Dynamic Client Registration for MCP Clients

Security Recommendation

Authorization servers and MCP clients MAY support the OAuth 2.0 Dynamic Client Registration Protocol (RFC 7591). This allows MCP clients to register with authorization servers automatically without manual pre-registration.

When to Use

Dynamic Client Registration is useful when:

• MCP clients connect to many different MCP servers with different authorization servers
• Manual client registration is impractical at scale
• The authorization server supports it (check the discovery metadata for registration_endpoint)

Registration Flow