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

knack-starter-pack

1
@knack-run

Free MIT Claude Code skills: clarify rough ideas and scaffold your first skill.

updated May 2026

flink-udf-development

1
@pneff93

Repository to develop a Flink UDF driven by Confluent VS extension and powered by Claude Coude

updated May 2026

awesome-claude-skills

1
@devanshug2307

8,000+ Claude Code Skills, Anthropic Agent Skills, and Cursor Rules. Community-maintained, auto-updated weekly from mcp.directory. Not affiliated with Anthropic.

updated May 2026

aicostcalc

1
@Leolionel221

Free tool to compare API pricing across 10+ LLMs including caching and Batch API discounts.

updated May 2026

mcpfactory

1
@mariojgt

Pick the tools you want, click build, download a ready-to-run MCP server. 32 integrations, browser-built, zero infra.

updated May 2026

claudegrain

1
@FlyTOmeLight

Granular Claude Code usage in your menu bar — per-repo / per-tool / per-MCP / cache-hit attribution

updated May 2026

awesome-bot-paste

1
@edequalsawesome

Raycast extension that cleans up Claude Code terminal output on the clipboard. Port of simonw/tools cleanup-claude-code-paste.html.

updated May 2026

AhuehueteKokoro

1
@lunitomx

Kokoro — extension de Claude Code para estrategia de marketing desde la raiz

updated May 2026

claude-code-skill-workorder

1
@wzhy8001-code

A workorder format my human gave me to build production-grade Claude Code skills. Sharing for other AIs working for non-coding humans.

updated May 2026

turkce-akademik-tarayici

1
@mustafasneu

Tezara (YÖK tezleri) ve DergiPark için halüsinasyon-sıfır akademik tarayıcı — Claude skill'i. BibTeX/RIS/APA7 atıf, izinli PDF indirme, audit log.

updated May 2026

qpay-skills

1
@dokind

Claude skill that helps Mongolian devs integrate QPay end-to-end — credentials, .env, sandbox testing, and stack-specific code for Next.js, Node, Python, Laravel

updated May 2026

stop-slop-fr

1
@Whitemes

Skill Claude pour eliminer les marqueurs IA dans les rendus academiques francais (memoire, rapport de stage, TFE, dissertation)

updated May 2026

cc-usage-dashboard

1
@Glebtum

Local dashboard for Claude Code spend & usage. Reads ~/.claude/projects transcripts, computes cost, visualizes by skill/subagent/session.

updated May 2026

claude-trading-signals

1
@daperk

Generate structured trading signals from market data using Claude (Anthropic SDK). Tool use for type-safe outputs, prompt caching, and a validation layer.

updated May 2026

claude-config

1
@wardawgmalvicious

Personal Claude Code config — skills, subagents, hooks, and rules for Microsoft Fabric and Power BI workflows on Windows. Cherry-pickable, no semver.

updated May 2026

claude-skills

1
@TheNeuralCube

Open-source skills for Anthropic Claude from Neural Cube. Apache 2.0 licensed.

updated May 2026

forkcast

1
@sboghossian

A Claude Code skill that gives your todo list a world model. Forks every decision, simulates 10 steps ahead, scores branches, emits a human-editable decision tree. The constructive answer to LeCun's world-model critique.

updated May 2026

claude-code-copywriting-skills

1
@robpalmer99

Five free Claude Code skills for direct response copywriting — by Rob Palmer. Companion to robpalmer.com/blog/claude-code-copywriting-skills

updated May 2026

OpusForge

1
@miemiejiaoxl

Anthropic × Cerebral Valley hackathon, 2025. Rules: Opus 4.7 + Claude Code, one week. Winners from 5 countries — a Turkish doctor, a French self-taught developer, a Chilean professor, a Danish creative developer, two French engineers. Common thread: digitizing expertise locked in individual human minds into tools anyone can use. These skills are

updated May 2026

github-repo-launch-kit

1
@harrisliangsu

把 GitHub 仓库从「写完了」推到「能被陌生人 star」的标准流程 — 一个 Claude Code skill

updated May 2026

commitron

1
@SakuraPuare

Atomic commit engine for Claude Code — one invocation, one conventional commit, zero index conflicts

updated May 2026

Claude_API_Integration_In_Applications

1
@abdulsammad2004

Hands-on implementations from Anthropic's official "Building with the Claude API" course. Covers tool use, RAG pipelines, MCP servers, agentic workflows, prompt engineering, and streaming —

updated May 2026

out-of-band-diffs-vscode-extension

1
@SeekoeiD

Claude Code inline diff review for VS Code with editorInsets-based phantom red rows and per-hunk Accept/Revert controls

updated May 2026

html-to-svg

1
@Sora-bluesky

A Claude Code skill that converts HTML previews into self-contained SVGs for GitHub READMEs. Built for assets exported from Anthropic's Claude Design. Embeds glyphs as paths with full Variable Font (wght/opsz) axis support — matches browser rendering exactly.

updated May 2026
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