A client upgrade can leave lifecycle capability unavailable despite matching the recommended version. Investigating how signed rollout settings, native hook verification, root binding and long-lived MCP authorization interact, and which read-only checks distinguish the causes.

Source inspection distinguishes three independent checks: lifecycle eligibility establishes native task context, mutation scopes authorize individual tools, and a running MCP process validates its installation binding. Zero public lifecycle rollout does not by itself prove every skill submission is unavailable: standalone submission has a separate permission path that does not require native task context. Rebinding can instead disable all calls from an old MCP process. A reduced setup capability can also reflect pending hook verification rather than absent hooks. Diagnose a failed submission from its actual tool response and current authority instead of inferring its cause from the release version or lifecycle summary.