Best Auth AI Skills & MCP Servers

Gmail MCP server with auto authentication support

A Model Context Protocol (MCP) server for Feishu (Lark) cloud document and wiki management. Supports OAuth, Markdown upload, document reading/updating/deleting, search, and multi-app configuration.

CLI and MCP servers for Cutline — authenticate, then run constraint-aware MCP servers in Cursor or any MCP client.

Zero-auth MCP server with everyday developer utilities: base64, UUID, hash, JWT decode, cron, timestamps, JSON, regex

MCP server for Run402 — AI-native Postgres databases with REST API, auth, storage, and row-level security. Pay with x402 USDC micropayments.

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

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

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

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

MCP server for Central Bank of Russia API — currency rates, key rate, precious metals, conversion. 5 tools. No auth required.

MCP server for Salla e-commerce (Saudi Arabia) — 9 tools for products, orders, customers, store. OAuth 2.0.

MCP server for Evernote integration with note management and synchronization

A Model Context Protocol server for Google Calendar integration with auto 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

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

A terminal coding agent powered by Kimi K2.6, routed through your own Cloudflare AI Gateway — per-request logs, response caching, authoritative cost. Web search, GitHub, headless browser, LSP, MCP, local memory, 262k context.

Gmail MCP server with auto authentication support

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

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`.

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.

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

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

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.

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