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

8261entries
★ starsA–Z name

the-extension

★ 0
@aidanjnn

claude code for building extensions

updated Oct 2026

vari-mcp

★ 0
@getvari

Vari Hydration Tools — public MCP server for Claude Desktop, Cursor, and other MCP clients. Six deterministic hydration calculators (water intake, dehydration, pregnancy, kidney, athlete, energy-optimizer).

updated Apr 2026

RBI-Source-MCP

★ 0
@harshilmathur

Hosted MCP server for Reserve Bank of India regulatory citations. Paste a clause into Claude / ChatGPT / Cursor, get cited RBI provisions back. Retrieval-only, citation-first.

updated Jun 2026

vscode-claude-code-unspinner

★ 0
@valentin-baron

Allow changing spinnerVerbs in claude code VS code extension the same way that claude code does.

updated Apr 2026

claude-gemini-mcp

★ 0
@Impossible-Studio-TW

Use Google Gemini in Claude via Google OAuth (no API key needed). Wraps the official gemini CLI.

updated Sep 2026

claude-gpt-image2-mcp

★ 0
@Impossible-Studio-TW

OpenAI gpt-image-2 / gpt-image-1 in Claude. Multi-image reference + Chinese text rendering. Auto-resizes oversize inputs.

updated Apr 2026

appleref-mcp

★ 0
@nzrsky

Offline MCP server for Apple Developer Documentation, reading directly from a Dash-format Apple_API_Reference.docset

updated Jul 2026

custtr_ai

★ 0
@lbindhu

CourseDev team Claude Code skills extension

updated Sep 2026

vscode-extension-claude-code-ai-tracker

★ 0
@hmredmond

Track your Claude Code AI costs in real-time directly in VSCode. Monitor daily and weekly spending, analyze model usage, and set cost alerts.

updated May 2026

claude-code-usage-vs-extension

★ 0
@chabirOael
updated May 2026

smokeball-mcp

★ 0
@RosenAdvertising

MCP server for Smokeball — API coverage for law firm practice management.

updated Oct 2026

practicepanther-mcp

★ 0
@RosenAdvertising

MCP server for PracticePanther — API coverage for law firm practice management.

updated Oct 2026

rocketmatter-mcp

★ 0
@RosenAdvertising

MCP server for Rocket Matter — API coverage for law firm practice management.

updated Oct 2026

lawruler-mcp

★ 0
@RosenAdvertising

MCP server for LawRuler — API coverage for law firm CRM and intake.

updated Oct 2026

cosmolex-mcp

★ 0
@RosenAdvertising

MCP server for CosmoLex — API coverage for law firm practice management.

updated Oct 2026

free-claude-code

★ 0
@CameronHodges98

Use claude-code for free in the terminal, VSCode extension or discord like OpenClaw (voice supported)

updated May 2026

twitter-mcp

★ 0
@YoppaV

Read-only Twitter/X MCP server for Claude Code & Desktop. Playwright + GraphQL interception. 17 tools: bookmarks, home, search, tweets, threads, profiles, followers/following, mentions, quotes, likers, retweeters, trends, X articles, media download.

updated Jun 2026

vscode-extension-claude-code-ai-tracker

★ 0
@0xC0DEM4M4N
updated May 2026

arenza-claude-tutorial

★ 0
@arenza-ai

Use Arenza AI visibility (GEO) data from Claude Desktop and Claude Code via MCP — 5-min setup tutorial covering ChatGPT/Claude/Gemini/Perplexity/Copilot/Grok brand tracking

updated May 2026

claude-history

★ 0
@twostar01

Search your Claude.ai conversation history from any Claude Code session.

updated May 2026

polymarket-mcp

★ 0
@YoppaV

Read-only Polymarket research MCP server (wallet investigation, market metadata, cross-wallet correlation, forensics). 21 tools, 4 tiers.

updated May 2026

vscode-extension-claude-code-manager

★ 0
@ungi-hong
updated May 2026

synthflow-mcp

★ 0
@RosenAdvertising

MCP server for Synthflow — API coverage for voice AI agents.

updated Oct 2026

ultravox-mcp

★ 0
@RosenAdvertising

MCP server for Ultravox — API coverage for voice AI agents.

updated Oct 2026
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