"Open-Source MCP Server in Python with PostgreSQL and OAuth 2.0" matching MCP servers:

A deployable MCP server template for Cloudflare Workers that provides Google OAuth authentication and comprehensive analytics tracking of tool usage, performance metrics, and user behavior.

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

Implements a secure MCP server with API Key and JWT authentication, providing tools like echo, login, secure_action, and admin_action. Includes MCP Inspector integration for testing and debugging.

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

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.

A configurable OAuth 2.0 authorization server and OAuth-protected MCP server for end-to-end testing of OAuth-protected MCP flows, including failure injection and control plane.

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

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.

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.

A transparent proxy server that simplifies authentication by chaining its own OAuth layer with an upstream MCP server's credentials. It manages dual token sets behind a single interface, enabling secure and streamlined access to protected MCP resources.

Enables MCP clients that can only send a fixed Authorization header to reach OAuth 2.1-protected MCP servers, by running a loopback proxy that handles RFC 9728 discovery, PKCE login, and silent token refresh so no pasted JWT is ever needed. The client keeps a stable local token while the rotating OAuth credentials stay in the gateway's state file.

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

A wrapper for mcp-remote that provides secure authentication for protected MCP servers using Adobe IMS or Okta OAuth flows. It features automated token management, validation, and background refreshing for seamless access to remote resources.

Enables connecting multiple remote HTTP MCP servers through a single local stdio endpoint, handling OAuth authentication, token refresh, and namespace-scoped tools.

Enables clients to connect their ChatGPT or Claude to a brand's n8n MCP toolkit through OAuth sign-in with passwordless magic links, proxying MCP traffic while injecting the n8n bearer token server-side.

An MCP server with GitHub OAuth for remote connections, providing tools for arithmetic, GitHub user info, and image generation.

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 remote MCP server with built-in Access OAuth, enabling authenticated MCP connections via Cloudflare Access and conditional tool permissions.