"Understanding OAuth 2.0 Protocol" matching MCP servers:

A Node.js MCP server that enables Claude Desktop to securely run read-only SQL queries against MariaDB/MySQL and Microsoft SQL Server databases using OAuth 2.0 PKCE authentication. It provides short-lived, per-user credentials that never touch disk, allowing secure database access through natural language interactions.

MCP server for enterprise authentication and authorization — JWT validation, OIDC token inspection, OAuth 2.0 introspection, and role-based access control for AI agents.

A production-grade Model Context Protocol (MCP) resource server with OAuth 2.1 authorization, provider-agnostic and supporting multiple MCP specification versions.

Acts as a secure OAuth 2.0/2.1 proxy gateway for MCP servers, enabling integration with Claude and ChatGPT platforms.

Enables MCP clients to authenticate through Convex OAuth Provider, verifying access tokens and exposing a whoami tool for retrieving the authenticated user's identity and scopes.

Enables deploying a remote MCP server with OAuth 2.1 resource-server authorization, protecting tools behind validated bearer tokens and RFC 9728 discovery.

Enables Claude to authenticate with GitHub OAuth and access tools for user information, calculations, and GitHub repositories.

MCP server with built-in Google OAuth 2.0 authentication, enabling secure tool access via Google sign-in with automatic token lifecycle management and optional domain restriction for Google Workspace organizations.

FastMCP server with Bearer token authentication mounted on FastAPI, including OAuth 2.1 endpoints for dynamic client registration and metadata discovery.

A remote MCP server for Cloudflare Workers featuring built-in GitHub OAuth for secure user authentication and identity-based access control to tools. It provides a reference implementation for managing remote MCP connections with persistent state and OAuth provider integration.

Enables secure remote MCP server connections using Cloudflare Access OAuth, with user-authenticated tools on Cloudflare Workers.

Multi-tenant MCP server with OAuth 2.1 authorization, enabling tenant-scoped tool access and audit logging.

A throwaway MCP server spike to prove Claude can complete OAuth 2.1 + PKCE and call a trivial ping tool.

Demonstrates MCP remote authentication boundary with OAuth 2.0, Keycloak token introspection, audience and scope validation, and protected tools.

A proof-of-concept HTTP MCP server requiring OAuth 2.0 authentication before tool use. Demonstrates the full authentication flow with Claude Code, including discovery, client registration, PKCE authorization, and bearer token verification.

Enables review and management of OAuth scopes for remote MCP servers, including risk inspection, approval routing, consent receipts, policy validation, and audit exports.

A production-ready MCP OAuth 2.1 server implementation with analytics and security monitoring, enabling secure authentication for MCP clients like Claude Desktop and Cursor.

A Model Context Protocol server template for Cloudflare Workers with GitHub OAuth authentication, enabling developers to build secure remote MCP servers with user authentication and access-controlled tools.

Enables remote MCP servers with Google OAuth authentication, allowing users to connect and sign in via their Google account.

An MCP server that enables interaction with Xero's Identity Service API, providing OAuth 2 authentication and identity management capabilities through natural language commands.