Draft 2026-W41

agentproto is an IETF working group, approved in October 2026, on how AI agents keep track of one dialog as it passes between systems. It does not replace existing agent protocols or define a new transport. It has a charter, not yet a protocol.

The Model Context Protocol project marked SEP-2127 as Final. It defines a Server Card, a small public description of a remote MCP server that a client can read before connecting. It is an extension; the core specification did not change.

On 6 October 2026 Sierra announced the Personal Agent Protocol, an open standard it is developing with Meta for how a person's own AI agent interacts with businesses. It is built on OAuth, the standard for delegated sign-in. The post gives no adoption figures.