MCP Hello Page | Hacker News

Hacker News users debated whether an MCP /mcp endpoint should return HTML, with some arguing for proper HTTP content negotiation and 406 responses instead.

The thread then widened into MCP’s still-evolving authentication model, including OAuth 2.0 vs. 2.1, DCR, token exchange, and Protected Resource Metadata.

Commenters also raised deployment questions about gateway behavior, client compatibility, and whether responsibility should sit with servers, gateways, or IdP vendors.

Overall, the discussion showed that MCP is still refining key spec details, especially around auth and enterprise integration.