OptionalcapabilitiesOptionalconfigOptionalloggerOptionalnameOptionalregistryOptionalscopeOptionalsessionTransport session id for multi-client transports (one MCPServer per HTTP session). Keys per-session state like the layer workspace (#1030); omit for stdio/in-process where the process is the session.
OptionalviewerOptional pre-built viewer manager. Default: a fresh one bound to the registry.
Override which capabilities are advertised.