MCP Server Authentication: What the 2026-07-28 Spec Broke

MCP server authentication changes in the 2026-07-28 spec update

MCP server authentication stopped being optional a month ago. The Model Context Protocol’s largest spec revision since launch finalized on schedule on July 28, 2026 and is now the current protocol version. It turns every remote MCP server into a… Read moreMCP Server Authentication: What the 2026-07-28 Spec Broke