Authful MCP Proxy

Name: Authful MCP Proxy
Availability: InStock
Author: stephaneberle9

by stephaneberle9

Adds an OAuth/OIDC authentication layer to remote MCP servers that lack built-in auth flows.

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Works in:CursorWindsurfCodex

Exposes:ToolsResourcesPrompts

View on GitHub Docs

What it does

Acts as a secure bridge between MCP clients and remote MCP servers protected by token validation. It handles the full OIDC authentication flow (including browser-based login and PKCE), caches credentials locally, and automatically refreshes tokens.

Tools

This is a proxy server; it exposes the tools of the upstream MCP server it is configured to bridge to.

Installation

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "protected-server": {
      "command": "uvx",
      "args": [
        "authful-mcp-proxy",
        "https://mcp-backend.company.com/mcp"
      ],
      "env": {
        "OIDC_ISSUER_URL": "https://auth.company.com",
        "OIDC_CLIENT_ID": "your-client-id"
      }
    }
  }
}

Supported hosts

Claude Desktop
Cursor
Windsurf
Codex

Quick install

uvx authful-mcp-proxy <backend_url>

Information

Pricing: free
Published: 5/20/2026
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Related Apps

Choose your AI client and follow the steps below.

Cursor

Add to MCP settings using the same configuration as Claude Desktop.

Windsurf

Add to mcp_config.json using the same configuration as Claude Desktop.

Claude Desktop

Use uvx authful-mcp-proxy with OIDC_ISSUER_URL and OIDC_CLIENT_ID environment variables.