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

AUDITLY-AI-Spend-Audit

1
@IshaMahadev

A brutalist, mathematically-defensible web tool that instantly audits AI infrastructure spend (Cursor, Claude, Copilot) to identify wasted capital and oversized subscriptions. Built with Next.js, Prisma, and Anthropic.

updated May 2026

termination-scanner

1
@SamirSaad786

AI-powered termination risk analysis tool for HR professionals. Upload a termination document and receive a structured risk assessment covering legal exposure, documentation gaps, and compliance concerns — powered by the Anthropic Claude API.

updated May 2026

robotics-skills-suite

1
@Brownbettywoodsorrelfamily890

Deploy 76 audit-ready robotics skills for Claude with integrated KPI dashboards, ISO standard compliance, and automated builder-reviewer chains for ROS2 projects.

updated Jun 2026

wealthsimple-mcp

1
@tatianathevisionary

Unofficial MCP server exposing the Wealthsimple Help Center to AI agents — 7 typed tools, public Zendesk JSON API only. No scraping, no auth, no account data. TypeScript + Zod-validated. Opt-in Datadog LLM Observability with privacy redaction.

updated May 2026

Anthropic-Skills-for-enterprise-marketing-os

1
@afelipeg

30 connected Claude Skills for enterprise marketing ops. Install in-house to replace fragmented tools or reclaim outsourced operations. Marketing & Comms [working & non-working media]· CRM & Growth · Shopper & Trade · RGM · Finance.

updated May 2026

swiftui-mac-pro-skill

1
@toankhontech

Production-grade Claude Code skill for Mac SwiftUI development. macOS 15 Sequoia + macOS 26 Tahoe (Liquid Glass). 18 reference files (~370KB), Apple-docs-grounded. Multilingual: English + Vietnamese + 简体中文. Future macOS added as Apple ships.

updated May 2026

tokenometer

1
@faraa2m

LLM cost calculator, token counter, latency benchmark, CI guardrail, MCP server, and VS Code/Cursor extension.

updated May 2026

Claude-Skill-Creator

1
@valorisa

A meta-skill for Claude Code (Anthropic CLI) that guides you through creating, testing, and iterating custom skills via structured conversation. Designed with LLM Council methodology: interview intent, generate draft, smoke-test immediately, refine until satisfied. A skill is just a markdown file — this tool embraces that simplicity.

updated May 2026

gohighlevel-mcp-pro

1
@nafiurrahmanniloy

Hardened GoHighLevel MCP server: 566 tools, lean-mode (74% smaller default context), 15 bug fixes, 14 agency-grade composites. Future-proofed for July 2026 webhook auth migration.

updated May 2026

apex

1
@Apex-Radar

Answer Engine Optimization toolkit for Claude. Diagnose how well your site is understood and cited by ChatGPT, Claude, Perplexity, Gemini.

updated May 2026

ios-marketing-att-skill

1
@Rylaa

Claude Code skill for iOS marketing channel attribution under ATT — covers AppsFlyer, Adjust, Meta AEM, Apple Ads, SKAdNetwork 4, AdAttributionKit. Production-grade debugging + audit playbook.

updated May 2026

abs

1
@automatiabcn

Self-hosted AI orchestrator — 100+ MCP tools, 6-provider cascade, RAG hybrid. Automate the chaos on your own server. An Automatia BCN product.

updated May 2026

ig-creator-kit

1
@lucas-araujo-dev

Anthropic Claude skill for Instagram content & growth — Reel scripts, hooks, carousels, captions, audits. Bilingual EN + PT-BR.

updated May 2026

ai-digest

1
@impendingpunk-debug

A personal AI news briefing app built with vanilla HTML/CSS/JS and the Anthropic Claude API. Fetches live headlines across model releases, research, tools, and tutorials on demand. Features a 7-day rolling archive, tap-to-read article links, and zero backend — just one file, one API key, runs anywhere.

updated May 2026

mailoutofspam

1
@pouyA-png

Claude Skill + standalone toolkit to rescue email deliverability without spam-evasion. SPF/DKIM/DMARC audit, RFC 8058 unsubscribe, bounce parsing, throttle, raw-header verification.

updated May 2026

Skills_Curator

1
@captkernel

Decide once. Re-decide never. A Claude Code skill that evaluates skills before installing and persists every decision.

updated May 2026

agent-saga

1
@bbismm

A Claude Code skill: turn your real cooperative work with AI agents into a serialized novel. Documentary fiction anchored on git history, logs, journals, conversation transcripts.

updated May 2026

mem-fusion

1
@muycoreano

Memory fusion for Claude Code — across sessions, cognitive layers, and machines. Personal memory today; group memory via the bundled Constellation extension in v0.3.0.

updated May 2026

god-mode-os-for-claude-code

1
@Wishmakingfairy

Discipline hooks for Claude Code. Stops the agent from claiming 'done' without proof, blocks accidental writes to ~/.claude config, and routes prompts to skills via local pgvector with zero Anthropic tokens.

updated May 2026

garmin-mcp

1
@Tyler-Irving

An MCP server that exposes your Garmin Connect health & fitness data to Claude — sleep, HRV, training load, body battery, and more — plus an opt-in tool to build strength workouts. Read-only by default.

updated May 2026

KoGEO

1
@muniv

한국어 콘텐츠를 생성형 AI(ChatGPT·Perplexity·Gemini·Claude)에 더 잘 인용되도록 최적화하는 Claude Skill — Princeton KDD 2024 GEO 논문 기반

updated May 2026

seo-launchpad

1
@Taltal190002-mov

Production-grade SEO bootstrap skill for Claude Code — by LogicFlow. Robots, sitemaps, JSON-LD schemas, llms.txt for AI search, and a 12-week growth playbook.

updated May 2026

AccessLens-RAG-MarketAccessTool

1
@egehankocak99

AccessLens — Production RAG system for EU Market Access intelligence. Synthesizes evidence from PubMed, ClinicalTrials.gov & OpenFDA across EMA, G-BA, HAS, AIFA and more. Hybrid search · Cross-encoder reranking · Claude-powered generation · RAGAS evaluation.

updated May 2026

UI-UX-master-skill-for-Claude

1
@MarwanAljijakli

Take any UI from average to world-class. A Claude skill for rigorous, domain-aware UI/UX redesign.

updated May 2026
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