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

8250entries
★ starsA–Z name

claude-code-loop-patterns

2
@MPIsaac-Per

Loop-discipline patterns for Claude Code: Stop hooks with evidence files, three skills mapped to common failure modes, and reference samples for structured shell, structured tests, and prompt caching.

updated May 2026

cc-janitor

2
@CreatmanCEO

Tidy up your Claude Code environment — sessions, permissions, context, hooks, schedule. Open-source TUI/CLI.

updated May 2026

claude-code-ops-audit

2
@MPIsaac-Per

Methodology and tooling for auditing your own Claude Code session logs. Schema, ingest pipeline, analyses, and LLM-assisted verification-debt audit.

updated May 2026

claude-skill-activity-log

2
@SamDaMan636

Drop-in admin activity log feature for Next.js + Supabase dashboards. Append-only audit trail of who-did-what, packaged as a Claude Code skill.

updated May 2026

email-design

2
@CosmoBlk

Email design skill for Claude Code. Anti-slop emails — six committed archetypes, brand-aware briefs, real imagery, real footers. Works with any ESP via MCP (Nitrosend, Klaviyo, Mailchimp, ActiveCampaign).

updated May 2026

video-context-plugin

2
@vusallyv

Claude Code plugin: extract scene-change frames + audio transcript from any video so Claude can 'watch' it.

updated May 2026

pi-safety-cc

2
@code-B-rabbit

A pi-mono extension that ports Claude Code's security and permission system — intercepts every tool call with a multi-stage decision pipeline.

updated May 2026

claude-skill-cinematic-prompt

2
@adlaiponderous700

Generate production-ready cinematic video prompts for Higgsfield AI from reference images and project briefs.

updated Jun 2026

Browser_companion

2
@the-code-learner

Browser Companion is a Chrome MV3 extension scaffold for a chat-first browser agent. The extension observes the active page through constrained tools, keeps risky browser actions behind policy checks and confirmations, and is designed to connect to local subscription-based CLI providers without API keys.

updated Jun 2026

claude-dev-workflow

2
@ymuromcev

Claude Code skill: tiered (XS/M/L) development workflow with RFC-gating, smoke tests, multi-agent code review, and incremental security levels.

updated May 2026

claude-scaffold-project

2
@ymuromcev

Claude Code skill: bootstrap a new project in one conversation with base templates, opt-in stack extensions, and a self-augmenting feedback loop.

updated May 2026

claude-skill-design-md

2
@moesuito

Claude Code skill: turn any visual identity into a paired DESIGN.md + design-showcase.html. Built on the awesome-design-md format.

updated May 2026

open-pets

2
@EASYGOING45

Open Pets — chibi pet atlases + reusable AI Skill for Codex CLI / Claude Code

updated May 2026

aivc-dach

2
@ZeldoGiQ

🎬 AI Video Creator – Open-source video automation toolkit. Tell Claude Code what you want, get an MP4 back. No accounts, no API keys, fully local. Multilingual helper.

updated May 2026

gateway-switch

2
@gcristiano0624-bot

Claude/Codex runtime compatibility gateway. Beyond routing: protocol conversion (Responses↔Chat↔Anthropic Messages), tool-call JSON repair & fake-tool detection, secret redaction, MCP/Shell/Patch safety gates, context compression, agent recovery, provider capability profiling & benchmarks. 第三方模型无缝注入 Claude 和 Codex

updated May 2026

atrain-claude

2
@GHGuide

Dynamic Claude model + effort routing plugin for Claude Code. 5 tiered subagents, hook-based classification, 16/16 tests.

updated May 2026

tochi-satei-kun

2
@signal-yield

不動産鑑定士が公開する白箱方式の土地査定OSS。MLIT取引データからヘドニック回帰係数を都度推定、業者用シート(係数全開示)と顧客用シートを生成。Claude Coworkerシリーズ。White-box AVM skill for Japanese land price assessment. Re-estimates hedonic coefficients on every run from MLIT transaction data, generating broker-side worksheets (full coefficient disclosure) and client-facing assessment reports (xlsx). Part of the Clau

updated May 2026

claude-cdp-debugger

2
@Colgate13

A Claude Code skill that lets the agent live-debug any Node.js service via Chrome DevTools Protocol — discovers .vscode/launch.json automatically, sets breakpoints, captures pauses, inspects state, and reports back conversationally.

updated May 2026

article-autopilot

2
@TrendTweekers

Drop-in Claude Code skill bundle for AI-resistant SEO article generation — research → write → E-E-A-T audit, configurable for any site or language.

updated May 2026

aufgaard

2
@temurkhan13

Production AI Operations Suite — 7 MCPs + 13 skills + 6 hooks + 5 monitors. Catches dangerous bash, cost spikes, agent-config attacks, output-action divergence, silent cron failures, supply-chain risks, and unsafe upgrades. Operator cockpit for production AI.

updated May 2026

claude-code-starter-kit

2
@notque

Starter kit for building Claude Code agents, skills, hooks, and scripts

updated May 2026

plunk-mcp

2
@ignytehq

Unofficial Model Context Protocol server for Plunk. 84 tools spanning email, contacts, campaigns, segments, workflows, and analytics.

updated May 2026

bpmn-xml-generator

2
@stateway-io

AI agent code skill to generate valid BPMN XML files.

updated May 2026

claude-zh

2
@HYRXYT

Claude Code 中文汉化工具 - 工具提示钩子 + 界面汉化 | Based on cute-claude-hooks

updated May 2026
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