to deliver more robust reasoning and validated insights.

updated May 2026

duckdb-acp

58
@sidequery

Use Claude Code & other AI agents from inside DuckDB via extension

updated May 2026

cc-gemini-plugin

58
@thepushkarp

Gemini CLI integration for Claude Code and Codex.

updated May 2026

caido-mcp-server

58
@c0tton-fluff

MCP server for Caido proxy integration. Enables AI assistants like Claude Code to browse, analyse, and interact with HTTP traffic.

updated May 2026

mcp-atom-of-thoughts

58
@dioptx

MCP server for structured AI reasoning — decompose problems into atomic thoughts with dependency graphs, confidence tracking, and interactive D3.js visualization

updated May 2026

tiger_cowork

58
@Sompote

A self-hosted AI workspace unifying chat, code execution, parallel multi-agent orchestration, and project management. Each agent runs on a distinct provider — OpenAI-compatible APIs, Claude Code, or Codex CLI. MCP servers extend the toolbox. Built for 100+ tool-call sessions with context compression and checkpoint recovery.

updated Jun 2026

openexp

58
@anthroos

Outsource your understanding. Capture every human-AI decision as a step in a trajectory; grade trajectories retroactively when outcomes land (deal closed, sprint shipped). Hooks + MCP server for Claude Code, Qdrant + FastEmbed local-first.

updated May 2026

claude-plugin-wechat

58
@lc2panda

【多渠道 Claude Code 插件】 微信、飞书/Lark 无缝对接 Claude Code。 支持:文字、图片、文件、语音、视频、远程权限审批、飞书文档

updated Jun 2026

company-os-starter-kit

58
@Workflowsio

Build your own Company OS with Claude Code. CLAUDE.md template, 5 GTM skills, workflow plugin, safety hooks, and full blueprint.

updated Jun 2026

claudecode-deepseek-stack

58
@MG-Cafe

Replace Anthropic Claude Code 200/mo billing with DeepSeek V4 for ~7/mo. Two env vars, no third-party tool. Live-tested 95x cheaper.

updated Jun 2026

mcp

58
@bountylens

BountyLens MCP server — connect Claude Code to your Hunter Tracker

updated May 2026

plumb-mcp

58
@tathagat22

Local Figma MCP server with no REST rate limits, no metered tool-call quotas, and a verification loop. Drop-in alternative to Figma's Dev Mode MCP and Framelink for Claude Code, Cursor, Windsurf — works on every plan including Free.

updated Jun 2026

claude-3-api

57
@claude-php

Claude 3 API PHP Package: Seamlessly integrate Anthropic's Claude 3 AI into your PHP projects. Features simple chat interface, advanced message handling, vision capabilities, streaming support, and tool usage. Ideal for text processing, image analysis, and complex AI tasks. Fully tested and error-handled.

updated Apr 2026

DelphiAnthropic

57
@MaxiDonkey

The Anthropic API wrapper for Delphi leverages cutting-edge models, including Anthropic's advanced Claude series, to deliver powerful features for chat interactions, vision processing, caching, efficient batch processing, connector MCP, skills and managed agents.

updated May 2026

hana-mcp-server

57
@HatriGt

SAP HANA MCP server — Enterprise Model Context Protocol server for SAP HANA. Use with Claude Code, VS Code. npm: hana-mcp-server

updated May 2026

calculator-mcp-server

57
@huhabla

A Model Context Protocol (MCP) server that provides Claude with advanced mathematical calculation capabilities

updated May 2026

google-calendar-mcp

57
@takumi0706

Google Calendar MCP server for Claude Desktop integration

updated Jun 2026

last9-mcp-server

57
@last9

Last9 MCP Server

updated Jun 2026

mcp-kubernetes

57
@Azure

A Model Context Protocol (MCP) server that enables AI assistants to interact with Kubernetes clusters. It serves as a bridge between AI tools (like Claude, Cursor, and GitHub Copilot) and Kubernetes

updated May 2026

scheduler-mcp

57
@PhialsBasement

MCP Scheduler is a task automation server that lets you schedule shell commands, API calls, AI tasks, and desktop notifications using cron expressions. Built with Model Context Protocol for seamless integration with Claude Desktop and other AI assistants.

updated May 2026
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