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

8236entries
★ starsA–Z name

fable-mode

3
@PH5h5W6d2L

Autonomous high-reasoning operating mode for Claude Code — Fable 5's working behaviors as a drop-in skill

updated Jul 2026

github-profile-readme

3
@boffti

A Claude skill that builds a great GitHub profile README — 9 archetypes distilled from 181 real profiles, with templates and a widget generator.

updated Jul 2026

fable-frontend-skills

3
@Syo-M

Measured, opinionated Claude Code rules for frontend work (React / Next.js / Vite / Astro) — skills, path rules, review agents, sign-off hooks, installer & plugin. Every claim backed by committed eval reports.

updated Jul 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

claude-forge

3
@ArieGoldkin

Claude Forge — a suite of domain-agnostic Claude Code plugins sharing hook infrastructure via symlinks: session continuity, DevOps/AWS/Terraform, AI/LLM patterns, frontend & UI, and engineering & code review. MIT.

updated Jul 2026

screenshot-to-html

3
@sevzq

Clone any UI screenshot into one faithful, interactive single-file HTML page — an AI coding-agent skill.

updated Jun 2026

baton-pass

3
@Rorogogogo

Pass the baton before your context runs out: a Stop-hook + skill that hands a long agent session off to a fresh one to cut token cost.

updated Jul 2026

nexum

3
@dropdevrahul

Claude Code plugin that cuts context tokens and model cost — output-truncation hooks, an Opus-plans/Sonnet-Haiku-implements workflow, and workflow-hygiene guards.

updated Jul 2026

ClaudeCodeManual

3
@NickScherbakov

The first Russian-language based course on multi-agent orchestration in Claude Code: workflow tools, pipelines, adversarial verification, and budget loops. 15 chapters + 14 labs.

updated Jul 2026

claudberghini

3
@dennisonbertram

Claude Code on Taalas's silicon-baked Llama 3.1 8B (~14,500 tok/s, ~1,000x faster than Opus). A tiny Anthropic-API proxy with tool translation, best-of-N reliability, and a safety guard. 🦞🏎️

updated Jun 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

qapla-api-skill

3
@Qapla

AI agent knowledge pack for the Qapla' public REST API (v1.3) — shipments, raw orders, carrier labels, tracking, real-time quotes, PUDO, webhooks. Works as a Claude skill, an AGENTS.md, or a Cursor rule.

updated Jul 2026

woodworking-skill

3
@bacarndiaye

Claude skill: from a sketch to a complete build package — dimensioned plans, cut list, cutting diagram, and an interactive 3D model.

updated Jul 2026

nib

3
@caezium

Turn any idea or article into hand-drawn editorial illustrations starring your own character — free on your ChatGPT/Codex sub. An agent skill (Claude Code, Codex, Cursor, Gemini) + a macOS app.

updated Jun 2026

Claude-Familiar

3
@NadimJebali

A desktop 'familiar' for Claude Code: a floating pixel-art mascot whose face reflects what Claude is doing live, driven by Claude Code hooks. Python, Windows/Linux.

updated Jul 2026

pdf-fax-optimizer

3
@petehottelet

Agent skill (SKILL.md) that maximizes document quality and readability over fax — converts a PDF to a 1-bit CCITT-G4 PDF/TIFF that arrives LEGIBLE after Group-3 transmission, with 17 halftone methods and a multi-up comparison preview. For Claude and OpenAI Codex.

updated Jul 2026

kaggle-dominator

3
@KapaSique

A Claude Code skill that turns the agent into a relentless Kaggle Grandmaster — battle constitution + technique arsenal.

updated Jul 2026

molnify-app-builder-skill

3
@molnify

Official Agent Skill for building Molnify apps - turn Excel/Google Sheets formulas into spreadsheet-driven web apps. Create from scratch, convert existing spreadsheets, validate and style. Works with Claude Code, Claude.ai, and any skills-compatible AI.

updated Jul 2026

deepen-skill

3
@Brianhkerr

An Agent Skill that builds genuine expertise in any topic: track-record-weighted sources, falsifiable stances, anti-hallucination cite-or-flag, and a compounding knowledge base.

updated Jun 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

bug-triage-skill

3
@David-021-events

Take raw feedback and structure it into a proper bug ticket, investigate probably cause and then prioritize.

updated Jul 2026

Components

3
@AnayDhawan

Skill letting agents fetch proven animated React and Tailwind components live instead of hand-coding buggy UI from scratch.

updated Jul 2026

3d-brain-animations

3
@SamedVossberg

One-prompt 3D brain-region figures & rotating glow animations from 200+ BrainGlobe atlases (any species), rendered headless in Blender. A low-token Claude Code skill.

updated Jul 2026

lld-flow-explorer

3
@SI-Jothee

A Claude Code skill that turns a Low-Level Design doc (sequence diagrams, state machines, pipelines) into one interactive, animated request-flow explorer.

updated Jun 2026
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