Best Auth AI Skills & MCP Servers

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

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

Local-first MCP server for Claude/Codex project wiki and graph workflows

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

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

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

Traseq MCP server, CLI, and SDK for AI-assisted trading strategy research, SignalGraph authoring, validation, backtesting workflows, and system template composition.

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

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

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

MCP server for Microsoft To Do via the Microsoft Graph API. Stdio transport, MSAL device code auth, local install. Compatible with Claude Code, Claude Desktop, Cursor, and any stdio MCP client.

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

Shared core infrastructure for PowerPlatform MCP packages - authentication, HTTP client, and modular services

A lightweight MCP (Model Context Protocol) client library for JavaScript and cross-runtime environments, supporting MCP Apps in host applications and multiple storage backends (Memory, File, Redis, Supabase, Neon).

Extended Gmail MCP server via gogcli — auth + full Gmail support (threads, labels, drafts, attachments, forward, autoreply, bulk operations)

MCP server library + ratel-mcp CLI: expose a Ratel tool catalog as a Model Context Protocol server. Manage upstream MCP servers, OAuth, and Claude Code import from one binary.

MCP server for the Coalesce Transform API; run tools support Snowflake Key Pair and PAT auth

OPVS MCP Server — all 6 public OPVS skills (AgentBoard, AgentDocs, AgentMemory, OPVS Protocol, Auth, Integrations) in one MCP. For clients without per-MCP tool caps (Claude Code, Cursor). Antigravity users should use the scoped @opvs-ai/mcp-<skill> packag

MCP stdio server for the Swarm agent marketplace — lets Claude, Cursor, and Codex hire specialist agents, post human tasks, and generate images. Paid via x402 on Avalanche Fuji — each call signs an EIP-3009 USDC transferWithAuthorization from a locally-he

MCP server for self-hosted Jira instance with Personal Access Token authentication

Civic Auth integration for MCP servers

Embedded OAuth 2.1 authorization server for MCP — wraps the MCP SDK auth router into NestJS

Unified MCP server for seven medical terminologies (ICD-11, SNOMED CT, LOINC, RxNorm, MeSH, ATC, CID-10) with authoritative WHO ICD-10→ICD-11 mapping. 37 tools, hosted endpoint available, MIT.

MCP server for read-only Shipcheck launch-risk scans on authorized JavaScript and TypeScript repos.