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

8245entries
★ starsA–Z name

claude-code-cache-fix-vscode

0
@cnighswonger

VS Code extension for claude-code-cache-fix — one-click interceptor activation

updated Jul 2026

gh-claude-costs

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@joelisfar

GitHub CLI extension: Claude Code usage cost dashboard

updated Apr 2026

ClaudeCodeExtensionClone

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@RyanAJensen
updated Apr 2026

mac_open-claude-code

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@MarkShawn2020

Finder extension: right-click to open Claude Code in iTerm2

updated Apr 2026

simple-replit-ClaudeCode-helper-chrome-plugin

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@DawidGrabanowski

Chrome extension that helps paste Claude Code auth codes into Replit Shell terminal

updated Apr 2026

n8n-unified-mcp-server

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@anshwysmcbel2710

Production-grade Unified MCP Server architected to bridge enterprise n8n automation with agentic LLM ecosystems. Engineered for high-scale reliability with structured logging, multi-transport support (SSE/STDIO), and context-aware orchestration. Accelerating AI-native business infrastructure via secure, deterministic, and scalable workflow control.

updated Apr 2026

vs-extension-workforest

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@0xdeafcafe

VS Code extension for viewing Claude Code git worktrees

updated Apr 2026

claude-code-forwarder

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@dans-huang

Forward Gmail and Slack threads to Claude Code with Cmd+Shift+F. Chrome extension + local webhook + tmux + Claude Island.

updated Aug 2026

browser-extension-creator

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@shubaomi

Guide Beginners to Make Their Own Browser Plugins with Claude Code

updated Apr 2026

ai-extensions

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@dmorand17

A collection of skills for Claude Code and Kiro agents

updated Jul 2026

claude_code_limits_gnome_extension

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@davidemodolo
updated Jul 2026

go-agent-skills

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@Gisellesleeveless396

Provide Go agent skills for cleaner, idiomatic code across Claude Code, Cursor, Copilot, and more with one install

updated Aug 2026

neuro-mcp-unified-orchestration-engine

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@bitsandbrainsai

Production-grade NeuroMCP orchestration engine that unifies n8n workflows with agentic LLM ecosystems, delivering secure, deterministic, and scalable automation. Features context-aware execution, multi-transport support, structured observability, & fault-tolerant design, powering AI-native, resilient, & high-performance enterprise infrastructure.

updated May 2026

claude-code-terminal-manager

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@wildzipper

VS Code extension to manage Claude Code CLI sessions across multiple terminals

updated Apr 2026

measurement-uncertainty-mcp

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@kyb8801

MCP server for GUM (JCGM 100:2008) measurement uncertainty - Type A/B, Welch-Satterthwaite, coverage factor k, Monte Carlo per JCGM 101. For ISO/IEC 17025 and ISO 10012:2026 labs.

updated Aug 2026

free-claude-code

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@aashishgarg13

Use claude-code for free in the terminal, VSCode extension or via discord like openclaw

updated Jun 2026

utools-extension-skill

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@ElaineRosa6

Build, develop, and publish uTools plugins - Claude Code / Codex skill

updated May 2026

Claude-code-free

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@havalya

. 🔥 1. Main GitHub Project (Free Claude Code Proxy) 👉 Free Claude Code GitHub Repo Repository: free-claude-code What it does: Lets you run Claude Code CLI / VSCode extension for FREE No Anthropic API key required Uses NVIDIA NIM (free tier), OpenRouter, or local models

updated Apr 2026

claude-code-rg-patcher

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@X-15

Auto-patches the Anthropic Claude Code VSCode extension on Windows to fix the 'spawn rg.exe ENOENT' error.

updated Apr 2026

vora-voice-mcp

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@stefanstojanovicstefa-creator

Voice + telephony MCP for autonomous AI agents. Pay per minute in USDC on Base via x402.

updated Apr 2026

the-extension

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@aidanjnn

claude code for building extensions

updated Aug 2026

pr-reader-extension

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@masonstevens95

a VSCode plugin that helps read PRs using Claude Code

updated Apr 2026

vari-mcp

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@getvari

Vari Hydration Tools — public MCP server for Claude Desktop, Cursor, and other MCP clients. Six deterministic hydration calculators (water intake, dehydration, pregnancy, kidney, athlete, energy-optimizer).

updated Apr 2026

RBI-Source-MCP

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@harshilmathur

Hosted MCP server for Reserve Bank of India regulatory citations. Paste a clause into Claude / ChatGPT / Cursor, get cited RBI provisions back. Retrieval-only, citation-first.

updated Jun 2026
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