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

8165entries
★ starsA–Z name

agentfetch-mcp

0
@bch1212

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

updated May 2026

pi-migrate

0
@Zpankz

Migrate Claude Code plugins and future agent extensions into native Pi packages

updated May 2026

excel-claude

0
@dmdfami

HTTPS bridge for Claude for Office and Claude Desktop 3p — works with 9router and any Anthropic-compatible gateway. Auto-handles cert trust, tool-name un-mangling, launchd auto-start.

updated Apr 2026

claude-text-summarizer

0
@lumufa

CLI tool to summarize URLs or text files using the Anthropic Claude API with prompt caching.

updated Apr 2026

skill-scrolls

0
@Stephensmetana

A collection of SKILL.md instruction modules for Claude Code — covering Python, Chrome extensions, Redot game dev, and agentic tooling.

updated May 2026

convertmodel-claude-code-codex-relay

0
@UnstoppableCurry

Claude Code and Codex relay guide for OpenAI-compatible base URLs, Anthropic endpoints, subagents, tools use, 429 and model routing.

updated Apr 2026

agentbroker

0
@basilalshukaili

MCP server where AI agents discover, verify, message and book appointments with small businesses - pay per call in USDC on Base (x402, no signup; reads free, writes paid). 14 tools, built-in TCPA/GDPR/CASL compliance gate.

updated May 2026

claude-gemini-mcp

0
@Impossible-Studio-TW

Use Google Gemini in Claude via Google OAuth (no API key needed). Wraps the official gemini CLI.

updated Apr 2026

claude-gpt-image2-mcp

0
@Impossible-Studio-TW

OpenAI gpt-image-2 / gpt-image-1 in Claude. Multi-image reference + Chinese text rendering. Auto-resizes oversize inputs.

updated Apr 2026

claude-rl-monitor

0
@DRT-Systems

Claude Pro / Max rate limit monitor — VS Code status bar extension + Claude Code hooks for context handoff at usage limits.

updated May 2026

claude_course

0
@pponali

Practice repository for Claude Code Architect Certification — covers prompting, tool use, embeddings, RAG, streaming, and extended thinking with the Anthropic SDK

updated Apr 2026

appleref-mcp

0
@nzrsky

Offline MCP server for Apple Developer Documentation, reading directly from a Dash-format Apple_API_Reference.docset

updated May 2026

claude-agent-patterns

0
@jasherjoshuachan

Four production-grade Claude API agent patterns: tool use, multi-step reasoning, memory, and structured output. Self-contained Python, no framework overhead.

updated Apr 2026

rethlas_vscode

0
@ocbaby

use rethlas in vscode with claude code or github copilot extension

updated May 2026

jacar-anthropic-sdk-demo

0
@jacarsystems

Production-shaped agent built with the Anthropic SDK and Claude Agent SDK — tool use, MCP, streaming, prompt caching, OpenTelemetry GenAI. Companion to jacar.es tutorials.

updated Apr 2026

skill-tools

0
@radovanx

Quality tooling for Claude Code skills — audit checklist + anti-patterns catalog. Complements anthropics/skill-creator.

updated Apr 2026

claude-skill-joomla

0
@Joomla-Bible-Study

Joomla 5+/6 extension development skill for Claude Code — components, modules, plugins, templates with modern MVC, PSR-4, DI, service providers.

updated May 2026

anthropic-tracker-mcp

0
@pete-builds

MCP server exposing Anthropic hiring data to Claude Code: cached SQLite tools + live Greenhouse API tools

updated May 2026

claude-terminal-title

0
@ranmedina

Let Claude Code (or any process) rename the active Cursor / VS Code terminal tab. Skill + extension.

updated May 2026

custtr_ai

0
@lbindhu

CourseDev team Claude Code skills extension

updated May 2026

speckit-subproj

0
@godalchemist360

Sub-project dispatch workflow extension for spec-kit, powered by Claude Code Agent Teams

updated Apr 2026

angular-agent-kit

0
@hragsarkissian

An Angular agent service with tool use, built on Anthropic's Claude API

updated May 2026

langchain-claude-agents

0
@berdyshevol

MSIS coursework: stateless chatbot → multi-turn chatbot → tool-using agent. Three Python scripts using LangChain and Anthropic Claude that make the chatbot→agent boundary explicit.

updated May 2026

vscode-extension-claude-code-ai-tracker

0
@hmredmond

Track your Claude Code AI costs in real-time directly in VSCode. Monitor daily and weekly spending, analyze model usage, and set cost alerts.

updated May 2026
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