MCP charters the Transports Working Group; its roadmap plans against a 2026-12-15 specification release

The Model Context Protocol project merged a formal charter for its Transports Working Group into the official documentation on 2026-08-26. The charter itself is dated 2026-08-23 and names Kurtis Van Gent as the working group lead. The group is not new: its repository has existed since January 2026 and already holds proposals, meeting notes, and decision records. What changed is formal standing. The charter page defines decision rights (spec changes need WG consensus plus Core Maintainer approval), membership rules, and a scope boundary that other groups can hold it to.

The scope is wide. Beyond transport bindings themselves - framing, delivery, connection lifecycle, backward compatibility - the charter assigns the group "transport-adjacent protocol architecture": request association, per-request metadata, stateless operation, and migration from the legacy initialization and transport-session models that the 2026-07-28 revision removed. Binding-level wire security (Origin validation, TLS, mTLS) also lands here, coordinated with the Security and Auth interest groups.

The group also published a roadmap to its repository the day before the charter merged. It plans three priority tracks "targeted for the 2026-12-15 release": tool and primitive versioning via ETag-like identifiers, HTTP over STDIO as a single transport model for local and remote servers, and pluggable transports. The date carries a caveat: the specification repository names no next-release date, and the project roadmap published 2026-08-22 committed to priority areas without one, so the working group's planning document is currently the only public surface carrying a target date for the next revision. The same document marks sessions and conversation IDs "not planned" for that release, writing down a bar any session-shaped proposal must clear after the 2026-07-28 revision removed protocol-level sessions.

The 2026-08-22 roadmap said two working groups were forming, for agent identity and core primitives. Neither has a published charter yet; the transports charter is the first group formalized since that roadmap shipped.