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

mcp-seo-auditor

1
@arturseo-geo

MCP server for on-page SEO auditing — title/meta/H1-H6/canonical/schema/OG/images/links analysis + JSON-LD validator. Replaces SEO Minion + Detailed SEO Extension as Claude Code tools. By TheGEOLab.net

updated Jun 2026

j-rig-skill-binary-eval

1
@jeremylongshore

Binary-criteria evaluation harness for Claude skills with planned extension to plugins, agents, and MCP servers. Score every change yes/no across 7 layers — package integrity, trigger quality, functional quality, regression protection, baseline value, model variance, rollout safety. Never gradients.

updated Aug 2026

vscode-claude-sessions

1
@kevin-ghfr

VS Code extension for managing multiple Claude Code terminal sessions across projects

updated Jul 2026

claude-browser-bridge

1
@softwaresoftware-dev

MCP bridge between Claude Code and your real browser via a WebSocket-connected extension

updated Aug 2026

rocket-review

1
@ledger-rocket

Local pre-push AI code & plan review — cross-vendor second opinions (codex + claude), your standards, fail-closed CI gate. Not a bot.

updated Aug 2026

simply-ops-guard

1
@nardovibecoding

Claude Code plugin - 49 hooks + 28 MCP tools for enforcement, security scanning, prompt injection defense, VPS ops, audit logging

updated Jun 2026

foxcode

1
@korchasa

Firefox WebExtension giving Claude Code browser automation in your real browser — with your sessions, cookies, and extensions. The agent scripts multi-step scenarios in a single call instead of round-tripping per action.

updated Jul 2026

codereel

1
@NathanPickard

CodeReel project built during the Claude Code Hackathon in Portland, OR - 2026 - VS Code extension using Claude Code

updated Apr 2026

DevNotes-Plus

1
@Hiba-Chaabnia

DevNotes+ — a VS Code extension for developer notes anchored to files, lines, and git branches. Rich block editor, Claude Code MCP integration, GitHub PR/issue linking, and opt-in team sharing over git.

updated Aug 2026

claude-code-snapshot-20260331

1
@Sung-Kim0430

Claude Code is an agentic coding tool that lives in your terminal, understands your codebase, and helps you code faster by executing routine tasks, explaining complex code, and handling git workflows - all through natural language commands. All original source code is the property of Anthropic.

updated Apr 2026

claude-code-analysis

1
@leoshi01

Architecture analysis of Claude Code CLI — Anthropic's agentic coding tool (1,900 files, 510K+ LoC TypeScript)

updated Mar 2026

claude-code-fork

1
@aizuzi

Claude Code is an agentic coding tool that lives in your terminal, understands your codebase, and helps you code faster by executing routine tasks, explaining complex code, and handling git workflows - all through natural language commands. All original source code is the property of Anthropic.

updated Mar 2026

claude-code

1
@daytime001

Claude Code is an agentic coding tool that lives in your terminal, understands your codebase, and helps you code faster by executing routine tasks, explaining complex code, and handling git workflows - all through natural language commands. All original source code is the property of Anthropic.

updated Apr 2026

claude-code

1
@MuhammadHananAsghar

Deep static analysis of Anthropic's Claude Code CLI — extracted from npm source map leak (March 31, 2026). Architecture docs, API endpoints, tool system, MCP, plan mode, remote sessions, and more.

updated Mar 2026

nixos-vscode-claude

1
@MayNiklas

Fix the Claude Code VS Code extension on NixOS when using Remote SSH. The bundled claude binary doesn't work on NixOS due to hardcoded library paths. This Home Manager module runs a systemd user service that watches for extension installations and replaces the binary with a symlink to the NixOS claude-code package.

updated Jul 2026

claude-code_mancompany

1
@ihumbert

Claude Code is an agentic coding tool that lives in your terminal, understands your codebase, and helps you code faster by executing routine tasks, explaining complex code, and handling git workflows - all through natural language commands. All original source code is the property of Anthropic.

updated Apr 2026

google-messages-mcp

1
@GURSEWAKSINGHSANDHU

Chrome extension + MCP server bridging Claude Code to Google Messages Web for SMS/RCS automation

updated May 2026

claude-code-sdk

1
@canonical

Anthropic's agentic coding tool for the terminal.

updated Aug 2026

claude-code-project

1
@YidanHAI

Source code implementation of Claude Code - An AI-powered CLI tool and coding assistant powered by Anthropic’s Claude models.

updated Apr 2026

claude-code-profile-switcher

1
@SaiWebApps

VS Code extension to switch between multiple Claude Code configuration profiles via symlink management

updated Jun 2026

typo3-extension-analyzer-skill

1
@CybotTM

TYPO3 extension analyzer skill for Claude Code - analyzes naming compliance, publication status, and documentation

updated Aug 2026

aifuel

1
@robertogogoni

Real-time AI usage monitor for waybar. Chrome extension, bubbletea TUI dashboard, Admin API cost reports, Claude Code statusLine, 6+ providers, Catppuccin theme.

updated Jun 2026

prbuddy

1
@2389-research

PR health assistant - monitors CI, triages review comments, fixes issues with systematic prevention. Uses gh CLI and gh-pr-review extension.

updated Apr 2026

CCDEX

1
@Saqoosha

Claude Code Desktop Context Extension — Real-time context usage + rate limit indicator for Claude Desktop

updated Apr 2026
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