Best Auth AI Skills & MCP Servers

Model Context Protocol server for the Lumeo Blazor component library. Lets LLMs (Claude, Copilot, Cursor) author correct Lumeo markup.

Shared authentication library for F5 Distributed Cloud MCP servers - XDG-compliant profile management

Unified MCP Streamable HTTP 2025-11-25 transport, OAuth 2.1 AS, lifecycle, install

Lightweight OAuth 2.0 callback handler for Node.js, Deno, and Bun with built-in browser flow and MCP SDK integration

A Model Context Protocol server for Google Calendar integration with auto authentication

Runtime, compiler, lint, CLI, and dashboard for Skillscript — a small declarative language for authoring agent workflows.

Comprehensive Model Context Protocol server for WordPress management with composition-based architecture, 59 tools, SEO toolkit, performance monitoring, intelligent caching, and production-ready authentication

stdio-to-HTTP MCP proxy for Grackle — bridges stdio-only MCP clients (Claude Desktop, Codex CLI, Clawpilot) to a Grackle HTTP MCP server using static API-key auth

Official elvix SDK. Drop-in React components, server helpers, and an MCP server so AI coding agents integrate elvix on the first try.

Gmail MCP server with auto authentication support

Model Context Protocol server and tools for agent-qa authoring and triage.

MCP client for discovering and exercising resources, tools, prompts, and completions over stdio or OAuth-protected HTTP. Ships with a CLI, an interactive REPL, and a web dashboard served by `mcp-inspector serve`.

Generic MCP shell for agent-driven remote Chrome control through cdp-bridge and canonical cdper packages

All-in-one Feishu MCP server + CLI tool for Claude Code / Codex / Cursor / scripts — 85 tools across 3 auth layers (cookie / app / OAuth). Send as you, read groups, manage docs / bitable / wiki / drive / calendar / tasks / OKR.

Arguslog MCP server — exposes the full Arguslog API (issues, projects, orgs, alerts, releases, tier admin, …) as Model Context Protocol tools. Authenticate with a Personal Access Token from the dashboard.

NetSuite MCP server with OAuth 2.0 PKCE authentication. Works seamlessly with Claude Code, Cursor IDE, and other MCP clients.

Model Context Protocol server for Open Policy Agent (OPA). Author, validate, debug, and explain Rego policies through any MCP-compatible client.

MCP server for Google Sheets integration - Your AI Assistant's Gateway to Google Sheets!

TypeScript SDK and CLI for the MCP Gateway — auth, agents, tool calling, and x402 payments

Security-hardened MCP server for Excalidraw with API key auth, rate limiting, and real-time canvas sync

MCP server for Titanos agents — Super Listing, Amazon lookup, product mining, Seller Central listings (OAuth SP-API).

MCP server for D2L Brightspace (multi-auth, opt-in writes, session cache)

Slack MCP without OAuth. 21 tools (16 read/write Slack + 2 workflow profile primitives + 3 hosted-brain upgrade stubs). Free OSS or hosted (free tier no card; $9/mo Pro = unlimited; morning DM rolling out Q2 2026).

Test, debug, and validate MCP servers — health checks, OAuth conformance, tool-surface diffing, and structured triage from the terminal or CI