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

8281entries
★ starsA–Z name

claude-nginx-skill

★ 3
@tensorshift

Full-spectrum nginx skill for Claude — write, review, harden, and debug nginx configs.

updated Sep 2026

web-media-getter-skill

★ 3
@connerkward

web-media-getter — a Claude Code skill: one query across free image/video/GIF APIs, license-tagged results.

updated Oct 2026

Fable-5-to-ChatGPT-5-System-Prompt

★ 3
@alxspiker

A ChatGPT 5-compatible rewrite of a Claude Fable-style custom system prompt, translating Anthropic-specific identity, tooling, artifact, MCP, search, and file-handling rules into OpenAI/ChatGPT-style behavior.

updated Jul 2026

fable-like-skill

★ 3
@novalidesignl-ship-it

A Claude Code skill that brings Claude Fable 5's engineering discipline to Claude Opus 4.8 and other models: act decisively, ground progress claims in tool output, verify with fresh context, avoid over-engineering. Distilled from Anthropic's public Fable 5 migration guidance.

updated Oct 2026

accessibility-agents-marketplace

★ 3
@Community-Access

Marketplace for submitting and discovering Accessibility Agents extensions for other people and teams to use.

updated Jun 2026

daari

★ 3
@naveenreddyalka

Local-first LLM router: cache, tools, and local models before frontier APIs. Apache 2.0.

updated Oct 2026

ckw-skills

★ 3
@connerkward

ckw-skills — Conner K. Ward's Claude Code marketplace of skills + MCP servers: human-in-the-loop studios, deterministic design tooling, and personal-data search.

updated Sep 2026

resume-tailor-mcp

★ 3
@mr-martinsosa

An MCP server for ethical resume tailoring: tailor/score/extract tools over Anthropic structured outputs or key-less MCP sampling. TypeScript, tested, zero-fabrication.

updated Jul 2026

wlog

★ 3
@openwong2kim

See your Claude Code session's tokens, cost & tool decisions without standing up Grafana — a single-binary, local, zero-config observability dashboard with an embedded web UI and a native desktop app.

updated Jun 2026

alphacouncil-agent

★ 3
@Zhao73

Inspectable, source-traceable public-equity research for Codex, Claude Code, OpenCode, Grok Build and ChatGPT Work developer mode. 26 provisional method lenses, 34 MCP tools. Research software, not investment advice.

updated Sep 2026

ClaudeCodeUsage

★ 3
@Miku3w3

VSCode extension: real-time Claude Code token usage, cost & thinking time tracker. 28+ models, 11 languages, 7 currencies.

updated Oct 2026

agentix-toolkit

★ 3
@skwijeratne

A generic, batteries-included, async-first agent toolkit — configurable loop, tools, security guards, streaming, persistence, and MCP. Import as 'agentix'.

updated Sep 2026

claude-skills

★ 3
@adamlinscott

Open-source Claude Code skills that bring planning, building, and verification gates to agentic coding workflows.

updated Oct 2026

ai-form-filler

★ 3
@deepak0x

Auto-fill Google Forms from your profile using your local Claude Code subscription — no API key. Chrome extension + Node bridge.

updated Jul 2026

xtapdown-mcp

★ 3
@farukkolip

XTapDown MCP Server — 14 X (Twitter) creator tools for Claude, ChatGPT, Gemini and any MCP client

updated Sep 2026

claude-code-bedrock-usage

★ 3
@abdullahkhawer

A CLI tool to monitor your Anthropic Claude Code on AWS Bedrock usage like tokens consumed, spend per model, and budget status for the current or any past month within seconds in just one single command.

updated Aug 2026

anthropic-openai-proxy

★ 3
@davud-d

Lightweight FastAPI proxy bridging Anthropic Messages API to OpenAI Chat Completions. Run Claude Code with ANY backend (Ollama, OpenRouter, Abacus) with full SSE streaming & tool calling support.

updated Aug 2026

claude-agent-go

★ 3
@tggo

A Go SDK for the Claude Code CLI: one-shot runs, interactive sessions, in-process Go tools, permission & hook callbacks, inline subagents. Behaviorally verified against the real binary.

updated Jul 2026

receipt

★ 3
@noah-thing

See what your AI coding agent cost, itemized on every pull request. Token & dollar tracking for Claude Code, Cursor, Copilot, Aider & any OpenAI/Anthropic tool. Local ledger, sticky PR comment, GitHub Action, and dashboard.

updated Sep 2026

chinese-history-mcp

★ 3
@lizhuojunx86

A traceable Chinese-history MCP server: 4 tools over 9 classical texts (先秦-汉魏), every result cited (book→chapter→paragraph), honest review_status. Zero runtime dependencies.

updated Sep 2026

nimbalyst-replicad

★ 3
@nimbalyst

Nimbalyst extension for Replicad - use claude-code or codex to design 3d cad models, ready for printing

updated Oct 2026

freeway

★ 3
@vinaygiri

Local gateway that routes Claude Code, Codex & any OpenAI-compatible coding tool across 26 free-tier AI providers — with auto-failover, quota-aware routing, and request auto-fit.

updated Sep 2026

claude-kit

★ 3
@mohamed-ashraf-elsaed

One command sets up Claude Code (and any AI coding agent) on a Laravel project: engineering rules, a quality gate (PHPStan · Pint · Pest), skills, git hooks, and stack-aware frontend tooling.

updated Jul 2026

claucat

★ 3
@HUSS41N

Claude Code runs long agentic sessions in your terminal or VS Code. You switch to the browser, and… did it finish? Is it stuck waiting for you to press Allow? ClauCat is a tiny always-on-top bubble in the corner of your screen — above Chrome, Slack, everything, on every Space and fullscreen app — that answers those questions without you ever tabbin

updated Jul 2026
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