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

8240entries
★ starsA–Z name

fitbit-mcp

1
@davidmosiah

MCP server for Fitbit — query daily activity, heart rate, sleep, and body data from your Fitbit account in any MCP-compatible AI client (Claude, Cursor, etc.).

updated Jul 2026

dynadot-mcp

1
@Eyalm321

MCP server for Dynadot RESTful API v2 — tools for domain registration, DNS, contacts, nameservers, folders, aftermarket, and more

updated Jun 2026

actionstep-mcp

1
@RosenAdvertising

MCP server for Actionstep — full API coverage for law firm practice management.

updated Jul 2026

headroom

1
@nvbinh15

Menu-bar app + WidgetKit extension for Claude Code and Codex CLI rate-limit usage

updated Jun 2026

obsidian-mcp-router

1
@tboome33

MCP server that routes Claude tool calls to multiple Obsidian vaults (local or remote) over the Local REST API plugin.

updated Jul 2026

tesla-skill

1
@Vibetool

Connect your Tesla to any AI agent — Claude, Cursor, Codex. 10 MCP tools (status reads + signed control commands) using Tesla's official Fleet API and Virtual Key signing.

updated May 2026

mcp-openai-images-audio

1
@eduard256

MCP server exposing OpenAI image generation, image editing, and text-to-speech as tools for Claude Code and other MCP clients. Built with Python and FastMCP.

updated Jun 2026

mcp-armor

1
@studiomeyer-io

Drop-in Rust sidecar for MCP servers — scans tool calls for prompt injection, validates Ed25519 manifest signatures, blocks marketplace-poisoning vectors. <5ms p99 overhead. Defense against OX Security MCP advisory (10+ CVEs, April 2026).

updated Jul 2026

Claude-Code-Desktop-App-Redesigned-by-Anthropic

1
@patricapennate790

Run Claude as a native desktop application with optimized tools, project context awareness, and a clean interface for efficient software development.

updated Jul 2026

claude-saas-flow

1
@ImTaegan

8 production-tested Claude Code skills for Linear → GitHub → Vercel SaaS workflows. Quick-start backlog items, auto-link PRs to Linear issues, attach Vercel previews, cross-tool dashboards.

updated Jun 2026

resume-mcp-server

1
@mnoomnoo

MCP server that gives AI clients structured, searchable access to a local folder of resume files (PDF, DOCX, MD, TXT), exposing tools for querying resumes, work experiences, achievements, skills, side projects, and education.

updated Jul 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

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

apple-health-mcp

1
@davidmosiah

Unofficial local-first Apple Health MCP server — parses your local export and exposes activity, sleep, heart, HRV and workouts to AI agents.

updated Jul 2026

polar-mcp

1
@davidmosiah

Unofficial local-first Polar AccessLink Dynamic API v4 MCP server for AI agents

updated Jul 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 Jul 2026

caseLaw

1
@lapiogga

법제처 OpenAPI 기반 한국 판례·법령 MCP 서버. 변호사 + 일반인 + 외국인 3-트랙. 44 tool, 5언어(ko/en/zh/vi/ja), 250 단위 테스트.

updated Jul 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

glyph-grid-studio

1
@Joona-t

Real-time character-grid image renderer for macOS — GUI + CLI + MCP server. p5.js + Tauri 2 + Rust.

updated Jun 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

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 Jul 2026
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