v2026_07_28 constant

String const v2026_07_28

Protocol version 2026-07-28 — BREAKING: stateless core (removes the initialize/initialized handshake and Mcp-Session-Id; client info/caps ride _meta on every request; server/discover fetches caps on demand), Extensions framework, Tasks extension, auth hardening, deprecations. Adopted as an additive, version-gated parallel path — the handshake path stays for ≤2025-11-25 peers. Deliberately NOT in supportedVersions until the stateless request path lands, so handshake negotiation does not advertise it yet. See docs/STATELESS-COEXISTENCE-DESIGN.md.

Implementation

static const String v2026_07_28 = "2026-07-28";