Best Ar AI Skills & MCP Servers

AI codebase indexer and MCP server for Claude Code, Cursor, and Copilot. Pre-index your project into a compact graph and measure real token savings with `larkx bench`.

Express middleware library for MCP (Model Context Protocol) OAuth authentication

MCP proxy for Pharaoh — maps codebases into queryable knowledge graphs for AI agents. Enables Claude Code in headless environments (VPS, SSH, CI) via device flow auth.

Encrypted LAN bridge between two Claude Code projects: ask read-only questions across project boundaries (and across machines) without pulling the other project's source into the caller's context.

MCP server for Agon Gateway discovery, calls, Tokens market data, and generic signer-hook auth.

Planu — MCP Server for Spec Driven Development with native Rust acceleration for hot paths. Cross-platform (Linux/macOS/Windows, x64/arm64, glibc/musl).

Varity MCP Server: deploy any app or AI agent from Cursor, Claude Code, VS Code, Windsurf, or ChatGPT — cheaper than Vercel, Railway, and Render

Agent-native TypeScript framework for building MCP servers. Declarative definitions with auth, multi-backend storage, OpenTelemetry, and first-class support for Bun/Node/Cloudflare Workers.

Search arXiv, fetch paper metadata, and read full-text content via MCP. STDIO or Streamable HTTP.

MCP server for Contextium — pipe team SOPs, coding standards, and AI context directly into Claude, Cursor, and other AI coding assistants

MCP server for the Lexware Office API — manage invoices, contacts, articles, vouchers, and more

MCP server providing seamless access to Apple Developer Documentation with smart search and wildcard support

MCP server for Hacker News — feeds, threads, users, and search via Firebase and Algolia APIs

Node.js/TypeScript MCP server for Atlassian Jira. Equips AI systems (LLMs) with tools to list/get projects, search/get issues (using JQL/ID), and view dev info (commits, PRs). Connects AI capabilities directly into Jira project management and issue tracki

MCP server and CLI tool for interacting with the Wayback Machine without API keys

EDGAR MCP — SEC EDGAR public APIs (free, no auth)

Create a runnable Bilig WorkPaper starter for Node services and agent tools.

Continuous learning for Kiro agent sessions on AWS. Passive tool-use capture, LLM extraction, and synchronous context injection — inspired by claude-mem, aligned with Bedrock AgentCore Memory.

CLI + MCP server for Fluxra — scrape comments, generate viral hooks, run AI research from the terminal or any MCP host (Claude Desktop / Code, Cursor, OpenClaw).

MCP server for Microsoft Outlook email and calendar

Save up to 80% tokens when AI reads code — MCP server for token-efficient code navigation, AST-aware structural reading instead of dumping full files into context window

Datadog MCP server for monitoring, metrics, logs, and dashboards

MCP server that exposes Google Workspace CLI (gws) as Model Context Protocol tools

Declarative MCP Server Engine — define tools, resources, and prompts in vurb.yaml. The docker-compose for MCP servers.