Best Auth AI Skills & MCP Servers

FDIC MCP — FDIC BankFind Suite API (free, no auth)

Model Context Protocol (MCP) server for Prizmad — generate AI UGC video ads from any product URL. Tools for recommend_template, upload_image, create_video, get_video_status (with live progress), create_video_batch, list_my_videos. OAuth 2.1 Connect flow f

MCP server for DNS lookups, reverse DNS, WHOIS, and domain checks — zero auth, zero config

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

MCP server for scholarly works, authors, and institutions via OpenAlex API

MCP server for Google Docs, Drive & Comments (OAuth + Service Account)

MCP server for VK Ads API — 8 tools: campaigns, ads, statistics, targeting, budgets. Bearer auth.

MCP server for CloudPayments API — charge, auth, confirm, void, refund, find transaction. 6 tools. Basic auth.

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.

Security MCP for vibe coding. 424 rules, 36 tools, CLI + doctor. Host security, auth coverage mapping, LLM-powered deep scan (IDOR/business logic), taint analysis. 61 CVE rules refreshed daily from GHSA/OSV/CISA KEV — Next.js May 2026 13-advisory cluster,

MCP server for Robokassa payment API — generate payment URLs, check invoice status. 2 tools. MD5 signature auth.

DEPRECATED — install the Claude Code plugin at gramatr/claude-plugin instead. This npm package no longer ships a CLI; Codex and Gemini integrations are paused pending HTTPS+OAuth MCP support.

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

A local MCP server that breaks on demand. Test your client against auth failures, disappearing tools, flaky responses, and token expiry.

The mcp-use CLI is a tool for building and deploying MCP servers with support for ChatGPT Apps, Code Mode, OAuth, Notifications, Sampling, Observability and more.

Gmail MCP server with auto authentication support

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

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

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

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

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

Gmail MCP server with auto authentication support

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