MCP OAuth Cloudflare

Production-ready OAuth authentication for MCP servers on Cloudflare Workers.

When to Use This Skill

• Building an MCP server that needs user authentication
• Deploying MCP to Claude.ai (requires Dynamic Client Registration)
• Replacing static auth tokens with OAuth for better security
• Adding Google Sign-In to your MCP server
• Need user context (email, name, picture) in MCP tool handlers

When NOT to Use

• Internal/private MCP servers where tokens are acceptable
• MCP servers without user-specific data
• Local-only MCP development (use tokens for simplicity)

Architecture Overview